ECS K7VZA Manual page 58

Primary/Secondary Master/Slave UDMA
Each channel supports a master device and a slave device. This
motherboard supports UltraDMA. UltraDMA technology provides faster
access to IDE devices.
If you install a device that supports UltraDMA, change the appropriate
item on this list to Auto. You may have to install the UltraDMA driver
supplied with this motherboard in order to use an UltraDMA device.
Init Display First
Use this item to define if your graphics adapter is installed in one of the
PCI slots or select Onboard if you have a graphics system integrated on
the mainboard.
IDE HDD Block Mode
Block mode transfers can improve the access to IDE devices. Enable
this item if your IDE devices support block mode transfers.
Onboard FDD Controller
This option enables the onboard floppy disk drive controller.
Onboard Serial Port 1, 2
This option is used to assign the I/O address for the onboard serial
ports.
UART2 Mode Select
This field is available if the Onboard Serial Port 2 field is set to any
option but Disabled. UART Mode Select enables you to select the
infrared communication protocol —Standard (default), HPSIR, or ASKIR.
HPSIR is Hewlett Packard's infrared communication protocol with a
maximum baud rate up to 115.2 Kbps. ASKIR is Sharp's infrared
communication protocol with a maximum baud rate up to 57.6 Kbps.
IR Function Du plex
This field is available when UART 2 Mode is set to either ASKIR or
HPSIR. This item enables you to determine the infrared (IR) function of
the onboard infrared chip. Full-duplex means that you can transmit and
send information simultaneously. Half-duplex is the transmission of data
in both directions, but only one direction at a time.
Default: Auto
Default: PCI Slot
Default: Enabled
Default: Enabled
Default: Auto
Default: Standard
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Default: Half