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28136Re: [midatlanticretro] Lobo floppy drives

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  • Richard Cini
    Nov 17, 2012
      Bill --

      I emailed the original seller to see if he knows the history of the unit. When I hear back I'll let you know.

      Rich

      --
      Rich Cini
      Collector of Classic Computers
      Build Master and lead engineer, Altair32 Emulator


      From: B Degnan <billdeg@...>
      Reply-To: "midatlanticretro@yahoogroups.com" <midatlanticretro@yahoogroups.com>
      Date: Friday, November 16, 2012 11:47 PM
      To: "midatlanticretro@yahoogroups.com" <midatlanticretro@yahoogroups.com>
      Subject: Re: [midatlanticretro] Lobo floppy drives

       

      Interesting....the S800's in the Intel MDS 720 photoed on my web site also have significantly different jumpers drive 0 vs. drive 1. Maybe that's how it's done, or the boot drive has a lot of differences that the non boot drive. I wonder what this drive was used for.
      bd

      -------- Original Message --------

      > From: "Richard Cini" <rich.cini@...>
      > Sent: Friday, November 16, 2012 11:19 PM
      > To: "midatlanticretro@yahoogroups.com" <midatlanticretro@yahoogroups.com>
      > Subject: Re: [midatlanticretro] Lobo floppy drives
      >
      > Bill --
      >
      > I finished examining and cleaning the interior of the drive enclosure this
      > evening. I took note of the jumpers on both drives ? interestingly there
      > were many differences between the jumper settings, other than what would be
      > expected (i.e., the drive select and the termination).
      >
      > Here are the jumper settings:
      >
      > Drive0: installed ? DS1-T1-X-B-A-Z
      > Drive1: installed ? T2-HL-800-DS2-T3-T4-T5-T6-T1-X-B-A-Z (this drive is at
      > the end of the cable)
      >
      > Drive1 also had a drive_ready modification which resulted in pin22 being put
      > on pin4 of the interface connector (jumper R cut; wire from R to pin 4).
      >
      > Given this configuration I'm not entirely sure what system this might have
      > been used in since the drives are set so differently. So, I reset the
      > jumpers per the CompuPro Disk 1 instructions and once I build a cable, I can
      > try it on my IMSAI. Overall the drives look very clean and free from
      > excessive dust.
      >
      > Rich
      >
      > --
      > Rich Cini
      > Collector of Classic Computers
      > Build Master and lead engineer, Altair32 Emulator
      > http://www.classiccmp.org/cini
      > http://www.classiccmp.org/altair32

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