Gateway 7400 System Manual (PDF Version) - Page 143

System I/O addresses

Page 143 highlights

System I/O addresses The following table shows the location in I/O space of all directly I/O-accessible registers. Address 0000h - 000Fh 0010h - 001Fh 0020h - 0021h 0022h - 0023h 0024h - 0025h 0026h - 0027h 0028h - 0029h 002Ah - 002Bh 002Ch - 002Dh 002Eh - 002Fh 0030h - 0031h 0032h - 0033h 0034h - 0035h 0036h - 0037h 0038h - 0039h 003Ah - 003Bh 003Ch - 003Dh 003Eh - 003Fh 0040h - 0043h 0044h - 004Fh 0050h - 0053h 0054h - 005Fh 0060h, 0064h 0061h 0063h 0065h 0067h Resource DMA Controller 1 DMA Controller 1 Interrupt Controller 1 Interrupt Controller 1 Interrupt Controller 1 Interrupt Controller 1 Super I/O Index and Data Ports Interrupt Controller 1 Interrupt Controller 1 Interrupt Controller 1 Interrupt Controller 1 Programmable Timers Programmable Timers Keyboard Controller NMI Status and Control Register NMI Status and Control Register NMI Status and Control Register NMI Status and Control Register System Specifications 135

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156

System Specifications
135
System I/O addresses
The following table shows the location in I/O space of all directly
I/O-accessible registers.
Address
Resource
0000h - 000Fh
DMA Controller 1
0010h - 001Fh
DMA Controller 1
0020h - 0021h
Interrupt Controller 1
0022h - 0023h
0024h - 0025h
Interrupt Controller 1
0026h - 0027h
0028h - 0029h
Interrupt Controller 1
002Ah - 002Bh
002Ch - 002Dh
Interrupt Controller 1
002Eh - 002Fh
Super I/O Index and Data Ports
0030h - 0031h
Interrupt Controller 1
0032h - 0033h
0034h - 0035h
Interrupt Controller 1
0036h - 0037h
0038h - 0039h
Interrupt Controller 1
003Ah - 003Bh
003Ch - 003Dh
Interrupt Controller 1
003Eh - 003Fh
0040h - 0043h
Programmable Timers
0044h - 004Fh
0050h - 0053h
Programmable Timers
0054h - 005Fh
0060h, 0064h
Keyboard Controller
0061h
NMI Status and Control Register
0063h
NMI Status and Control Register
0065h
NMI Status and Control Register
0067h
NMI Status and Control Register