AMD Athlon 64 User Manual page 38

BIOS
CAS# Latency (Tcl)
Enables you to select the CAS latency time. The value is set at the factory depending
on the DRAM installed. Do not change the values in this field unless you change
specifications of the installed DRAM and DRAM clock from DRAM Timing
Selectable.
Options: Auto, 2.0, 2.5, 3.0.
RAS# to CAS# dealy (Trcd)
This item sets the timing parameters for the system memory such as the CAS (Column
Address Strobe) and RAS (Row Address Strobe).
Options: Auto, 2 ~ 7.
Min RAS# active time (Tras)
This item specifies the number of clock cycles needed after a bank active command
before a precharge can occur (sets the minimum RAS pulse width.).
Options: Auto, 5 ~ 15.
Row precharge Time (Trp)
This item refers to the number of cycles required to return data to its original
location to close the bank or the number of cycles required to page memory before
the next bank activate command can be issued.
Options: Auto, 2 ~ 6.
AGP Aperture Size (MB)
This item defines the size of the aperture if you use an AGP graphics adapter. It
refers to a section of the PCI memory address range used for graphics memory.
Options: 32, 64, 128, 256, 512 MB.
AGP 2.0 Speed
This item allows you to select the AGP Speed.
Options: Auto, 1x, 1x2x, 1x2x4x.
AGP Fast Write
This item allows you to use Fast Write transfer for CPU write to graphics adapter's
memory.
Options: Auto, Disabled.
AGP Sideband Address
Options: Auto, Disabled.
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