14091Re: [cosmacelf] Re: Finally I have what I need...
- Jun 2, 2013Why not the STD (Simple to Design) bus? All of the RCA cards were built on the STD bus. It is very well defined.
From: granz_consult <art3@...>
Sent: Sunday, June 2, 2013 4:20 PM
Subject: [cosmacelf] Re: Finally I have what I need...
You may want to consider something like Cromemco's multiprocessor bus (it was called the C-Bus.) This was for the old S-100 systems and was an additional bus on the top of each card; you connected the bus via ribbon cables. This bus allowed the processors to communicate off of the S-100 bus.
Anyway, if you were to give each processor card some memory (maybe a few K of ROM for boot/monitor and some RAM) and then use the common bus for shared memory and I/O, that may do what you were wanting.
Cromemco's IOP was one of the more popular boards for this. You can find the manual at http://www.hartetechnologies.com/manuals/Cromemco/Cromemco%20IOP%20Instruction%20Manual.pdf.
--- In email@example.com, "Richard" <r.dienstknecht@...> wrote:
> ... to start building a new Elf.
> This is a picture: http://oi44.tinypic.com/33js4ys.jpg
> It's a bus board for 10 96 pin connectors and up to four different supply voltages. I Intend to put it into a small PC case and hook it up to the ATX power supply.
> I want to build something like what I wanted to have in the Parallelf a while ago - just without the bus multiplexer for more than one processor. I'm afraid I would have a hard time to get the bus multiplexer working, so it will have to be a more traditional single processor computer with the memory and IO that was intended for the Parallelf.
> Once all this works, I may yet give the bus multiplexer a try, at least if I can get some help :-)
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