Abit KR7A, User Manual

Page: 51 / 104

Introducing the BIOS
User’s Manual
3-23
"
RxD , TxD Active:
Four options are available: Hi, Hi
)
Hi, Lo
)
Lo, Hi
)
Lo, Lo. The default setting is Hi, Lo . Set IR
transmission/reception polarity as High or Low.
"
IR Transmission Delay:
Two options are available: Disabled and Enabled. The default setting is Enabled . Set IR transmission
delays 4 character-time (40 bit-time) when SIR is changed from RX mode to TX mode.
"
IR Function Duplex:
Two options are available: Full or Half. The default setting is Half .
Select the value required by the IR device connected to the IR port. Full-duplex mode permits
simultaneous two-direction transmission. Half-duplex mode permits transmission in only one
direction at a time.
"
Use IR Pins:
Two options are available: RxD2, TxD2 and IR-Rx2Tx2. The default setting is IR-Rx2Tx2 . If you
choose RxD2, TxD2 , your motherboard must support a COM port IR KIT connection. Otherwise, you
can only choose the IR-Rx2Tx2 to use the IR header on your motherboard to connect your IR KIT.
Please use the default setting.
Note
The setting for item “RxD, TxD Active”, also called “TX, RX inverting”, allows you to determine
the activity of RxD and TxD. We set it to “Hi, Lo”. If your motherboard BIOS uses ‘No’ and
‘Yes’ to represent this item, you should set it to the same setting as the KR7A/KR7A-RAID. This
means that you should set it to “No, Yes” in order to match the transfer and receiving speed. If
you fail to do so, you will not get an IR connection between the KR7A/KR7A-RAID and the
other computer.
Onboard Parallel Port:
Four options are available: Disabled
)
378/IRQ7
)
278/IRQ5
)
3BC/IRQ7. The default setting is
378/IRQ7. Select a logical LPT port name and matching address for the physical parallel (printer) port.
"
Parallel Port Type:
Four options are available: SPP
)
EPP
)
ECP
)
ECP+EPP. Default is SPP mode. Select an
operating mode for the onboard parallel (printer) port. SPP (Standard Parallel Port), EPP (Extended
Parallel Port), ECP (Extended Capabilities Port) or ECP plus EPP.
Select SPP unless you are certain your hardware and software supports both EPP or ECP mode.
According to your selection, the following items will appear.
"
EPP Type Select:
Two options are available: EPP1.9
)
EPP1.7. The default setting is EPP1.7 . When the mode selected
for the parallel port mode is EPP, the two EPP mode options are available.
"
ECP Mode Use DMA:
Two options are available: 1
)
3. The default setting is 3. When the mode selected for the onboard
parallel port is ECP or ECP+EPP, the DMA channel selected can be 1 (Channel 1) or 3 (Channel 3).