RE: [N8VEM-S100:7666] Status of Beginner S100 Bus SBC

Hi Tom,

Normally I would agree and these days I’m a GAL/CPLD convert. But I’m thinking that since this may be the very first S100 board a new user may build I would like to keep the variables/challenges to a minimum. The board is linked 100% with simple 74LSxx chips. The circuits are such that I should be able to write-up fairly straightforward build and debug steps on the web page – explaining what each sub-circuit does. I kind of intend to go overboard on the board build/debug for this one to help first time users get airborne. I continuously get e-mails about “chicken & egg” problems with users getting started in hardware. With this board they should later be able to step by step inactivate sections and go on to build more powerful multiprocessor systems.

Where I will need help is not only some of you double checking the write-up (when it’s done) but I really could use support in doing a CF-Card image downloaded from a PC that will immediately allow booting up a banked CPM/3 system. I really could use one or two volunteers for this. The end goal being:- built a board, pop in that CF card, hook up a Telnet PC USB connection over your laptop and you instantly have a running S100 bus CPM system.

BTW, I managed to get Freerouter to get me a board with only 520 vias. Will send off to Advanced Circuits for prototype tonight. FYI here is a picture of the board layout,

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Tom Lafleur
Sent: Saturday, September 26, 2015 11:18 AM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:7666] Status of Beginner S100 Bus SBC

John...

It is of my option that GAL are ok on a board like this, cost is less that the number of chips it save, saves board space and is easy to program and I'm sure we can find someone to pre-program them for this board if need be...

my two bits

On Sat, Sep 26, 2015 at 11:14 AM, John Monahan <mon...@vitasoft.org> wrote:

Will do Robert but its 4-6 weeks away yet. I will put out an “order” announcement at that time

John

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Robert Greenstreet
Sent: Saturday, September 26, 2015 10:38 AM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:7664] Status of Beginner S100 Bus SBC

Hi John,

Whatever configuration the Beginner S-100 SBC is finalized in:

Please add my name to any list that may be forming for this board.

Thank you,

Robert Greenstreet

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Tom Lafleur