[Coco] ROM Cart registers

Darren A mechacoco at gmail.com
Sun Jan 31 00:41:05 EST 2016


On Sat, Jan 30, 2016 at 8:25 PM, RETRO Innovations wrote:

>
> What is the Flash DATA register?   Is there a Flash Address register as
> well, or is it that when the user tries to store a value in ROM space, you
> pull the data from this register? since normally data is not available on
> the MPI during a ROM address write?
>
>
The data register is used to indirectly write to the flash. With the Write
Enable bit set, the first read of a cartridge ROM address (CTS*) following
a write to the data register, stores the register content to that location
in the flash memory.


- Darren


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