Biostar M7TDB User Manual page 52

Chapter 2 BIOS Setup
Video BIOS Cacheable
Select Enabled allows caching of the video BIOS, resulting in better
system performance. However, if any program writes to this memory
area, a system error may result.
The Choices: Disabled (default),Enabled.
Video RAM Cacheable
Enabling this option allows caching of the video RAM, resulting in
better system performance. However, if any program writes to this
memory area, a system error may result.
The Choices: Disabled (default), Enabled.
Memory Hole At 15M-16M
You can reserve this area of system memory for ISA adapter ROM.
When this area is reserved it cannot be cached. The user information of
peripherals that need to use this area of system memory usually
discusses their memory requirements.
The Choices: Disabled (default).
Delayed Transaction
The chipset has an embedded 32-bit posted write buffer to support
delay transactions cycles. Select Enabled to support compliance with
PCI specification version 2.1.
The Choices: Enabled (default), disabled.
AGP Aperture Size (MB)
Select the size of the Accelerated Graphics Port (AGP) aperture. The
aperture is a portion of the PCI memory address range dedicated for
graphics memory address space. Host cycles that hit the aperture range
are forwarded to the AGP without any translation.
The Choices: 4M, 8M, 16M, 32M, 64M (default), 128M, 256M.
2-15