
Chapter 3
3-20
UART Mode Select
The item allows you to determine which Infra Red (IR) function of the
onboard I/O chip. Settings are Normal(default), IrDA and ASKIR.
RxD, TxD Active
The item determines the active of RxD, TxD. Settings are Hi, Lo (default),
Hi, Hi, Lo, Hi, Lo, Lo.
IR Transmission Delay
This enables or disables IR transmission delay feature. Settings are Enabled
and Disabled. Default is Enabled.
UR2 Duplex Mode
This specifies a duplex value for the IR device connected to the IR
connector. Full-Duplex mode permits simultaneous two-direction
transmission. Half-Duplex mode permits transmission in one direction only
at a time. Settings are Half and Full. Default is Half .
!!!!DISABLED X DISABLED X
!!X X COM3 4 COM4 3
XX!! COM1 4 COM2 3
! XX! COM2 3 COM3 4
X !!X COM1 4 COM4 3
!!!X C OM4 3 DISABLED X
!!X ! COM3 4 DISABLED X
! X !! CO M2 3 DISABLED X
X !!!CO M1 4 DISABLED X
X X X X COM1 4 COM2 3
! X X X COM2 3 COM3 4
X ! X X COM1 4 COM3 4
XX! X COM1 4 COM2 3
XXX! COM1 4 COM2 3
If the ISA add-on card has Onboard Serial port to be set at
COM1
(I/O:3F8H)
COM2
(I/O:3F8H)
COM3
(I/O:3E8H)
COM4
(I/O:2E8H)
PORT1
PORT2
IRQ
ASSIGNED
IRQ
ASSIGNED
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