[Coco] MPROM woes (cured)

[Darren A]

On 11/16/08, Bruce W. Calkins wrote:
>
> ----- Original Message -----
> From: "Roger Taylor"
>>
>> I've got 25 of the 27512's and unless I can pin-wire them to act
>> like a 27256 or below, they're useless in my CoCo projects.
>> --
>> Roger Taylor
>
> Kindly keep us posted as to how that project goes.
> I have a few 27512 pulls on hands myself.
>
> Bruce W.
>
> --

I have a 27512 EPROM in my FD-502 disk controller. It works great so
long as you program the code into the upper end of the device. This is
due to the fact that the 502 connects +5V to the extra address pins
used by the 27512. No wiring adapter is needed.

Getting the MPROM to program a 27512 may be a more challenging (if not
impossible) endeavor.

Darren