User`s manual

BIOS SETUP
40 MB770 User’s Manual
Write to Read CMD (Twtr)
The default time setting is 1T/2T.
Write Recovery Time
The default time setting is 4T.
DRAM Command Rate
The time to wait after a chip select before activate and read can be started.
RDSAIT Mode
The default time setting is Auto.
RDSAIT Selection
The default time setting is 03.
AGP & P2P Bridge Control
The fields related to AGP & P2P Bridge Control are listed below.
AGP Aperture Size
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 default setting is 64M.
AGP 3.0 Mode
The default setting is 8X.
AGP Driving Value
This decides how multiple memory modules communicate. It will only
make a difference if you have more than one memory module.
AGP Fast Write
This accelerates memory write transactions from the chipset to the AGP
device.
AGP Master 1 WS Write
When enabled, this changes the default from a 2ws to a 1ws which
will increase AGP Writing.
AGP Master 1 WS Read
By default, the AGP busmastering device waits for at least 2 wait states
before it starts a write transaction. When enable, this option sets the delay
to 1 wait state.
AGP 3.0 Calibration cycle
By default, this field is disabled.
VGA Share memory Size
By default, this field is set to 64M.
Direct Frame Buffer
By default, this field is set to Enabled.