User Guide

AMI BIOS Utility
3-13
430HX Global Features
This option lets you enable or disable the 430HX chip features. To optimize
system performance, set this parameter to Enabled. Select Disabled to
disregard the option.
The default setting is Disabled.
Memory Hole
This option lets you reserve system memory area for ISA cards. The settings
are 512~640K, 15~16M, and Disabled.
8-bit I/O Recovery Time (Sysclk)
This parameter allows you to set the response time of the 8-bit I/O devices
connected to your system. The settings range from 1-7 SYSCLK and
Disabled.
16-bit I/O Recovery Time (Sysclk)
This parameter allows you to set the response time of the 16-bit I/O devices
connected to your system. The settings range from 1-4 SYSCLK and
Disabled.
DRAM Timing
The selections for this parameter are 60 ns, 70 ns, and Manual. If
you select either 60 ns or 70 ns, the DRAM Timing subparameters
become non-configurable since BIOS automatically sets the values. Select
Manual if you want to specify your own parameter settings.
DRAM REFRESH RATE
This option lets you specify the frequency at which the chipset refreshes the
DRAM to avoid data lost. The selections are 50 MHz, 60 MHz, and
66 MHz.
ISA CLOCK DIVISOR
This option specifies the ISA clock frequency. The selections are
PCICLK/4 and PCICLK/3.