Power Management Setup - Acer 370LXB User Manual

3.4.5 System BIOS Cacheable
Allows the system BIOS to be cached for faster system performance.
3.4.6 Video BIOS Cacheable
Allows the video BIOS to be cached for faster video performance.
3.4.7 Video RAM Cacheable
This item lets you cache Video RAM A000 and B000.
3.4.8 8 Bit I/O Recovery Time
This option specifies the length of a delay inserted between consecutive 8-bit I/O operations.
3.4.9 16 Bit I/O Recovery Time
This option specifies the length of a delay inserted between consecutive 16-bit I/O operations.
3.4.10 Memory Hole At 15M-16M
Enabling this feature reserves 15MB to 16MB memory address space to ISA expansion cards that specifically require this
setting. This makes the memory from 15MB and up unavailable to the system. Expansion cards can only access memory up to
16MB.
3.4.11 Passive Release
This function is used to meet the latency of the ISA bus master. Try to enable or disable it, if you have ISA card compatibility
problem.
3.4.12 Delayed Transaction
This function is used to meet the latency of PCI cycles to from ISA bus. Try to enable or disable it, if you have ISA card
compatibility problem.
3.4.13 AGP Aperture Size (MB)
Choose 4, 8, 16, 32, 64, 128, 256MB. Memory-mapped, graphics data structures can reside in the Graphics Aperture.
3.4.14 SDRAM RAS-to-CAS Delay
These are timing of SDRAM CAS Latency and RAS to CAS Delay, Calculated by clocks. They are important parameters
affects SDRAM Performance.
3.4.15 SDRAM RAS Precharge Time
The RAS precharge means the timing to inactive RAS and the timing for DRAM to do precharge before next RAS can be
issued.
3.4.16 CPU Host Clock
Default is 66 MHz. Choose 66, 75, 83MHz for the external frequency of your CPU.
The 75, 83MHz frequency setting are optional.
The frequency mapping table of the elements:
Ext. frequency AGP
66MHz 66MHz
75MHz 75MHz
83MHz 83MHz
Notice:The 75, 83 frequency setting are over specification.
Warning: Over specification operations are not recommended.

3.5 Power Management Setup

Power management decreases power usage under the pre-defined standby time range.
PCI ISA
33MHz 8.33MHz
37.5MHz 8.33MHz
41.6MHz 8.33MHz
Figure 3-5. POWER MANAGEMENT SETUP SCREEN
ROM PCI / ISA BIOS (XXXXXXXX)
POWER MANAGEMENT SETUP
AWARD SOFTWARE, INC.
DIMM
66MHz
75MHz
83MHz