Table 2-2 V7865 I/O Address Map - GE V7865 Series Hardware Reference Manual

I/O space. The BIOS initializes and configures all these registers properly;
adjusting these I/O ports directly is not normally necessary.
The assigned and user-available I/O addresses are summarized in the I/O Address
Map, Table 2-2.

Table 2-2 V7865 I/O Address Map

I/O Address Range
$000 - $00F
$010 - $01F
$020 - $021
$022 - $03F
$040 - $043
$044 - $05F
$060 - $064
$065 - $06F
$070 - $071
$072 - $07F
$080 - $08F
$090 - $091
$092
$093 - $09F
$0A0 - $0A1
$0A2 - $0BF
$0C0 - $0DF
$0E0 - $16F
$170 - $177
$178 - $1EF
$1F0 - $1F7
$1F8 - $277
$278 - $27F
$280 - $2E7
$2E8 - $2EE
$2EF - $2F7
$2F8 - $2FE
$2FF - $36F
$370 - $377
$378 - $37F
$380 - $3E7
$3E8 - $3EE
$3F0 - $3F7
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Size In Bytes HW Device
16
16
2
30
4
30
5
11
2
14
16
2
1
11
2
30
32
142
8 ICH7-M
120
8 ICH7-M
128
8 I/O Chip
104
7 UART*
9
7 Super-I/O Chip
113
8 Super-I/O Chip*
8 Super-I/O Chip
108
7 UART*
8 Super-I/O Chip*
PC/AT Function
DMA Controller 1
Reserved
Master Interrupt Controller
Reserved
Programmable Timer
Reserved
Keyboard, Speaker, System Configuration
Reserved
Real-Time Clock
Reserved
DMA Page Registers
Reserved
Alt. Gate A20/Fast Reset Register
Reserved
Slave Interrupt Controller
Reserved
DMA Controller 2
Reserved
Secondary Hard Disk Controller
User I/O
Primary Hard Disk Controller
User I/O
Reserved
Reserved
COM4 Serial I/O*
User I/O
COM2 Serial I/O (16550 Compatible)
Reserved
Secondary Floppy Disk Controller*
Reserved
Reserved
COM3 Serial I/O*
Primary Floppy Disk Controller*
Standard Features 31