American Megatrends Super Voyager LPX, Руководство пользователя

Страница: 164 / 200

Chapter 6 AMIBIOS Setup
158
Advanced Setup,
Continued
Non-Cacheable Block Base
This option specifies the starting address of the Non-Cacheable area of
memory. The settings are
64 KB, 128 KB, 256 KB, 512 KB 1 MB, 2 MB,
4 MB, or 8 MB. The Optimal and Fail-Safe default settings are 64 KB.
8/16 Bit I/O Recovery
This option specifies the length of the delay that is added to the CPU
cycle after an 8-bit or 16-bit I/O operation. The length of the delay is
related to the CPU type and frequency. The recommended settings are:
Setting CPU Type and Frequency
4/2 CLK 25 or 33 MHz 486
4/2 CLK 50 MHz 486
7/3 CLK 50 MHz 486DX2
11/5 CLK 66 MHz 486DX2
11/5 CLK 75 MHz 486DX4
11/5 CLK 100 MHz 486DX4
16/8 CLK Reserved
The Optimal default setting is
4/2 CLK.
The Fail-Safe default setting is
16/8 CLK.