Adapting S100 to 6502

Discuss construction, troubleshooting, and operation of the Altair 8800c computer

Adapting S100 to 6502

Postby BillO » June 22nd, 2022, 7:37 pm

Has anyone had any experience adapting the S100 bus driven by an 8080A to a 6502 compatible bus?

I have developed a universal bus for 6502 computers and would like to adapt it to the Altair 8800c. I have a ton of I/O cards developed for this bus and it would be GREAT to be able to use them 8800c.

Here is the bus adapted to the OSI C1P/600 Superboard:
IMGP9820.JPG


Here it is adapted for the Vixen. An SBC using the 6502 and designed along the lines of the Arduino and other such plug-in controllers:
IMGP9876.jpg


And here it is incorporated into the expandable Jaguar:
Jag1.jpg


With a few minor exceptions (mostly speed related - the OSI runs at 1MHz the Vixen/Jaguar can run up to 16MHz), any I/O card designed for one machine should work in the others.
Last edited by BillO on June 23rd, 2022, 4:45 pm, edited 1 time in total.
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Re: Adapting S100 to 6502

Postby Wayne Parham » June 23rd, 2022, 12:01 pm

Dude, that's so cool!

My first computer was a Synertek System's Sym-1. So I have an affinity for the old KIMs, Syms, PETs and Apples.
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Re: Adapting S100 to 6502

Postby BillO » June 23rd, 2022, 4:47 pm

Wayne Parham wrote:Dude, that's so cool!

My first computer was a Synertek System's Sym-1. So I have an affinity for the old KIMs, Syms, PETs and Apples.


Thanks!

I still have a SYM-1. I don't use it much anymore but I do take it out an play around on it once in a while
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