rokicki@navajo.STANFORD.EDU (Tomas Rokicki) (08/19/86)
[ `--\- (for the plane eater) ] So, 1.2 will be in ROM, eh? Sounds neat. Now, can I install those ROMs in my WCS machine, and free the WCS as usable RAM, thus making my $2400 512K system into a $2420 (or thereabouts) 768K system? If no responses, I may open the machine and start tracing wires, unless schematics are available . . . That extra 256K of RAM could come in handy some day, especially since it will be essentially free. I believe the c: directory is less than 256K, correct? -tom rokicki
daveh@cbmvax.cbm.UUCP (Dave Haynie) (08/19/86)
> > [ `--\- (for the plane eater) ] > > So, 1.2 will be in ROM, eh? Sounds neat. Now, can I install those > ROMs in my WCS machine, and free the WCS as usable RAM, thus making > my $2400 512K system into a $2420 (or thereabouts) 768K system? > If no responses, I may open the machine and start tracing wires, > unless schematics are available . . . > > That extra 256K of RAM could come in handy some day, especially > since it will be essentially free. I believe the c: directory is > less than 256K, correct? > > -tom rokicki Schematics are available from Commodore in West Chester, but they won't help you modify a WCS board to ROM and WCS as free RAM. Currently, the WCS board occupies the same physical space on the PC board and logical space in the address map as the ROM. You could conceivably relocate the WCS RAM by rewiring its address selection mechanism somehow, but you'd really have to kludge it to run both the WCS and ROM on the same board. Once you did get everything the way you wanted it, the WCS RAM acting as FAST memory wound be no advantage over any externally added FAST memory. If you're willing to do lots of redesign you might get this scheme to work. It would probably require reprogramming some of the PAL chips as well, so you'd need access to a PAL programmmer. And when its all done, you only get 256K extra -- you'd be much better off with an external memory board with a couple megabytes on it. -- /\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\ Dave Haynie {caip,ihnp4,allegra,seismo}!cbmvax!daveh "I gained nothing at all from Supreme Enlightenment, and for that very reason it is called Supreme Enlightenment." -Gotama Buddha These opinions are my own, though for a small fee they be yours too. \/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/