Lenovo NetVista A22 User guide for NetVista 2254, 2256, 2257, 6336, 6337, 6339 - Page 76

Address range hex, Size bytes, Description, General I/O locations

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Table 2. I/O address map (continued) Address range (hex) Size (bytes) 0072, bits 6:0 6 bits 0073 1 0080 1 008F 1 0080 - 008F 16 0090 - 0091 15 0092 1 0093 - 009F 15 00A0 - 00A1 2 00A2 - 00BF 30 00C0 - 00DF 31 00E0 - 00EF 16 00F0 1 00F1 - 016F 127 0170 - 0177 8 01F0 - 01F7 8 0200 - 0207 8 0220 - 0227 8 0228 - 0277 80 0278 - 027F 8 0280 - 02E7 102 02E8 - 02EF 8 02F8 - 02FF 8 0338 - 033F 8 0340 - 036F 48 0370 - 0371 2 0378 - 037F 8 0380 - 03B3 52 03B4 - 03B7 4 03BA 1 03BC - 03BE 16 03C0 - 03CF 52 03D4 - 03D7 16 03DA 1 03D0 - 03DF 11 03E0 - 03E7 8 03E8 - 03EF 8 03F0 - 03F5 6 03F6 1 03F7 (Write) 1 Description RTC address RTC data POST checkpoint register during POST only Refresh page register DMA page registers General I/O locations, available to PCI bus PS/2 keyboard controller registers General I/O locations Interrupt controller 2 APM control DMA 2 General I/O locations, available to PCI bus Coprocessor error register General I/O locations, available to PCI bus Secondary IDE channel Primary IDE channel MIDI/joystick port Serial port 3 or 4 General I/O locations, available to PCI bus LPT3 Available Serial port 3 or 4 COM2 Serial port 3 or 4 Available IDE channel 1 command LPT2 Available Video Video LPT1 Video Video Video Available Available COM3 or COM4 Diskette channel 1 Primary IDE channel command port Diskette channel 1 command 64 User Guide

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Table 2. I/O address map (continued)
Address range (hex)
Size (bytes)
Description
0072, bits 6:0
6 bits
RTC address
0073
1
RTC data
0080
1
POST checkpoint register during POST only
008F
1
Refresh page register
0080
–
008F
16
DMA page registers
0090
–
0091
15
General I/O locations, available to PCI bus
0092
1
PS/2 keyboard controller registers
0093
–
009F
15
General I/O locations
00A0
–
00A1
2
Interrupt controller 2
00A2
–
00BF
30
APM control
00C0
–
00DF
31
DMA 2
00E0
–
00EF
16
General I/O locations, available to PCI bus
00F0
1
Coprocessor error register
00F1
–
016F
127
General I/O locations, available to PCI bus
0170
–
0177
8
Secondary IDE channel
01F0
–
01F7
8
Primary IDE channel
0200
–
0207
8
MIDI/joystick port
0220
–
0227
8
Serial port 3 or 4
0228
–
0277
80
General I/O locations, available to PCI bus
0278
–
027F
8
LPT3
0280
–
02E7
102
Available
02E8
–
02EF
8
Serial port 3 or 4
02F8
–
02FF
8
COM2
0338
–
033F
8
Serial port 3 or 4
0340
–
036F
48
Available
0370
–
0371
2
IDE channel 1 command
0378
–
037F
8
LPT2
0380
–
03B3
52
Available
03B4
–
03B7
4
Video
03BA
1
Video
03BC
–
03BE
16
LPT1
03C0
–
03CF
52
Video
03D4
–
03D7
16
Video
03DA
1
Video
03D0
–
03DF
11
Available
03E0
–
03E7
8
Available
03E8
–
03EF
8
COM3 or COM4
03F0
–
03F5
6
Diskette channel 1
03F6
1
Primary IDE channel command port
03F7 (Write)
1
Diskette channel 1 command
64
User Guide