> > > Just a few more thoughts on s/w and h/w... > > > > > ROM swapping is the trick that I'm going to use... it's SAM > > compatible in the way that the normal ports on the ASIC are going to > > be used as "transfer ports" -- ie they don't access the chips direct > > any more, but get stuffed into latches for the appropriate other > > Good stuff. I was wondering how you were intending to cope with that without > any s/w traps.
*winks* well, now you know :) > > z80's to handle it.. only in SAM emulation mode though. The OS will > > be a DOS, with extension files on disc to hook it and bodge it if > > necessary -- if we can, we'll use EEPROMs so that upgrades can be > > freebies.. > Yeah, sounds like the best bet, especially if you're not mass- producing. > Mmmm.. that's what we thought... nicer too, if you want to put the DOS in ROM -- just in case... > OK, or how about a standard boot-up into one of them, and you can change it > by holding down keys or mouse buttons or whatever. Look at the Amiga, for > example (apologies to anybody who doesn't like me going on and on about the > Amiga, but I happen to think it's a great machine) - on all but the earliest > ROMs you could access a boot menu by holding down both mouse buttons, which > allows you to select the boot device and also to disable any device you like, > if for example, it takes up a chunk of memory that you desperately need for > something else. I think that I can manage that :) > > The Sound unit will work in this way: > > > [ ] > > With standard sound outputs, instead of a DIN plug? (please...) Well... both probably... in the PC case version, that is... we're thinking of doing a version that you can plug your SAM into the back of (note the way I mean that :) :) :) ) Si +----------------INTERNET: [EMAIL PROTECTED] | When walking a tightrope made of razor-blades, be very careful -- | | you won't be able to grab hold of it if you fall. (Si Cooke, '94) | +------------------JANET: [EMAIL PROTECTED]
