> DIP-switches? That's strange... Would it be possible to convert it to an
> 'automatic' slot expander? I have a bit of experience in electronics, but
> not enough to figure out from scratch how a slot-expander for MSX works. So
> if you can send me a copy, I'd be grateful.
Sorry, I didn't read the whole article. Yes, it has DIP-switches, but
also you can define a I/O-port with which you can switch through
software. ( out &H3F,3 = switch to slot 3)
But, the slotswitcher is still not a expander in the sense of the MSX
standard: It is only a primairy slot.
In order to be a expanded MSX slot, you would have to catch writes to
the address FFFFh, or -1, and use this information (per 16K block) together
with adresslines A0..A13, to enable the subslots.
I don't know how difficult this is to put in it!
Send me your postal adress, and I'll send you a copy.
Joost Klootwijk - [EMAIL PROTECTED]
> Pierre
>
> > It is a slotswitcher for 8 cartridges, where there is only one
> > cartridge active at a time! (selected by dipswitches)
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