[Coco] Some may call this heresy

[CoCo Demus]

Nope, the 6510 generates a read before a write and I don't understand why.
I couldn't get a reliable read/write on same port so I messed around using
a ROM chip to decode:

IO2|R/W|A7-A0

In this way I can make it to read only from port DF76 but write only on
DF77 and both feed the same port FF76 to the WordPAk. Read to DF77 is
ignored as a write to DF76 as well. I did the same for port FF77 and FF79.





On Mon, May 28, 2018 at 7:13 PM, RETRO Innovations <go4retro at go4retro.com>
wrote:

> On 5/28/2018 2:21 AM, CoCo Demus wrote:
>
>> I successfully made an adapter to use the Coco WordPak-RS on a Commodore
>> 64
>> and also, using the CP/M cartridge you can run a modified CP/M disk to use
>> the WordPAK :)
>>
>> Watch it:
>>
>> https://www.youtube.com/watch?v=XFsHDW1WnaE
>>
>> No WordPak-RS were harmed during this video, and I used my cloned one :)
>>
>> Felipe
>>
>> Well, color me impressed.  I assume the adapter is:
>
>
> PHI2->E
>
> ADDRESS->Address
>
> Data-> Data
>
> IO1 or IO2 -> !SCS
>
> GAME -> CTS
>
> ...
>
>
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