[Coco] First MC-10 game cart ever?

[Brendan Donahe]

Those definitely sound like a retro-hacker's dream.  It's unfortunate, but
not really unexpected that there are so few with 5V-tolerant IO.  Thanks
for the info.

Brendan

On Wed, Aug 10, 2016 at 1:13 PM, Zippster <zippster278 at gmail.com> wrote:

> Hi Brendan,
>
> I just love the  XC9500XL family of CPLDS.
>
> They have 5v tolerant IO, so they can take in 5v logic without issue,
> and using 3.3V to supply the IO banks makes them 5v TTL compatible
> for output, exceeding the 2.4v OHL by almost a volt.
>
> Perfect for interfacing 5v to 3.3v parts, although the other parts are all
> 5v capable in this case.
>
> I think they’re the only 5v tolerant CPLDs still in production.  All SMT
> at this point.
>
> - Ed
>
>
> > On Aug 10, 2016, at 12:56 PM, Brendan Donahe <brendan at polylith.com>
> wrote:
> >
> > Ed,
> >
> > With that particular Xilinx part, are level shifters unnecessary?  (I
> don't
> > see any between the FPGA and the expansion port connector.)
> >
> > Thanks,
> > Brendan
> >
> > On Wed, Aug 10, 2016 at 12:48 PM, Zippster <zippster278 at gmail.com>
> wrote:
> >
> >> It’s using these boards - <https://drive.google.com/open?id=
> >> 0B1sgl615FlGndzRDQUNzTlJMRms <https://drive.google.com/open?id=
> >> 0B1sgl615FlGndzRDQUNzTlJMRms>>
> >>
> >> Although I realize now the jumpers aren’t needed at all, so they’ll be
> >> removed.  This board adds
> >> 16K ROM and 32K of RAM to the system.
> >>
> >> The folder “MC10 SUPERCART” has the layout for the next version, with
> 512K
> >> each of RAM and FLASH,
> >> YM2149, and game controller ports.
> >>
> >> - Ed
> >>
> >>
> >>
> >>> On Aug 10, 2016, at 12:40 PM, Jayeson Lee-Steere <cocolistemail@
> >> titaniumstudios.com> wrote:
> >>>
> >>> Ed, very cool. What does it look like on the inside?
> >>>
> >>> On Wed, Aug 10, 2016 at 3:07 AM, Zippster <zippster278 at gmail.com>
> wrote:
> >>>
> >>>> Hi guys, this turned out pretty neat, so I thought I'd share this...
> >>>>
> >>>> Darren was kind enough to send me binaries of his two ML games, Flagon
> >> Bird
> >>>> and Space Assault, so I decided to use one of these boards to make a
> >> game
> >>>> cart.
> >>>>
> >>>> Thank you Darren.  :)
> >>>>
> >>>> A little 6803 assembly for a loader, and one of John Strong's MCX
> cases,
> >>>> and there
> >>>> it is.  The binaries are stored in ROM and are copied to RAM and
> >> executed
> >>>> on selection.
> >>>> A third option lets you exit to BASIC, where the additional RAM on the
> >>>> board is available
> >>>> for other uses.  16K for BASIC programs, 32K in all.
> >>>>
> >>>> There's a couple of links below if you want to check it out.
> >>>>
> >>>> - Ed
> >>>>
> >>>>
> >>>> <https://drive.google.com/open?id=0B1sgl615FlGnRUhrZzR4WTBNcDA>
> >>>> <https://drive.google.com/open?id=0B1sgl615FlGnX1JOX1VwYjdnTEk>
> >>>>
> >>>>
> >>>> --
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> >>>> Coco at maltedmedia.com
> >>>> https://pairlist5.pair.net/mailman/listinfo/coco
> >>>>
> >>>
> >>> --
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> >>> Coco at maltedmedia.com
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> >>
> >>
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> >>
> >
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