[Coco] 32K carts?

[Mark McDougall]

Joe wrote:


> 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.


Thanks Joe - that's done the trick. I had to swap the upper and lower 16KB 
in Arkanoid and it runs now! Presumably Rampage has the same issue.

I need to order a couple of more passives now to be able to test the flash 
option and the "Flash2" cart.

For those few interested, I'll do some pricing very soon. I've been 
ultra-busy the last few weeks and have only been able to devote the odd 
minute here-or-there to this project...

Regards,

-- 

|              Mark McDougall                | "Electrical Engineers do it

|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"