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6-3 Shadow RAM
For higher performance, the mainboard has two shadow RAM func-
tions. Shadow RAM is one of the advanced features of the mainboard.
Your BIOS or diskette will support the following:
• A 84KB DRAM space allocated for system BIOS shadow
RAM
• A 84KB DRAM space allocated for video BIOS shadow RAM
BIOS and video addresses are allocated for shadow RAM. Both
sections are 84KB in size. Refer to the table below for more informa-
tion.
6MB Byte System BIOS
EOOOOH
DOOOOH
COOOOH
64KB Byte Video BIOS
Figure 6-9: Shadow RAM
A reserved 128K DRAM space is allocated for shadow RAM. You can
also use it for another purpose if these functions are disabled. Refer to
the
Shadow RAM
Control Port table on the next page for more
information.
Chapter 6: Appendix
11
Summary of Contents for Apex 386/40
Page 1: ......
Page 13: ...Chapter 1 System Overview ...
Page 36: ...Chapter 2 Setting Up Your System ...
Page 54: ...Chapter 3 Operating Your System ...
Page 74: ...Capter 4 Keyboard ...
Page 84: ...Chapter 5 Troubleshooting ...
Page 93: ...Chapter 6 Appendix ...
Page 109: ...Chapter 7 Glossary ...