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28 VMIVME-7805/VME-7805RC Hardware Reference Manual
Table 2-2 VMIVME-7805/VME-7805RC I/O Address Map
I/O Address Range
Size In Bytes HW Device
PC/AT Function
$000 - $00F
16
DMA Controller 1
$010 - $01F
16
Reserved
$020 - $021
2
Master Interrupt Controller
$022 - $03F
30
Reserved
$040 - $043
4
Programmable Timer
$044 - $05F
30
Reserved
$060 - $064
5
Keyboard, Speaker, System Configuration
$065 - $06F
11
Reserved
$070 - $071
2
Real-Time Clock
$072 - $07F
14
Reserved
$080 - $08F
16
DMA Page Registers
$090 - $091
2
Reserved
$092
1
Alt. Gate A20/Fast Reset Register
$093 - $09F
11
Reserved
$0A0 - $0A1
2
Slave Interrupt Controller
$0A2 - $0BF
30
Reserved
$0C0 - $0DF
32
DMA Controller 2
$0E0 - $16F
142
Reserved
$170 - $177
8
ICH4-M
Secondary Hard Disk Controller
$178 - $1EF
120
User I/O
$1F0 - $1F7
8
ICH4-M
Primary Hard Disk Controller
$1F8 - $277
128
User I/O
$278 - $27F
8
I/O Chip
Reserved
$280 - $2E7
104
Reserved
$2E8 - $2EE
7
UART*
COM4 Serial I/O*
$2EF - $2F7
9
User I/O
$2F8 - $2FE
7
Super-I/O Chip
COM2 Serial I/O (16550 Compatible)
$2FF - $36F
113
Reserved
$370 - $377
8
Super-I/O Chip
Secondary Floppy Disk Controller
$378 - $37F
8
Super-I/O Chip
Reserved
$380 - $3E7
108
Reserved
$3E8 - $3EE
7
UART*
COM3 Serial I/O*
$3F0 - $3F7
8
Super-I/O Chip
Primary Floppy Disk Controller
$3F8 - $3FE
7
Super-I/O Chip
COM1 Serial I/O (16550 Compatible)
$3FF - $4FF
256
Reserved
$500 - CFF
2048
Reserved
* While these I/O ports are reserved for the listed functions, they are not implemented on the VMIVME-7805/
VME-7805RC. They are listed here to make the user aware of the standard PC usage of these ports.