[Coco] [Color Computer] Multi-pak hardware ?

[Chris Hawks]

---Reply to mail from Phill Harvey-Smith about [Coco] [Color Computer] Multi-pak hardware ?

> Can't remember if I asked this before, does anyone have details of the 
> multi-pak hardware ? What hardware addresses did it use and what method 
> did it use to actullay switch between carts ?

Phill:

    The multi-pak uses address $ff7f (65407) to control which slot is
active. The least significant 2 bits of each nibble control which slot.
The high nibble is ROM select and the low is I/O.

Poke &hff7f,&h00    (slot 1)
Poke &hff7f,&h11    (slot 2)
Poke &hff7f,&h22    (slot 3)
Poke &hff7f,&h33    (slot 4)

Poke &hff7f,&h23    (Rom in slot 3, i/o from slot4)


---End reply

Christopher R. Hawks
HAWKSoft
-------------------------------------------------------------------------
Any research done on how to efficiently use computers has been long lost
in the mad rush to upgrade systems to do things that aren't needed by
people who don't understand what they are really supposed to do with them.
    -- Graham Reed, in a.s.r.