IBM 09-0572-000 - Manual (Page 80)

Configuration Options B-5
BIOS/MMIO Address Location
There are 16 possible 8 KB blocks of PC memory that can be
assigned for accessing the ROM area of the 3C619C adapter.
The factory default ROM address for the adapter is
CC000–CDFFF. The 16 ROM address locations are as follows,
with the default in bold:
The BIOS/MMIO address selected must not be assigned for
use by any other adapter or option and cannot be the same
as the RAM address for this adapter. If a system resource
conflict exists, you may have to change the settings of other
adapters or options that are in your PC.
Shared RAM Page Size and Address Range
There are 30 possible blocks of memory that can be assigned
for accessing the RAM located on the 3C619C adapter. The
factory default RAM size and address location for the adapter,
which support RAM paging, are 16 KB / D8000–DBFFF.
RAM paging allows the software to access all 64 KB of RAM on
the adapter one page (16 KB) at a time, while using only 16 KB
of PC memory space. RAM paging is available for all 16 KB
address ranges.
C0000–C1FFF D0000–D1FFF
C2000–C3FFF D2000–D3FFF
C4000–C5FFF D4000–D5FFF
C6000–C7FFF D6000–D7FFF
C8000–C9FFF D8000–D9FFF
CA000–CBFFF DA000–DBFFF
CC000–CDFFF DC000–DDFFF
CE000–CFFFF DE000–DFFFF