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AST RESEARCH TECHNICAL BULLETIN TB-0145 11-25-85
RAMPAGE CONFLICT WITH IBM PC I
An incompatibility exists between the AST Rampage! product and
the IBM PC-1 (with 64K motherboard). The problem has been
isolated to those machines with the early ROM BIOS, which is
dated 1981.
The user will get a "PARITY CHECK 2" error as the machine is
booting. The message appears on the screen as the REMM.SYS file
is executing.
One solution to this problem is the use of the "/X" option when
configuring REMM.SYS file. The exact command should read as
follows:
DEVICE=REMM.SYS /X=8800-A000
This will keep REMM from "looking at" RAM between the top of
conventional memory (544K on the early PC's) and the 640K
boundary, where REMM would normally start checking.
Another solution to this problem is to obtain from IBM the ROM
BIOS update kit. The "/X" part of the above command should not
be used.