Re: looking for an S-100 expert builder to build and test prototype board

[yoda <yo...@r2d2.org>]

Hi Andrew

I am a little confused when looking at the schematics and parts list.
You are showing the 4164 as an 18 pin device but everywhere I look it
is a 16 pin device - am I missing something?   Also can a v9958 be
substituted as well?

Dave

On Dec 14, 5:50 am, lynchaj <lyn...@yahoo.com> wrote:
> Hi,
>
> There is an S-100 board project that is ready for prototype build and
> test but the project is "stuck in the mud" due to availability issues
> (aka "real life") of the original design team.
>
> Is there anyone who would like to take on a build and test of a rather
> ambitious S-100 board?  The project I am referring to is the S-100 VDP
> which is a video board based on the V9938/V9958 video display
> processor.
>
> This board has potential for greatly improved color graphics, 80
> column text, etc using the latest of the VDPs which descended from the
> original TMS9918.
>
> I have a design schematic and PCB layout which is ready for prototype
> build and test.  However it will stay on the "black board" until some
> builder can make it a reality.
>
> The design could even be extended to include audio (AY-3-8910 or
> similar) once we get the video section working.  This would provide a
> measure of MSX compatibility for the S-100 bus systems.  There is
> quite a bit of stuff we can export from the N8VEM N8 "all in one"
> project to this board to accelerate an improved design.
>
> This board is deceptively simple looking but is not for the feint of
> heart.  Video boards never are...
>
> Anyone interested?  Thanks and have a nice day!
>
> Andrew Lynch