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  • Hi Carlitos, Well, you definitely came to the right group.... I believe I have about 20 or 30 chips on hand. but Lee should have much more than me. I'm sure there are a number of members here that have a nice stash of chips also. The chips from China might not be so bad either... but I've heard many stories of some crooks. I myself have fell victim to one seller. They sold me 10...
    joshbensadon@... May 21
  • Hi Guys, Not many 1802 S-100 boards... but someone here might be interested....? Todd Goodman over at the N8VEM group is doing a run of S-100 back plane boards which I just re-worked so they will fit into either an ALTAIR or IMSAI computer. They can also be cascaded for a longer bus. He is taking orders for the limited run, now is your only chance to get one. Regards, Josh Bensadon...
    joshbensadon@... May 5
  • While you are thinking about it, consider you don't even need RAM or ROM at PIC - 1, you can get away with simply pulling the floating bus to 0x70...
    joshbensadon@... May 1
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  • Sorry I haven't read any good data sheets lately, but the 1877 sounds like a good bed stand book. From what I understand of your description, the 1877 sits on the memory map, R1 then points to it and upon reading this chip, a LBR (0xC0 HH LL) is produced to direct the CPU to 1 of 8 vectors. I suppose you could eliminate the need for R7 if you could map a RET instruction at address...
    joshbensadon@... May 1
  • Hi Patrick From recent posts, the answer is YES. You have two choices. Either contact Flash or Bob. I believe Flash is selling whole kits, while Bob is selling just the board set. I bought a set from Bob a few months back, I think the price was about $35 plus postage. In either case, I recommend you search back through this forum's messages and find those offers to proceed. I...
    joshbensadon@... May 1
  • Nicely done Bill! I can see you've been having fun :) From: "bill rowe bill_rowe_ottawa@^$1 [cosmacelf]" To: "cosmacelf@^$2" Sent: Thursday, April 30, 2015 8:03 AM Subject: [cosmacelf] Olduino Carbot and Wireless Programming [1 Attachment] [ Attachment(s) from bill rowe included below] The neatest thing about the maker movement is the number of little bits and pieces I can easily...
    Josh Bensadon Apr 30
  • I bang my head all the time too, but it never seems to help. Maybe you can fit 2 Membership cards inside? Then it can be a dual processor :) PS. Please stop banging head if you see red. :)J
    joshbensadon@... Apr 22
  • As I recall, people were interested in the wooden box of the Super ELF and they loved your case (but didn't pay much attention to the computers inside). Just the same, it was a lot of fun... but lesson learned is to focus on a few fun ideas and less history. :) :)J
    joshbensadon@... Apr 21
  • Hi Doug, It was very nice to meet you and I love your VIP Demo of what could have been an early spread sheet program for the VIP. The ease of your program to create this demo is amazingly simple. That's good proof that a microprocessors future relies on the software around it. I wonder if the 1802 line would have fared differently if Micro-soft would have written basic for it? How...
    joshbensadon@... Apr 21
  • Hi Dave, I have been delaying my response to this announcement pending my visit to VCF East 10. I attended VCF East today and met Mike Lee and he's told me that we have a table at VCF MW if we would like it. I am attracted by the offer. I want to take what we learned from last years exhibit and come up with something else (not as big, but focused on fun). Is anyone else here...
    joshbensadon@... Apr 18