[Coco] First MC-10 game cart ever?

[Mark Marlette]

Ed / Brendan,
Altera's MAX 3000 series CPLDs do the same. No level shift needed.

 MultiVolt I/O interface enabling the device core to run at 3.3 V, 
while I/O pins are compatible with 5.0–V, 3.3–V, and 2.5–V logic 
levels
Preference thing, we use Xilinx at work, I use Altera at home. I like the Altera software much better.

Regards,

Mark Marlette
 http://www.cloud9tech.com
mark at cloud9tech.com



      From: Zippster <zippster278 at gmail.com>
 To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
 Sent: Wednesday, August 10, 2016 1:13 PM
 Subject: Re: [Coco] First MC-10 game cart ever?
   
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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>>>> 
>>> 
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