[Coco] 32K carts?

[Roger Taylor]

At 12:21 PM 10/22/2007, you wrote:

>It seems to work like this.

>When the gime is set to 16K Internal /16K External the internal rom 

>runs from $8000 to $C000 and the External rom runs from $C001 to 

>Whatever. We all know that. When you switch to 32K External it gets wierd.

>$C001 to Whatever is mapped to the first 16K of the ROM and $8000 to 

>$C000 maps to the last 16K of the ROM. This makes sense as any code 

>running from rom say at $C??? would need to turn on 32K External 

>mode, but when that happens if it was a liner map the code that was 

>executing would "jump up" 16K.

>Hope I've explained this so others can understand.

>When I get home I'll hack up a test version of VCC and see exactly 

>what Arkanoid is doing. IE what GIME registers its trying to hit.




Slight typo, I'm sure, but it's $8000 to $BFFF, then $C000 to ...