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[Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...

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  • mfeberhard
    Tee hee... 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used octal. But the 3P+S manual assumes hex. -Martin
    Message 1 of 15 , Oct 9, 2012
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      Tee hee...

      10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used octal. But the 3P+S manual assumes hex.


      -Martin

      --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote:
      >
      >
      >
      >
      > You'd have to make a slight adjustment though, MITS BASIC uses ports 20/21, right? Or change BASIC to use 10/11.
      >
      > > from page III-1, you can set the address of the 3P+S to 00 in Area A:
      >
      > A4 jumpered to V+
      > A2,A3,A5-A7 all jumpered to GND
      >
      > I'd have to take a look at the manual, I am sure it's just a different variation to go from 10/11 to 20/21. Or is this the same thing - that whole "shadow ports" thing.
      >
      >
      > > The standard address for a MITS 2SIO port 0 is Control/Status at
      > > address 10h and Data Out/In at Address 11h.
      >
    • B Degnan
      My Spidey senses were telling me I might be wrong, thanks for affirmation on your solution, I would have been spinning my wheels on that one before I figured
      Message 2 of 15 , Oct 10, 2012
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        My Spidey senses were telling me I might be wrong, thanks for affirmation on your solution, I would have been spinning my wheels on that one before I figured it out.
        Bill



        -----Original Message-----
        From: mfeberhard <eberhard@...>
        To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
        Sent: Tue, Oct 9, 2012 9:55 pm
        Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...

        Tee hee...
        
        10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used 
        octal. But the 3P+S manual assumes hex.
        
        
        -Martin
        
        
        --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote: > > > > > You'd have to make a slight adjustment though, MITS BASIC uses ports 20/21, right? Or change BASIC to use 10/11. > > > from page III-1, you can set the address of the 3P+S to 00 in Area A: > > A4 jumpered to V+ > A2,A3,A5-A7 all jumpered to GND > > I'd have to take a look at the manual, I am sure it's just a different variation to go from 10/11 to 20/21. Or is this the same thing - that whole "shadow ports" thing. > > > > The standard address for a MITS 2SIO port 0 is Control/Status at > > address 10h and Data Out/In at Address 11h. > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/altaircomputerclub/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/altaircomputerclub/join (Yahoo! ID required) <*> To change settings via email: altaircomputerclub-digest@yahoogroups.com altaircomputerclub-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: altaircomputerclub-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
      • corey986
        Either way... I appreciate all the information from both you guys. I hope to re-jumper the entire board just to be sure. The person who built this one didn t
        Message 3 of 15 , Oct 10, 2012
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          Either way... I appreciate all the information from both you guys. I hope to re-jumper the entire board just to be sure. The person who built this one didn't use any of the "DIP" connectors, so out will come the desoldering station (this thing has really paid for itself with this Altair).

          Cheers,
          Corey

          --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote:
          >
          > My Spidey senses were telling me I might be wrong, thanks for affirmation on your solution, I would have been spinning my wheels on that one before I figured it out.
          > Bill
          >
          >
          >
          >
          >
          >
          >
          > -----Original Message-----
          > From: mfeberhard <eberhard@...>
          > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
          > Sent: Tue, Oct 9, 2012 9:55 pm
          > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
          >
          >
          > Tee hee...
          >
          > 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used
          > octal. But the 3P+S manual assumes hex.
          >
          >
          > -Martin
          >
          > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
          > >
          > >
          > >
          > >
          > > You'd have to make a slight adjustment though, MITS BASIC uses ports 20/21,
          > right? Or change BASIC to use 10/11.
          > >
          > > > from page III-1, you can set the address of the 3P+S to 00 in Area A:
          > >
          > > A4 jumpered to V+
          > > A2,A3,A5-A7 all jumpered to GND
          > >
          > > I'd have to take a look at the manual, I am sure it's just a different
          > variation to go from 10/11 to 20/21. Or is this the same thing - that whole
          > "shadow ports" thing.
          > >
          > >
          > > > The standard address for a MITS 2SIO port 0 is Control/Status at
          > > > address 10h and Data Out/In at Address 11h.
          > >
          >
          >
          >
          >
          > ------------------------------------
          >
          > Yahoo! Groups Links
          >
        • B Degnan
          Just to be clear, I was mistaken. I mis-read 10/11H and was thinking he meant 10/11 octal. There is no reason to believe Martin s PTEC 3P+S config would
          Message 4 of 15 , Oct 10, 2012
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            Just to be clear, I was mistaken.  I mis-read "10/11H" and was thinking he meant 10/11 octal.   There is no reason to believe Martin's PTEC 3P+S config would not work.  Let us know if you try it.
            Bill




            -----Original Message-----
            From: corey986 <no_reply@yahoogroups.com>
            To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
            Sent: Wed, Oct 10, 2012 11:22 am
            Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...

            Either way... I appreciate all the information from both you guys.  I hope to 
            re-jumper the entire board just to be sure.  The person who built this one 
            didn't use any of the "DIP" connectors, so out will come the desoldering station 
            (this thing has really paid for itself with this Altair).
            
            Cheers,
            Corey
            
            
            --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote: > > My Spidey senses were telling me I might be wrong, thanks for affirmation on your solution, I would have been spinning my wheels on that one before I figured it out. > Bill > > > > > > > > -----Original Message----- > From: mfeberhard <eberhard@...> > To: altaircomputerclub <altaircomputerclub@yahoogroups.com> > Sent: Tue, Oct 9, 2012 9:55 pm > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic... > > > Tee hee... > > 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used > octal. But the 3P+S manual assumes hex. > > > -Martin > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote: > > > > > > > > > > You'd have to make a slight adjustment though, MITS BASIC uses ports 20/21, > right? Or change BASIC to use 10/11. > > > > > from page III-1, you can set the address of the 3P+S to 00 in Area A: > > > > A4 jumpered to V+ > > A2,A3,A5-A7 all jumpered to GND > > > > I'd have to take a look at the manual, I am sure it's just a different > variation to go from 10/11 to 20/21. Or is this the same thing - that whole > "shadow ports" thing. > > > > > > > The standard address for a MITS 2SIO port 0 is Control/Status at > > > address 10h and Data Out/In at Address 11h. > > > > > > > ------------------------------------ > > Yahoo! Groups Links > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/altaircomputerclub/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/altaircomputerclub/join (Yahoo! ID required) <*> To change settings via email: altaircomputerclub-digest@yahoogroups.com altaircomputerclub-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: altaircomputerclub-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
          • corey986
            Yep, got it... Hopefully I can document the jumper ing in pictures. I m sure I m not the only one who wants to do this (Unless someone wants to sell me a MITS
            Message 5 of 15 , Oct 10, 2012
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              Yep, got it...

              Hopefully I can document the jumper'ing in pictures. I'm sure I'm not the only one who wants to do this (Unless someone wants to sell me a MITS 88-2SIO with rs232 support)

              Cheers
              Corey...

              --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote:
              >
              > Just to be clear, I was mistaken. I mis-read "10/11H" and was thinking he meant 10/11 octal. There is no reason to believe Martin's PTEC 3P+S config would not work. Let us know if you try it.
              > Bill
              >
              >
              >
              >
              >
              >
              >
              > -----Original Message-----
              > From: corey986 <no_reply@yahoogroups.com>
              > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
              > Sent: Wed, Oct 10, 2012 11:22 am
              > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
              >
              >
              > Either way... I appreciate all the information from both you guys. I hope to
              > re-jumper the entire board just to be sure. The person who built this one
              > didn't use any of the "DIP" connectors, so out will come the desoldering station
              > (this thing has really paid for itself with this Altair).
              >
              > Cheers,
              > Corey
              >
              > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
              > >
              > > My Spidey senses were telling me I might be wrong, thanks for affirmation on
              > your solution, I would have been spinning my wheels on that one before I figured
              > it out.
              > > Bill
              > >
              > >
              > >
              > >
              > >
              > >
              > >
              > > -----Original Message-----
              > > From: mfeberhard <eberhard@>
              > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
              > > Sent: Tue, Oct 9, 2012 9:55 pm
              > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
              > >
              > >
              > > Tee hee...
              > >
              > > 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used
              >
              > > octal. But the 3P+S manual assumes hex.
              > >
              > >
              > > -Martin
              > >
              > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
              > > >
              > > >
              > > >
              > > >
              > > > You'd have to make a slight adjustment though, MITS BASIC uses ports 20/21,
              >
              > > right? Or change BASIC to use 10/11.
              > > >
              > > > > from page III-1, you can set the address of the 3P+S to 00 in Area A:
              > > >
              > > > A4 jumpered to V+
              > > > A2,A3,A5-A7 all jumpered to GND
              > > >
              > > > I'd have to take a look at the manual, I am sure it's just a different
              > > variation to go from 10/11 to 20/21. Or is this the same thing - that whole
              > > "shadow ports" thing.
              > > >
              > > >
              > > > > The standard address for a MITS 2SIO port 0 is Control/Status at
              > > > > address 10h and Data Out/In at Address 11h.
              > > >
              > >
              > >
              > >
              > >
              > > ------------------------------------
              > >
              > > Yahoo! Groups Links
              > >
              >
              >
              >
              >
              > ------------------------------------
              >
              > Yahoo! Groups Links
              >
            • B Degnan
              There are a lot more 3P+S s around, that s for sure. ... From: corey986 To: altaircomputerclub
              Message 6 of 15 , Oct 10, 2012
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                There are a lot more 3P+S's around, that's for sure.



                -----Original Message-----
                From: corey986 <no_reply@yahoogroups.com>
                To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                Sent: Wed, Oct 10, 2012 11:58 am
                Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...

                Yep, got it...
                
                Hopefully I can document the jumper'ing in pictures.  I'm sure I'm not the only 
                one who wants to do this (Unless someone wants to sell me a MITS 88-2SIO with 
                rs232 support)
                
                Cheers
                Corey...
                
                
                --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote: > > Just to be clear, I was mistaken. I mis-read "10/11H" and was thinking he meant 10/11 octal. There is no reason to believe Martin's PTEC 3P+S config would not work. Let us know if you try it. > Bill > > > > > > > > -----Original Message----- > From: corey986 <no_reply@yahoogroups.com> > To: altaircomputerclub <altaircomputerclub@yahoogroups.com> > Sent: Wed, Oct 10, 2012 11:22 am > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic... > > > Either way... I appreciate all the information from both you guys. I hope to > re-jumper the entire board just to be sure. The person who built this one > didn't use any of the "DIP" connectors, so out will come the desoldering station > (this thing has really paid for itself with this Altair). > > Cheers, > Corey > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote: > > > > My Spidey senses were telling me I might be wrong, thanks for affirmation on > your solution, I would have been spinning my wheels on that one before I figured > it out. > > Bill > > > > > > > > > > > > > > > > -----Original Message----- > > From: mfeberhard <eberhard@> > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com> > > Sent: Tue, Oct 9, 2012 9:55 pm > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic... > > > > > > Tee hee... > > > > 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always used > > > octal. But the 3P+S manual assumes hex. > > > > > > -Martin > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote: > > > > > > > > > > > > > > > You'd have to make a slight adjustment though, MITS BASIC uses ports 20/21, > > > right? Or change BASIC to use 10/11. > > > > > > > from page III-1, you can set the address of the 3P+S to 00 in Area A: > > > > > > A4 jumpered to V+ > > > A2,A3,A5-A7 all jumpered to GND > > > > > > I'd have to take a look at the manual, I am sure it's just a different > > variation to go from 10/11 to 20/21. Or is this the same thing - that whole > > "shadow ports" thing. > > > > > > > > > > The standard address for a MITS 2SIO port 0 is Control/Status at > > > > address 10h and Data Out/In at Address 11h. > > > > > > > > > > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > > > > > ------------------------------------ > > Yahoo! Groups Links > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/altaircomputerclub/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/altaircomputerclub/join (Yahoo! ID required) <*> To change settings via email: altaircomputerclub-digest@yahoogroups.com altaircomputerclub-fullfeatured@yahoogroups.com <*> To unsubscribe from this group, send an email to: altaircomputerclub-unsubscribe@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
              • Systems Glitch
                We must have different manuals. Mine was very clearly written and informative...though I believe it was original to the card I ve got. The card was /extremely/
                Message 7 of 15 , Oct 10, 2012
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                  We must have different manuals. Mine was very clearly written and informative...though I believe it was original to the card I've got. The card was /extremely/ beat up, really bad kludges everywhere, but cleaned up nicely.

                  While the 3P+S uses a "different" UART than the MITS rev 0 serial board, they're pretty much the same. There were a lot of "different" 40-pin UARTs out there by various manufacturers; however, almost all of them conform to the Western Digital TR1602A spec/pinout. Some of the newer CMOS ones (as used in the TRS-80 Model 100, for example) are lower power and support a higher max baud rate. More or less, if the same dual power supply voltages are used, it's 40 pin, and you're not driving it at too high a baud rate, it'll work in the 3P+S/MITS rev 0/SSM IO-2/SSM IO-4/et c.

                  But yes, the 3P+S is versatile enough to emulate most non-VLSI UARTS. You can easily emulate the 6850 or 8251. I don't think it would be possible to fully emulate something as complex as the Zilog 8530 SCC, but you're not likely to be trying to emulate that device on vintage hardware.

                  I've though about putting together a 40-pin UART based S-100 board for new production, but there hasn't been any interest in doing so. They're quite versatile, and require zero software setup to get up and going. It's even possible to push data from something else into a 40-pin UART without a microprocessor/microcontroller.

                  Thanks,
                  Jonathan

                  On Wed, 10 Oct 2012 12:06:40 -0400 (EDT)
                  B Degnan <billdeg@...> wrote:

                  > There are a lot more 3P+S's around, that's for sure.
                  >
                  >
                  >
                  >
                  >
                  >
                  > -----Original Message-----
                  > From: corey986 <no_reply@yahoogroups.com>
                  > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                  > Sent: Wed, Oct 10, 2012 11:58 am
                  > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
                  >
                  >
                  > Yep, got it...
                  >
                  > Hopefully I can document the jumper'ing in pictures. I'm sure I'm not the only
                  > one who wants to do this (Unless someone wants to sell me a MITS 88-2SIO with
                  > rs232 support)
                  >
                  > Cheers
                  > Corey...
                  >
                  > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@...> wrote:
                  > >
                  > > Just to be clear, I was mistaken. I mis-read "10/11H" and was thinking he
                  > meant 10/11 octal. There is no reason to believe Martin's PTEC 3P+S config
                  > would not work. Let us know if you try it.
                  > > Bill
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > >
                  > > -----Original Message-----
                  > > From: corey986 <no_reply@yahoogroups.com>
                  > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                  > > Sent: Wed, Oct 10, 2012 11:22 am
                  > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
                  > >
                  > >
                  > > Either way... I appreciate all the information from both you guys. I hope to
                  > > re-jumper the entire board just to be sure. The person who built this one
                  > > didn't use any of the "DIP" connectors, so out will come the desoldering
                  > station
                  > > (this thing has really paid for itself with this Altair).
                  > >
                  > > Cheers,
                  > > Corey
                  > >
                  > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
                  > > >
                  > > > My Spidey senses were telling me I might be wrong, thanks for affirmation on
                  >
                  > > your solution, I would have been spinning my wheels on that one before I
                  > figured
                  > > it out.
                  > > > Bill
                  > > >
                  > > >
                  > > >
                  > > >
                  > > >
                  > > >
                  > > >
                  > > > -----Original Message-----
                  > > > From: mfeberhard <eberhard@>
                  > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                  > > > Sent: Tue, Oct 9, 2012 9:55 pm
                  > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
                  > > >
                  > > >
                  > > > Tee hee...
                  > > >
                  > > > 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always
                  > used
                  > >
                  > > > octal. But the 3P+S manual assumes hex.
                  > > >
                  > > >
                  > > > -Martin
                  > > >
                  > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
                  > > > >
                  > > > >
                  > > > >
                  > > > >
                  > > > > You'd have to make a slight adjustment though, MITS BASIC uses ports
                  > 20/21,
                  > >
                  > > > right? Or change BASIC to use 10/11.
                  > > > >
                  > > > > > from page III-1, you can set the address of the 3P+S to 00 in Area A:
                  > > > >
                  > > > > A4 jumpered to V+
                  > > > > A2,A3,A5-A7 all jumpered to GND
                  > > > >
                  > > > > I'd have to take a look at the manual, I am sure it's just a different
                  > > > variation to go from 10/11 to 20/21. Or is this the same thing - that whole
                  >
                  > > > "shadow ports" thing.
                  > > > >
                  > > > >
                  > > > > > The standard address for a MITS 2SIO port 0 is Control/Status at
                  > > > > > address 10h and Data Out/In at Address 11h.
                  > > > >
                  > > >
                  > > >
                  > > >
                  > > >
                  > > > ------------------------------------
                  > > >
                  > > > Yahoo! Groups Links
                  > > >
                  > >
                  > >
                  > >
                  > >
                  > > ------------------------------------
                  > >
                  > > Yahoo! Groups Links
                  > >
                  >
                  >
                  >
                  >
                  > ------------------------------------
                  >
                  > Yahoo! Groups Links
                  >
                  >
                  >
                  >
                  >
                • corey986
                  My manual was downloaded I think from your site LOL.... Seriously. I guess I m used to a different writing style. It took me three readings but the manual
                  Message 8 of 15 , Oct 10, 2012
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                    My manual was downloaded I think from your site LOL....

                    Seriously. I guess I'm used to a different writing style. It took me three readings but the manual finally makes sense. I think may may not be the manual as much as the card layout trying to be described by the manual.

                    My card is also very "Kludgey" I think it goes with the territory of having so many solder-able jumpers. If they would have made the card layout a bit better I think that the kludge issue would be leas prevalent and the documentation easier to read.

                    Cheers,
                    Corey

                    --- In altaircomputerclub@yahoogroups.com, Systems Glitch <systems.glitch@...> wrote:
                    >
                    > We must have different manuals. Mine was very clearly written and informative...though I believe it was original to the card I've got. The card was /extremely/ beat up, really bad kludges everywhere, but cleaned up nicely.
                    >
                    > While the 3P+S uses a "different" UART than the MITS rev 0 serial board, they're pretty much the same. There were a lot of "different" 40-pin UARTs out there by various manufacturers; however, almost all of them conform to the Western Digital TR1602A spec/pinout. Some of the newer CMOS ones (as used in the TRS-80 Model 100, for example) are lower power and support a higher max baud rate. More or less, if the same dual power supply voltages are used, it's 40 pin, and you're not driving it at too high a baud rate, it'll work in the 3P+S/MITS rev 0/SSM IO-2/SSM IO-4/et c.
                    >
                    > But yes, the 3P+S is versatile enough to emulate most non-VLSI UARTS. You can easily emulate the 6850 or 8251. I don't think it would be possible to fully emulate something as complex as the Zilog 8530 SCC, but you're not likely to be trying to emulate that device on vintage hardware.
                    >
                    > I've though about putting together a 40-pin UART based S-100 board for new production, but there hasn't been any interest in doing so. They're quite versatile, and require zero software setup to get up and going. It's even possible to push data from something else into a 40-pin UART without a microprocessor/microcontroller.
                    >
                    > Thanks,
                    > Jonathan
                    >
                    > On Wed, 10 Oct 2012 12:06:40 -0400 (EDT)
                    > B Degnan <billdeg@...> wrote:
                    >
                    > > There are a lot more 3P+S's around, that's for sure.
                    > >
                    > >
                    > >
                    > >
                    > >
                    > >
                    > > -----Original Message-----
                    > > From: corey986 <no_reply@yahoogroups.com>
                    > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                    > > Sent: Wed, Oct 10, 2012 11:58 am
                    > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
                    > >
                    > >
                    > > Yep, got it...
                    > >
                    > > Hopefully I can document the jumper'ing in pictures. I'm sure I'm not the only
                    > > one who wants to do this (Unless someone wants to sell me a MITS 88-2SIO with
                    > > rs232 support)
                    > >
                    > > Cheers
                    > > Corey...
                    > >
                    > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
                    > > >
                    > > > Just to be clear, I was mistaken. I mis-read "10/11H" and was thinking he
                    > > meant 10/11 octal. There is no reason to believe Martin's PTEC 3P+S config
                    > > would not work. Let us know if you try it.
                    > > > Bill
                    > > >
                    > > >
                    > > >
                    > > >
                    > > >
                    > > >
                    > > >
                    > > > -----Original Message-----
                    > > > From: corey986 <no_reply@yahoogroups.com>
                    > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                    > > > Sent: Wed, Oct 10, 2012 11:22 am
                    > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
                    > > >
                    > > >
                    > > > Either way... I appreciate all the information from both you guys. I hope to
                    > > > re-jumper the entire board just to be sure. The person who built this one
                    > > > didn't use any of the "DIP" connectors, so out will come the desoldering
                    > > station
                    > > > (this thing has really paid for itself with this Altair).
                    > > >
                    > > > Cheers,
                    > > > Corey
                    > > >
                    > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
                    > > > >
                    > > > > My Spidey senses were telling me I might be wrong, thanks for affirmation on
                    > >
                    > > > your solution, I would have been spinning my wheels on that one before I
                    > > figured
                    > > > it out.
                    > > > > Bill
                    > > > >
                    > > > >
                    > > > >
                    > > > >
                    > > > >
                    > > > >
                    > > > >
                    > > > > -----Original Message-----
                    > > > > From: mfeberhard <eberhard@>
                    > > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                    > > > > Sent: Tue, Oct 9, 2012 9:55 pm
                    > > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS Basic...
                    > > > >
                    > > > >
                    > > > > Tee hee...
                    > > > >
                    > > > > 10h/11h is the same thing as 20 octal/21 octal. Remember that MITS always
                    > > used
                    > > >
                    > > > > octal. But the 3P+S manual assumes hex.
                    > > > >
                    > > > >
                    > > > > -Martin
                    > > > >
                    > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@> wrote:
                    > > > > >
                    > > > > >
                    > > > > >
                    > > > > >
                    > > > > > You'd have to make a slight adjustment though, MITS BASIC uses ports
                    > > 20/21,
                    > > >
                    > > > > right? Or change BASIC to use 10/11.
                    > > > > >
                    > > > > > > from page III-1, you can set the address of the 3P+S to 00 in Area A:
                    > > > > >
                    > > > > > A4 jumpered to V+
                    > > > > > A2,A3,A5-A7 all jumpered to GND
                    > > > > >
                    > > > > > I'd have to take a look at the manual, I am sure it's just a different
                    > > > > variation to go from 10/11 to 20/21. Or is this the same thing - that whole
                    > >
                    > > > > "shadow ports" thing.
                    > > > > >
                    > > > > >
                    > > > > > > The standard address for a MITS 2SIO port 0 is Control/Status at
                    > > > > > > address 10h and Data Out/In at Address 11h.
                    > > > > >
                    > > > >
                    > > > >
                    > > > >
                    > > > >
                    > > > > ------------------------------------
                    > > > >
                    > > > > Yahoo! Groups Links
                    > > > >
                    > > >
                    > > >
                    > > >
                    > > >
                    > > > ------------------------------------
                    > > >
                    > > > Yahoo! Groups Links
                    > > >
                    > >
                    > >
                    > >
                    > >
                    > > ------------------------------------
                    > >
                    > > Yahoo! Groups Links
                    > >
                    > >
                    > >
                    > >
                    > >
                    >
                  • Systems Glitch
                    ... Can t be -- I haven t done a writeup yet! (I run glitchwrks.com) I really need to get around to writing more projects up... ... It seems to depend on
                    Message 9 of 15 , Oct 10, 2012
                    • 0 Attachment
                      > My manual was downloaded I think from your site LOL....

                      Can't be -- I haven't done a writeup yet! (I run glitchwrks.com) I really need to get around to writing more projects up...

                      > My card is also very "Kludgey" I think it goes with the territory of having so many solder-able jumpers. If they would have made the card layout a bit better I think that the kludge issue would be leas prevalent and the documentation easier to read.

                      It seems to depend on whether the user /thought/ they were going to strap the card once and use it like that forever, or if they realized at assembly time they'd be re-jumpering it all of the time. I like to replace wire jumpers with single-pin sockets removed from broken machine pin sockets, like this:

                      http://glitchwrks.com/images/s100/io2rom/deviceselect.jpg

                      Thanks,
                      Jonathan
                    • corey986
                      I was being funny about the download that s why a LOL d... But seriously great idea about the socket pins. Cheers, Corey
                      Message 10 of 15 , Oct 10, 2012
                      • 0 Attachment
                        I was being funny about the download that's why a LOL'd...

                        But seriously great idea about the socket pins.

                        Cheers,
                        Corey

                        --- In altaircomputerclub@yahoogroups.com, Systems Glitch <systems.glitch@...> wrote:
                        >
                        > > My manual was downloaded I think from your site LOL....
                        >
                        > Can't be -- I haven't done a writeup yet! (I run glitchwrks.com) I really need to get around to writing more projects up...
                        >
                        > > My card is also very "Kludgey" I think it goes with the territory of having so many solder-able jumpers. If they would have made the card layout a bit better I think that the kludge issue would be leas prevalent and the documentation easier to read.
                        >
                        > It seems to depend on whether the user /thought/ they were going to strap the card once and use it like that forever, or if they realized at assembly time they'd be re-jumpering it all of the time. I like to replace wire jumpers with single-pin sockets removed from broken machine pin sockets, like this:
                        >
                        > http://glitchwrks.com/images/s100/io2rom/deviceselect.jpg
                        >
                        > Thanks,
                        > Jonathan
                        >
                      • Jack Rubin
                        Corey - I don t want to sound curmudgeonly but you re kind of missing the vintage hacker ethos here - The original builders of systems like this (Altair, Proc
                        Message 11 of 15 , Oct 10, 2012
                        • 0 Attachment
                          Corey -

                          I don't want to sound curmudgeonly but you're kind of missing the vintage
                          hacker ethos here -

                          The original builders of systems like this (Altair, Proc Tech, etc.) were
                          often more concerned with getting _anything_ to work than with coordinating
                          matched components or attaining artisan-level craftsmanship. Of course there
                          were some who did beautiful work but many truly hacked their way through
                          stuff, scrounging surplus components and assembling what they could into
                          something that hopefully worked in the end. The SSM cards and similar items
                          from Jade, WAMECO, etc. were valued _because_ they could be easily kludged
                          to work with wide range of input and output devices. Power, buffering and
                          the rudiments of addressing were provided. The rest was up to you.

                          Builders expected to work from manufacturers' data sheets and shared
                          information. Many were radio amateurs who habitually modified their
                          equipment and weren't hesitant to make changes/improvements as they went.
                          Also, don't forget that the Altair immediately created an aftermarket due to
                          delivery delays and questionable design decisions, especially in the front
                          panel, power supply and memory cards. One of the first companies to step in
                          was Parasitic Designs (Howard Fullmer and George Morrow) who mocked Ed
                          Roberts' attempt to protect his design from "parasites". Proc Tech was
                          similar - their first success was replacement memory for the Altair.
                          Mix-and-match were the norm for most hobbyists.

                          Anyhow, you're doing a beautiful job and getting great advice, but you're
                          creating a work of art, not a typical hobbyist micro of the early '70s. You
                          may be on the leading edge of the next wave of restoration, making the
                          machines better than new.

                          Back under my rock -
                          Jack

                          > -----Original Message-----
                          > From: altaircomputerclub@yahoogroups.com
                          > [mailto:altaircomputerclub@yahoogroups.com] On Behalf Of corey986
                          > Sent: Wednesday, October 10, 2012 7:22 PM
                          > To: altaircomputerclub@yahoogroups.com
                          > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS
                          > Basic...
                          >
                          > My manual was downloaded I think from your site LOL....
                          >
                          > Seriously. I guess I'm used to a different writing style. It took me
                          > three readings but the manual finally makes sense. I think may may not
                          > be the manual as much as the card layout trying to be described by the
                          > manual.
                          >
                          > My card is also very "Kludgey" I think it goes with the territory of
                          > having so many solder-able jumpers. If they would have made the card
                          > layout a bit better I think that the kludge issue would be leas
                          > prevalent and the documentation easier to read.
                          >
                          > Cheers,
                          > Corey
                          >
                          > --- In altaircomputerclub@yahoogroups.com, Systems Glitch
                          > <systems.glitch@...> wrote:
                          > >
                          > > We must have different manuals. Mine was very clearly written and
                          > informative...though I believe it was original to the card I've got.
                          > The card was /extremely/ beat up, really bad kludges everywhere, but
                          > cleaned up nicely.
                          > >
                          > > While the 3P+S uses a "different" UART than the MITS rev 0 serial
                          > board, they're pretty much the same. There were a lot of "different"
                          > 40-pin UARTs out there by various manufacturers; however, almost all of
                          > them conform to the Western Digital TR1602A spec/pinout. Some of the
                          > newer CMOS ones (as used in the TRS-80 Model 100, for example) are
                          > lower power and support a higher max baud rate. More or less, if the
                          > same dual power supply voltages are used, it's 40 pin, and you're not
                          > driving it at too high a baud rate, it'll work in the 3P+S/MITS rev
                          > 0/SSM IO-2/SSM IO-4/et c.
                          > >
                          > > But yes, the 3P+S is versatile enough to emulate most non-VLSI UARTS.
                          > You can easily emulate the 6850 or 8251. I don't think it would be
                          > possible to fully emulate something as complex as the Zilog 8530 SCC,
                          > but you're not likely to be trying to emulate that device on vintage
                          > hardware.
                          > >
                          > > I've though about putting together a 40-pin UART based S-100 board
                          > for new production, but there hasn't been any interest in doing so.
                          > They're quite versatile, and require zero software setup to get up and
                          > going. It's even possible to push data from something else into a 40-
                          > pin UART without a microprocessor/microcontroller.
                          > >
                          > > Thanks,
                          > > Jonathan
                          > >
                          > > On Wed, 10 Oct 2012 12:06:40 -0400 (EDT) B Degnan <billdeg@...>
                          > wrote:
                          > >
                          > > > There are a lot more 3P+S's around, that's for sure.
                          > > >
                          > > >
                          > > >
                          > > >
                          > > >
                          > > >
                          > > > -----Original Message-----
                          > > > From: corey986 <no_reply@yahoogroups.com>
                          > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                          > > > Sent: Wed, Oct 10, 2012 11:58 am
                          > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS
                          > Basic...
                          > > >
                          > > >
                          > > > Yep, got it...
                          > > >
                          > > > Hopefully I can document the jumper'ing in pictures. I'm sure I'm
                          > > > not the only one who wants to do this (Unless someone wants to sell
                          > > > me a MITS 88-2SIO with
                          > > > rs232 support)
                          > > >
                          > > > Cheers
                          > > > Corey...
                          > > >
                          > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@>
                          > wrote:
                          > > > >
                          > > > > Just to be clear, I was mistaken. I mis-read "10/11H" and was
                          > > > > thinking he
                          > > > meant 10/11 octal. There is no reason to believe Martin's PTEC
                          > 3P+S config
                          > > > would not work. Let us know if you try it.
                          > > > > Bill
                          > > > >
                          > > > >
                          > > > >
                          > > > >
                          > > > >
                          > > > >
                          > > > >
                          > > > > -----Original Message-----
                          > > > > From: corey986 <no_reply@yahoogroups.com>
                          > > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                          > > > > Sent: Wed, Oct 10, 2012 11:22 am
                          > > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS
                          > Basic...
                          > > > >
                          > > > >
                          > > > > Either way... I appreciate all the information from both you
                          > guys.
                          > > > > I hope to re-jumper the entire board just to be sure. The person
                          > > > > who built this one didn't use any of the "DIP" connectors, so out
                          > > > > will come the desoldering
                          > > > station
                          > > > > (this thing has really paid for itself with this Altair).
                          > > > >
                          > > > > Cheers,
                          > > > > Corey
                          > > > >
                          > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@>
                          > wrote:
                          > > > > >
                          > > > > > My Spidey senses were telling me I might be wrong, thanks for
                          > > > > > affirmation on
                          > > >
                          > > > > your solution, I would have been spinning my wheels on that one
                          > > > > before I
                          > > > figured
                          > > > > it out.
                          > > > > > Bill
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > > -----Original Message-----
                          > > > > > From: mfeberhard <eberhard@>
                          > > > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                          > > > > > Sent: Tue, Oct 9, 2012 9:55 pm
                          > > > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and
                          > MITS Basic...
                          > > > > >
                          > > > > >
                          > > > > > Tee hee...
                          > > > > >
                          > > > > > 10h/11h is the same thing as 20 octal/21 octal. Remember that
                          > > > > > MITS always
                          > > > used
                          > > > >
                          > > > > > octal. But the 3P+S manual assumes hex.
                          > > > > >
                          > > > > >
                          > > > > > -Martin
                          > > > > >
                          > > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@>
                          > wrote:
                          > > > > > >
                          > > > > > >
                          > > > > > >
                          > > > > > >
                          > > > > > > You'd have to make a slight adjustment though, MITS BASIC
                          > > > > > > uses ports
                          > > > 20/21,
                          > > > >
                          > > > > > right? Or change BASIC to use 10/11.
                          > > > > > >
                          > > > > > > > from page III-1, you can set the address of the 3P+S to 00
                          > in Area A:
                          > > > > > >
                          > > > > > > A4 jumpered to V+
                          > > > > > > A2,A3,A5-A7 all jumpered to GND
                          > > > > > >
                          > > > > > > I'd have to take a look at the manual, I am sure it's just a
                          > > > > > > different
                          > > > > > variation to go from 10/11 to 20/21. Or is this the same thing
                          > > > > > - that whole
                          > > >
                          > > > > > "shadow ports" thing.
                          > > > > > >
                          > > > > > >
                          > > > > > > > The standard address for a MITS 2SIO port 0 is
                          > > > > > > > Control/Status at address 10h and Data Out/In at Address
                          > 11h.
                          > > > > > >
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > >
                          > > > > > ------------------------------------
                          > > > > >
                          > > > > > Yahoo! Groups Links
                          > > > > >
                          > > > >
                          > > > >
                          > > > >
                          > > > >
                          > > > > ------------------------------------
                          > > > >
                          > > > > Yahoo! Groups Links
                          > > > >
                          > > >
                          > > >
                          > > >
                          > > >
                          > > > ------------------------------------
                          > > >
                          > > > Yahoo! Groups Links
                          > > >
                          > > >
                          > > >
                          > > >
                          > > >
                          > >
                          >
                          >
                          >
                          >
                          > ------------------------------------
                          >
                          > Yahoo! Groups Links
                          >
                          >
                          >
                          > -----
                          > No virus found in this message.
                          > Checked by AVG - www.avg.com
                          > Version: 2013.0.2677 / Virus Database: 2591/5822 - Release Date:
                          > 10/10/12
                        • corey986
                          Jack, I do get it. I remember being a kid in those days back in Long Island and there were two schools. The radio/hobby guys who would hack and improve on
                          Message 12 of 15 , Oct 10, 2012
                          • 0 Attachment
                            Jack,

                            I do get it. I remember being a kid in those days back in Long Island and there were two schools. The radio/hobby guys who would hack and improve on everything and the "Grumman" guys who would find or make a special wrench just to a bolt in a tight spot without scratching something. They really were in two extremes. I had family members in both. In a lot of cases it's a personality thing. I remember helping to restore a vintage car with my dad back in the late 70's (ok, I didn't do much at that age, but my dad made me think I was part of the project with little tasks). you could go two ways, just like building a computer back then.. Hot rod/hacked up or back to bone stock original. Same idea. We went stock, even to the point of getting screws and bolts from Europe.

                            I'm still a bone stock guy, I won't do any non-standard work on any of my cars. My motto is no-hacks unless they are factory approved ;-)

                            Thanks again to everyone for their help and of course for putting up with my must be pretty and "stock" neuroticness. Trust me I'm not just with way with computers...

                            Cheers,
                            Corey

                            --- In altaircomputerclub@yahoogroups.com, "Jack Rubin" <jack.rubin@...> wrote:
                            >
                            > Corey -
                            >
                            > I don't want to sound curmudgeonly but you're kind of missing the vintage
                            > hacker ethos here -
                            >
                            > The original builders of systems like this (Altair, Proc Tech, etc.) were
                            > often more concerned with getting _anything_ to work than with coordinating
                            > matched components or attaining artisan-level craftsmanship. Of course there
                            > were some who did beautiful work but many truly hacked their way through
                            > stuff, scrounging surplus components and assembling what they could into
                            > something that hopefully worked in the end. The SSM cards and similar items
                            > from Jade, WAMECO, etc. were valued _because_ they could be easily kludged
                            > to work with wide range of input and output devices. Power, buffering and
                            > the rudiments of addressing were provided. The rest was up to you.
                            >
                            > Builders expected to work from manufacturers' data sheets and shared
                            > information. Many were radio amateurs who habitually modified their
                            > equipment and weren't hesitant to make changes/improvements as they went.
                            > Also, don't forget that the Altair immediately created an aftermarket due to
                            > delivery delays and questionable design decisions, especially in the front
                            > panel, power supply and memory cards. One of the first companies to step in
                            > was Parasitic Designs (Howard Fullmer and George Morrow) who mocked Ed
                            > Roberts' attempt to protect his design from "parasites". Proc Tech was
                            > similar - their first success was replacement memory for the Altair.
                            > Mix-and-match were the norm for most hobbyists.
                            >
                            > Anyhow, you're doing a beautiful job and getting great advice, but you're
                            > creating a work of art, not a typical hobbyist micro of the early '70s. You
                            > may be on the leading edge of the next wave of restoration, making the
                            > machines better than new.
                            >
                            > Back under my rock -
                            > Jack
                            >
                            > > -----Original Message-----
                            > > From: altaircomputerclub@yahoogroups.com
                            > > [mailto:altaircomputerclub@yahoogroups.com] On Behalf Of corey986
                            > > Sent: Wednesday, October 10, 2012 7:22 PM
                            > > To: altaircomputerclub@yahoogroups.com
                            > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS
                            > > Basic...
                            > >
                            > > My manual was downloaded I think from your site LOL....
                            > >
                            > > Seriously. I guess I'm used to a different writing style. It took me
                            > > three readings but the manual finally makes sense. I think may may not
                            > > be the manual as much as the card layout trying to be described by the
                            > > manual.
                            > >
                            > > My card is also very "Kludgey" I think it goes with the territory of
                            > > having so many solder-able jumpers. If they would have made the card
                            > > layout a bit better I think that the kludge issue would be leas
                            > > prevalent and the documentation easier to read.
                            > >
                            > > Cheers,
                            > > Corey
                            > >
                            > > --- In altaircomputerclub@yahoogroups.com, Systems Glitch
                            > > <systems.glitch@> wrote:
                            > > >
                            > > > We must have different manuals. Mine was very clearly written and
                            > > informative...though I believe it was original to the card I've got.
                            > > The card was /extremely/ beat up, really bad kludges everywhere, but
                            > > cleaned up nicely.
                            > > >
                            > > > While the 3P+S uses a "different" UART than the MITS rev 0 serial
                            > > board, they're pretty much the same. There were a lot of "different"
                            > > 40-pin UARTs out there by various manufacturers; however, almost all of
                            > > them conform to the Western Digital TR1602A spec/pinout. Some of the
                            > > newer CMOS ones (as used in the TRS-80 Model 100, for example) are
                            > > lower power and support a higher max baud rate. More or less, if the
                            > > same dual power supply voltages are used, it's 40 pin, and you're not
                            > > driving it at too high a baud rate, it'll work in the 3P+S/MITS rev
                            > > 0/SSM IO-2/SSM IO-4/et c.
                            > > >
                            > > > But yes, the 3P+S is versatile enough to emulate most non-VLSI UARTS.
                            > > You can easily emulate the 6850 or 8251. I don't think it would be
                            > > possible to fully emulate something as complex as the Zilog 8530 SCC,
                            > > but you're not likely to be trying to emulate that device on vintage
                            > > hardware.
                            > > >
                            > > > I've though about putting together a 40-pin UART based S-100 board
                            > > for new production, but there hasn't been any interest in doing so.
                            > > They're quite versatile, and require zero software setup to get up and
                            > > going. It's even possible to push data from something else into a 40-
                            > > pin UART without a microprocessor/microcontroller.
                            > > >
                            > > > Thanks,
                            > > > Jonathan
                            > > >
                            > > > On Wed, 10 Oct 2012 12:06:40 -0400 (EDT) B Degnan <billdeg@>
                            > > wrote:
                            > > >
                            > > > > There are a lot more 3P+S's around, that's for sure.
                            > > > >
                            > > > >
                            > > > >
                            > > > >
                            > > > >
                            > > > >
                            > > > > -----Original Message-----
                            > > > > From: corey986 <no_reply@yahoogroups.com>
                            > > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                            > > > > Sent: Wed, Oct 10, 2012 11:58 am
                            > > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS
                            > > Basic...
                            > > > >
                            > > > >
                            > > > > Yep, got it...
                            > > > >
                            > > > > Hopefully I can document the jumper'ing in pictures. I'm sure I'm
                            > > > > not the only one who wants to do this (Unless someone wants to sell
                            > > > > me a MITS 88-2SIO with
                            > > > > rs232 support)
                            > > > >
                            > > > > Cheers
                            > > > > Corey...
                            > > > >
                            > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@>
                            > > wrote:
                            > > > > >
                            > > > > > Just to be clear, I was mistaken. I mis-read "10/11H" and was
                            > > > > > thinking he
                            > > > > meant 10/11 octal. There is no reason to believe Martin's PTEC
                            > > 3P+S config
                            > > > > would not work. Let us know if you try it.
                            > > > > > Bill
                            > > > > >
                            > > > > >
                            > > > > >
                            > > > > >
                            > > > > >
                            > > > > >
                            > > > > >
                            > > > > > -----Original Message-----
                            > > > > > From: corey986 <no_reply@yahoogroups.com>
                            > > > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                            > > > > > Sent: Wed, Oct 10, 2012 11:22 am
                            > > > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and MITS
                            > > Basic...
                            > > > > >
                            > > > > >
                            > > > > > Either way... I appreciate all the information from both you
                            > > guys.
                            > > > > > I hope to re-jumper the entire board just to be sure. The person
                            > > > > > who built this one didn't use any of the "DIP" connectors, so out
                            > > > > > will come the desoldering
                            > > > > station
                            > > > > > (this thing has really paid for itself with this Altair).
                            > > > > >
                            > > > > > Cheers,
                            > > > > > Corey
                            > > > > >
                            > > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@>
                            > > wrote:
                            > > > > > >
                            > > > > > > My Spidey senses were telling me I might be wrong, thanks for
                            > > > > > > affirmation on
                            > > > >
                            > > > > > your solution, I would have been spinning my wheels on that one
                            > > > > > before I
                            > > > > figured
                            > > > > > it out.
                            > > > > > > Bill
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > > -----Original Message-----
                            > > > > > > From: mfeberhard <eberhard@>
                            > > > > > > To: altaircomputerclub <altaircomputerclub@yahoogroups.com>
                            > > > > > > Sent: Tue, Oct 9, 2012 9:55 pm
                            > > > > > > Subject: [Altair Computer Club] Re: Processor Tech 3P+S and
                            > > MITS Basic...
                            > > > > > >
                            > > > > > >
                            > > > > > > Tee hee...
                            > > > > > >
                            > > > > > > 10h/11h is the same thing as 20 octal/21 octal. Remember that
                            > > > > > > MITS always
                            > > > > used
                            > > > > >
                            > > > > > > octal. But the 3P+S manual assumes hex.
                            > > > > > >
                            > > > > > >
                            > > > > > > -Martin
                            > > > > > >
                            > > > > > > --- In altaircomputerclub@yahoogroups.com, B Degnan <billdeg@>
                            > > wrote:
                            > > > > > > >
                            > > > > > > >
                            > > > > > > >
                            > > > > > > >
                            > > > > > > > You'd have to make a slight adjustment though, MITS BASIC
                            > > > > > > > uses ports
                            > > > > 20/21,
                            > > > > >
                            > > > > > > right? Or change BASIC to use 10/11.
                            > > > > > > >
                            > > > > > > > > from page III-1, you can set the address of the 3P+S to 00
                            > > in Area A:
                            > > > > > > >
                            > > > > > > > A4 jumpered to V+
                            > > > > > > > A2,A3,A5-A7 all jumpered to GND
                            > > > > > > >
                            > > > > > > > I'd have to take a look at the manual, I am sure it's just a
                            > > > > > > > different
                            > > > > > > variation to go from 10/11 to 20/21. Or is this the same thing
                            > > > > > > - that whole
                            > > > >
                            > > > > > > "shadow ports" thing.
                            > > > > > > >
                            > > > > > > >
                            > > > > > > > > The standard address for a MITS 2SIO port 0 is
                            > > > > > > > > Control/Status at address 10h and Data Out/In at Address
                            > > 11h.
                            > > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > >
                            > > > > > > ------------------------------------
                            > > > > > >
                            > > > > > > Yahoo! Groups Links
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                            > > > > >
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                            > > > > > Yahoo! Groups Links
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                            > >
                            > > ------------------------------------
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                            > >
                            > >
                            > >
                            > > -----
                            > > No virus found in this message.
                            > > Checked by AVG - www.avg.com
                            > > Version: 2013.0.2677 / Virus Database: 2591/5822 - Release Date:
                            > > 10/10/12
                            >
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