System I/O Address Map - Epson ActionTower 7500 User Manual

System I/O Address Map

Hex address
000 - 01F
020 - 03F
022 - 024
040 - 05F
060 - 06F
070 - 07F
080 - 09F
0A0 - 0BF
0C0 - 0DF
0F0
OF1
OF8 OFF
1F0 - 1F8
1E0 - 1E7
200 - 207
278 - 27F
2B0 - 2DF
2E1
2E2, 2E3
2F8 - 2FF
300 - 31F
360 - 363
368 - 36B
378 - 37F
380 - 38F
390 - 393
3A0 - 3AF
3B0 - 3BF
3C0 - 3CF
3D0 - 3DF
3F0 - 3F7
3F8 - 3FF
Assigned device
DMA controller 1, 8237
Interrupt controller 1, 8259
Reserved
Timer, 8254
Keyboard controller,
Real-time clock NMI (non-maskable interrupt)
DMA page register, 74LS612
Interrupt controller 2, 8259
DMA controller 2, 8237
Clear math coprocessor
Reset math coprocessor
Math coprocessor
Primary hard disk interface
Secondary hard disk interface
Game I/O
Parallel printer port 2
Alternate enhanced graphics adapter
GPIB (adapter 0)
Data acquisition (adapter 0)
Serial port 2
Prototype card
Available
Available
Parallel printer port 1
Available
Available
Available
Available
Available
Available
Diskette drive controller
Serial port 1
8242PE
Specifications A-13