Lenovo NetVista Technical information manual for NetVista 6269, 6568, 6569, 65 - Page 56

Table 33. I/O address map, General I/O locations

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Table 33. I/O address map Address (hex) Size (bytes) 0070, bits 6:0 0071 6 bits 1 byte 0072 1 bit 0072, bits 6:0 6 bits 0073 0080 1 byte 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 Description Real-time clock, address Real-time clock, data Enable NMI 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 46 NetVista™ Technical Information Manual

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46
NetVista™ Technical Information Manual
0070, bits 6:0
6 bits
Real-time clock, address
0071
1 byte
Real-time clock, data
0072
1 bit
Enable NMI
0072, bits 6:0
6 bits
RTC address
0073
1 byte
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
Table 33. I/O address map
Address (hex)
Size (bytes)
Description