[Coco] Can I replace my CoCo 1's ROMs with 2764's?

[Darren A]

On Tue, Dec 4, 2012 at 10:51 AM, Darren A wrote:
> On Tue, Dec 4, 2012 at 10:41 AM, Juan Castro wrote:
>> Or is there some subtle pin-raising & wire-soldering I need to do?
>>
>> https://picasaweb.google.com/lh/photo/t2sguazn9-xPatDBo3ShKW9XcHdiH80reA6_ygAbi6M
>>
>
> The CoCo 1 ROMS have 24 pins. A 2764 has 28 pins.  The DOS Adapter
> from Cloud-9 does the required pin mapping.
>
> The correct 24 pin EPROM replacement is the MCM68764 or MCM68766.  You
> may find some on eBay.
>

I should add that finding a programmer that can burn those 24 pin
EPROMS may be much harder to find than the EPROMs themselves.

Darren