8-4
PG 720 P Programming Device
C79000-G7076-C721-02
Table 8-2
I/O Address Assignments, continued
from
Possible Alternative Function
Basic Function
byte
to
00A0
00A1
2
82C558E ––> Interrupt controller 2
Control Register
00A2
00BF
30
Reserved
00C0
00DF
32
82C558E ––> DMA Controller 2
Control Register (DMA 4, 5, 6, 7)
00E0
1
Configuration register for
MPI,COM,VGA,Progas,Trackball,etc.
00E1
00EF
15
Unoccupied
00F0
00F1
2
Numeric Processor
00F2
00F7
6
Unoccupied
00F8
00FF
8
Numeric Processor
0100
010F
16
Unoccupied
0110
016F
96
Unoccupied
0170
0177
8
Secondary IDE channel (free)
0178
01EF
120
Unoccupied
01F0
01F7
8
Primary on-board IDE channel
Can be switched off in Setup; then free
01F8
01FF
8
Unoccupied
0200
020F
16
Unoccupied
0210
0277
104
Unoccupied
0278
027B
4
LPT 2 ( Unoccupied )
027C
02E7
108
Unoccupied
02E8
02EF
8
COM 4 ( Unoccupied )
02F0
02F7
8
Unoccupied
02F8
02FF
8
COM2 ( / IRDA )
Can be switched off in Setup; then free
0300
031F
32
Programming interface module
Can be switched off in Setup; then free
0320
033F
32
Unoccupied
SCSI adapter for example,
AHA1542C
0340
035F
32
Unoccupied
0360
036F
16
Unoccupied
0370
0375
6
Floppy 2
Unoccupied
0376
1
Second IDE Command Register
Unoccupied
0377
1
Second IDE Status Register
Unoccupied
0378
037F
8
LPT 1
Can be switched off in Setup; then free
0380
038F
16
Unoccupied
0390
039F
16
Unoccupied
03A0
03AF
16
Unoccupied
03B0
03BB
12
SW monitor interface module or EGA
/ VGA
03BC
03BF
4
LPT x ( Unoccupied )
03C0
03CF
16
VGA control register
03D0
03DF
16
CGA / VGA control register
03E0
03E1
2
PCMCIA controller
Can be switched off in Setup; then free
03E2
03E7
6
Unoccupied
03E8
03EF
8
COM 3 ( Unoccupied )
Hardware Information