A-Trend ATC6240V Installation Instructions Manual - page 27
ATC6240V Mainboard Chapter 3 Award BIOS Setup
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Memory Hole A memory block at 15M – 16M is reserved for choice. If “Disabled” is
chosen, it means this memory block is not reserved for special use. If “15M-16M” is
chosen, it means, this memory block is reserved for other devices.
Read Around write to enable this item will optimize DRAM read & write. If a memory
read is addressed to a location where a memory write is held in a buffer content, the
memory read will not be sent to DRAM then.
Concurrent PCI/Host Disabled, the CPU bus will be occupied(BPRI asserted) during
the entire PCI operation. Enabled, the CPU bus is only requested before ADS#
assertion
System BIOS Cacheable Selecting Enabled allows the caching of the system BIOS
ROM at F0000h-FFFFFh, resulting in better system performance. However, if any
program writes to this memory area, a system error may result.
Video RAM Cacheable Selecting Enabled allows the caching of the video RAM,
resulting in better system performance. However, if any program writes to this memory
area, a system error may result.
AGP Aperture Size (MB) Select the size of the AGP aperture. The aperture is a portion
of the PCI memory address range dedicated for graphics memory address space. Host
cycle that hit the aperture range are forwarded to the AGP without any translation. See
www.agpforum.org
for AGP information. The choice 4, 8, 16, 32, 64, 128, 256.
OnChip USB If “Enabled”, “USB Keyboard Support” will be provided for choice.
USB Keyboard Support If “OnChip USB” is enabled, this item will appear for choice.
Auto Detect DIMM/PCI ClK If this item is enabled, the unused DIMM and PCI slot
clock will be disabled. If this item is disabled the unused DIMM and PCI slot will still
get the active clock signal.
Spread Spectrum Modulated Enable / Disable this item, the BIOS will Enable /
Disable the clock generator spread spectrum .
CPU Host/PCI Clock Use this item to set CPU base clock frequency which includes
68/34MHz, 75/37MHz, 83/41MHz, 66/33MHz, 103/34MHz, 112/37MHz,
133/33MHz, 100/33MHz, 117/39MHz, 117/29MHz, 124/31MHz, 129/32MHz,
138/34MHz and Default.