Video RAM Cacheable: When set to “Enabled”, the Graphics
card’s local memory will be cached for faster execution. The default
setting is “Disable”.
8 Bit I/O Recovery Time: This option sets the delay between back-
to-back 8-bit I/O instructions. The options are 1, 2, 3, 4, 5, 6, 7, 8
Sysclks and NA. The default setting is “1”.
16 Bit I/O Recovery Time: This option sets the delay between back-
to-back 16-bit I/O instructions. The options are 1, 2, 3, 4 Sysclks
and NA. The default setting is “1”.
CPU SPEED: This option sets the CPU speed. There are two major
category of this option. The default setting is “Manual“. The other
options are “200MHz (66.6x3.0)”, “233MHz (66.6x3.5)”, “266MHz
(66.6x4.0)”, 300MHz (66.6x4.5)” and “333MHz (66.6x5.0)”.
When set to “Manual” two more options “CPU Ratio” and “CPU Fre-
quency” will pop up to let user set the CPU core to bus clock ratio
(CPU Ratio) and CPU Bus clock (CPU Frequency) manually.
CPU Ratio: This option sets the CPU Core to Bus Clock Multiplier.
The options are “3”, “3.5”, 4”, “4.5”, “5” and “5.5”.
CPU Frequency: This option sets the CPU Bus Clock. The options
are “66MHz”, “68MHz”, “75MHz” when a 66MHz Bus Clock CPU
is installed.
Memory Hole At 15M-16M: The default setting is “Disable”. Set to
“Enabled” means that when the system memory size is equal to or
greater than 16M bytes, the physical memory address from 15M to
16M will be passed to PCI or ISA and there will be 1MBytes hole in
your system memory. This option is designed for some OS with spe-
cial add-in cards which need 15M-16M memory space.
Passive Release: When set to “Enabled”, CPU-to PCI bus accesses
are allowed during passive release. When set to “Disable”, only PCI
bus-master access to local DRAM is allowed during passive release.
Delayed Transaction: This termination is used by targets that can’t
complete the initial data phase within the requirement of this specifi-
cation. One advantage of a Delay Transaction is that the bus is not
Chapter 3: BIOS Configuration
46 P6F94 User’s Manual
