User`s guide

BIOS Configuration • 45
8 Bit I/O Recovery Time
The recovery time is the length of time, which the system delays after the
completion of an input/output request. The CPU clocks measure it. This
delay takes place because the CPU is operating much faster than the
input/output bus that the CPU must be delayed to allow for the completion
of the I/O.
This option specifies the length of the delay (in sysclks) inserted between
consecutive 8-bit I/O operations. The settings are 1, 2, 3, 4, 5, 6, 7, or 8.
The default setting is NA.
16 Bit I/O Recovery Time
This option specifies the length of the delay (in sysclks) inserted between
consecutive 16-bit I/O operations. The settings are 1, 2, 3, 4.The default
setting is NA.
Memory Hole at 15MB - 16MB
In order to improve performance, certain space in memory can be reserved
for ISA boards. This field allows you to reserve 15MB to 16MB memory
address space to ISA expansion boards. This makes memory from 15MB
and up unavailable to the system. Expansion boards can only access
memory up to 16MB. By default, this field is set to Disabled.
Auto Detect DIMM/PCI Clk
When enabled, the system automatically shuts off clocks of unused
DIMM/PCI slots. The default setting is Disabled.
Power-Supply Type
AT<Default>
This power supply is reserved for traditional
system that uses the AT power supply.
ATX
The ATX power supply is used for more
functions about the system’s power
management. Some wake up event function is
provided by this type power supply.