AOpen AP5C, Руководство пользователя

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AMI BIOS
User’s Guide 3-19
RAS Precharge *
This function lets you set the RAS precharge time. The RAS
Precharge time refers to the period it takes for the core logic to
charge the RAS signal before issuance. Some DRAMs require
shorter time to charge RAS signals.
The selections for this parameter are 3T and 4T. The default setting
is
3T
.
Speed
This DRAM control parameter lets you set the DRAM speed. The
speed settings are 60 ns and 70 ns. The default setting is 70 ns .
Memory Hole
This option lets you set the system memory area that you need to
avoid memory conflicts. The settings are 512 ~ 640 K, 15 ~ 16 M and
Disabled.
ISA Control
8-bit I/O Recovery Time
This parameter allows you to set the response time of the 8-bit I/O
connected to your system. The range is from 1~7 SYSCLK. The
default setting is
4 SYSCLK.
*
This parameter appears only if the Chipset Setup Mode parameter in the Advanced
Setup screen is set to
Engineer .