[Coco] Super Cartridge

[Luis Antoniosi (CoCoDemus)]

I/O ports are at FF00 - FFFF.

A bank switching register ? Pretty much like the superIDE banks ?

Coco3 games like predator, robocop they have way more then 8KB. They should
work on the same manner.



On Wed, Jan 16, 2013 at 4:02 PM, Juan Castro <jccyc1965 at gmail.com> wrote:

> On Wed, Jan 16, 2013 at 6:50 PM, john dumas <JohnDumas at austin.rr.com>
> wrote:
> > On 1/15/2013 9:38 AM, Luis Fernández wrote:
> >>
> >> There is the possibility of having a cartridge that can accommodate all
> cartridges coco, perhaps with a SD memory and through switches or display
> can select say 300 and that they pass the address & hC0000 as cartridges
> true (perhaps read only as rom) and so they can be used by machines without
> HDBDOS or RGBDOS or Nitros9, or even by machines 4k, 16k, 32k ....
> >
> > Possible so.
> > I did something similiar with an Atari 2600 cartridge.
> > A large flash eprom with the upper addresses controlled by miniature
> switches.......
> >
> > Of course the atari cart is a simpler beast with no interrupt, etc. And
> there are only a couple of discrete rom sizes to emulate......unless you
> add bank switching hardware, which I did not. The early, real classic,
> games didn't use bank switching and those are what I wanted to play........
> >
> > No doubt the hardware gurus here could crank out a much better cart
> design for the coco.
>
> Allow me the opportunity to ask a related question: how do 32KB
> cartridges in the CoCo work? I thought the only address space
> available to them was from C000 on, I/O ports excepted.
>
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Long live the CoCo