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TT-75.001
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1994-03-08
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TECH TIP NO.: TT75.001
PRODUCT: Series 75 Pentium VLB ISA Motherboard
BOARD REVISION: All: B2 and C1
DATE: 3/3/94
RELEASED BY: Documentation Control
SUBJECT: AMIBIOS Setup Option Constraints for the Series 75
Users of all revisions of the series 75 should be aware of the following
constraints in using the AMIBIOS Setup Program.
1. ADVANCED CMOS SETUP
The 0E0000- 0EFFFF memory address is NOT available for adapter cards . This is
used by the system flash BIOS. The option for Adaptor ROM Shadow E000, 64K
should be DISABLED.
2. ADVANCED CHIPSET SETUP
Do not use the WR-Thru setting for the DRAM Region B Control Mode option. The
BIOS default is DISABLED. In this case the DRAM will be continuous. The
other available setting is HOLE.
The HOLE setting can be used to define a hole in the board DRAM region. The
hole starting address and size can be defined using the settings in the DRAM
Region B Size option and the DRAM Region Base Address option. This address
"HOLE" will be reserved on the VL/ISA bus for adapter cards to use.
If the HOLE setting is used, make sure your Operating System is configured to
recognize the hole, and still use any DRAM present beyond the hole.