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



Hi Andrew

I was looking at the schematics - is there any plans to do VGA instead/
as well as composite video.  It seems that composite will push the
limits at 80 columns ?

I will have to order some parts but should have them before the board
arrives.

Dave

On Dec 14, 6:23 pm, lynchaj <lyn...@yahoo.com> wrote:
> Woo Hoo!  Two volunteers!  That's great!
>
> I've uploaded the KiCAD file set, schematics, and PCB layout to the
> N8VEM wiki here:
>
> http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder¶m=S-100%20VDP
>
> OK, so we've got a design and builders to put it together.  This is
> great!
>
> Does anyone want to pitch in to get some prototype PCBs made?
>
> Typically that's $150 for 5 PCBs athttp://www.33each.com
>
> You don't have to pay for it all or even build a board if you want to
> participate.
>
> If you buy a board I can send it to one of the volunteers.
>
> Please remember though this is a high risk venture and no guarrantees
> it will work.
>
> However, I think there is a pretty good chance and if we spread the
> risk and work out a bit everyone benefits!
>
> Thanks and have a nice day!
>
> Andrew Lynch
>
> On Dec 14, 6:50 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