I/O Base Address Configuration Register
Table 65 - I/O Base Address Configuration Register Description
LOGICAL
DEVICE
BASE I/O
RANGE
LOGICAL REGISTER
FIXED
NUMBER
DEVICE
INDEX
(NOTE3)
BASE OFFSETS
0x00
FDC
0x60,0x61
[0x100:0x0FF8]
+0 : SRA
+1 : SRB
+2 : DOR
(Note 4)
ON 8 BYTE
BOUNDARIES
+3 : TSR
+4 : MSR/DSR
+5 : FIFO
+7 : DIR/CCR
0x03
Parallel
Port
0x60,0x61
[0x100:0x0FFC]
ON 4 BYTE
+0 : Data|ecpAfifo
+1 : Status
BOUNDARIES
+2 : Control
(EPP Not supported) +3 : EPP Address
or
+4 : EPP Data 0
+5 : EPP Data 1
+6 : EPP Data 2
+7 : EPP Data 3
[0x100:0x0FF8]
ON 8 BYTE
BOUNDARIES
(all modes supported, +400h : cfifo|ecpDfifo|tfifo |cnfgA
EPP is only available +401h : cnfgB
when the base address +402h : ecr
is on an 8-byte
boundary)
0x04
0x05
Serial Port 1 0x60,0x61
[0x100:0x0FF8]
+0 : RB/TB|LSB div
+1 : IER|MSB div
+2 : IIR/FCR
+3 : LCR
+4 : MSR
+5 : LSR
ON 8 BYTE
BOUNDARIES
+6 : MSR
+7 : SCR
Serial Port 2 0x60,0x61
[0x100:0x0FF8]
+0 : RB/TB|LSB div
+1 : IER|MSB div
+2 : IIR/FCR
+3 : LCR
ON 8 BYTE
BOUNDARIES
+4 : MSR
+5 : LSR
+6 : MSR
+7 : SCR
0x07
0x08
KYBD
n/a
n/a
Not Relocatable
Fixed Base Address: +4 : Command/Status Reg.
60,64
+0 : Data Register
AUX I/O
Not Relocatable
n/a
171
SMSC [ SMSC CORPORATION ]
