GVPserII/2386BB-help!
04-Nov-92 11:16:31
Sb: #75911-GVPserII/2386BB-help!
Fm: Jim Nangano/SYSOP 76703,4254
To: Michael Gerard 75505,1757
Michael,
The Bridgeboard is a Zorro II device. Zorro-II is limited to 24-bits
of address space, which means that the only addresses it knows are within
the lower 16-megs of address space. There are 8 megs of "fast" memory
addresses available in the 16-meg space, and the Bridge's dual port ram
must be assigned from this pool.
Zorro-III memory (and other Z-III cards) has the full 32-bit memory
addressing ability available. Also, the "fast" memory on the 3000's (and
4000's) motherboard is addressed above the 16-meg limit (addresses start
at hex 01000000, where the 24-bit addresses range from hex 00000000
through 00ffffff).
Hope this helps….
– BobR