[Coco] Cartridges that use SCS decoding

Zippster zippster278 at gmail.com
Thu Mar 9 13:44:39 EST 2017


You can use SLENB.  You just need to implement a way to drive it low when you
do your writes to CTS space.  I use it in the PSG to access the 512K SRAM in
CTS space.

- Ed


> On Mar 9, 2017, at 12:37 PM, RETRO Innovations <go4retro at go4retro.com> wrote:
> 
> On 3/9/2017 11:33 AM, Mark J. Blair wrote:
>>> On Mar 9, 2017, at 09:19, Zippster <zippster278 at gmail.com> wrote:
>>> 
>>> I think it’s for reads only with “F” board CoCo 1’s and later.
>>> 
>>> I don’t think it applies to earlier machines, except perhaps if retrofitted to 64K.
>>> 
>>> Look at a CoCo2 schematic.
>> Aw, poo. I think you're right. It looks like my EEPROM pak project will only be writable on early CoCo 1 machines, as currently designed.
> Feel free to ping if you need help getting writes to CTS space working.  CocoFLASH does it.
>> 
>> 
>> 
> 
> 
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