More on BAD CHIP RAM
26-Nov-90 11:31:01
Sb: #7091-More on BAD CHIP RAM
Fm: Gregory B. Tibbs 73767,456
To: MicroSearch/Greg White 72230,1617
The memory board in question is an Insider; it is true fast ram. The
c00000H RAM being autorecognized was implemented due to the need for it in
the Amiga with Zorro I slots and 68010 processor that was never released.
The fact is you can decode any type of memory to any location, provided the
PALs allow you to (if not, make your own)
The OS just happens to find and use that memory. The piggyback hack is
just another instance of someone taking advantage of this feature.
In your example, the piggybacked RAM lives on the chip ram bus and is
indeed half-fast, but that's not pertinent to this argument.
-Greg