Remapcfg; D.51 Remapcfg - Intel 386 User Manual

D.51 REMAPCFG

Address Configuration Register

REMAPCFG

15
ESE —
7
— S1R
Bit Bit
Number Mnemonic
15 ESE
14–7 —
6 S1R
5 S0R
4 ISR
3 IMR
2 DR
1 —
0 TR
— —
S0R ISR
0 = Disables expanded I/O space
1 = Enables expanded I/O space
Reserved.
0 = Makes serial channel 1 (COM2) accessible in both DOS I/O space
and expanded I/O space
1 = Remaps serial channel 1 (COM2) address into expanded I/O space
0 = Makes serial channel 0 (COM1) accessible in both DOS I/O space
and expanded I/O space
1 = Remaps serial channel 0 (COM1) address into expanded I/O space
0 = Makes the slave 82C59A interrupt controller accessible in both DOS
I/O space and expanded I/O space
1 = Remaps slave 82C59A interrupt controller address into expanded
I/O space
0 = Makes the master 82C59A interrupt controller accessible in both
DOS I/O space and expanded I/O space
1 = Remaps master 82C59A interrupt controller address into expanded
I/O space
0 = Makes the DMA address accessible in both DOS I/O space and
expanded I/O space
1 = Remaps DMA address into expanded I/O space
Reserved.
0 = Makes the timer control unit accessible in both DOS I/O space and
expanded I/O space
1 = Remaps timer control unit address into expanded I/O space
SYSTEM REGISTER QUICK REFERENCE
Expanded Addr: 0022H
PC/AT Address: 0022H
Reset State: 0000H
— —
IMR DR
Function
8
— —
0
— TR
D-53