Acrosser AR-B1661 - Manual (Page 29)

AR-B1661 Manual
27
Video RAM Cacheable
Selecting Enabled allows caching of the video BIOS ROM at C0000h to C7FFFh, resulting in better video
performance. However, if any program writes to this memory area, a memory access error may result.
8 Bit I/O Recovery Time
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 3.
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, 5, 6, 7, or 8. The default setting is 2.
Memory Hole at 15MB - 16MB
In order to improve performance, certain space in memory can be reserved for ISA cards. This field allows you to
reserve 15MB to 16MB of memory address space to ISA expansion cards. This makes memory from 15MB and
up unavailable to the system. Expansion cards can only access memory up to 16MB. By default, this field is set
to Disabled.
Passive Release
When enabled, CPU to PCI bus accesses is allowed during passive release. Otherwise, the arbiter only accepts
another PCI master access to local DRAM.
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 default setting is Disabled.
AGP Aperture Size (MB)
The field sets aperture size of the graphics. 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 options available are 4M, 8M, 16M, 32M, 64M, 128M and 256M. The default setting
is 64M.
Power-Supply Type
To select your power supply Type AT/FFATX.