Epson Endeavor 486I, User Manual

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System l/O Address Map
Hex address Assigned device
0 0 0 . O l F DMA controller 1, 8237
0 2 0 0 3 F Interrupt controller 1, 8259
0 2 2 0 2 4 Reserved
0 4 0 0 5 F Timer, 8254
0 6 0 0 6 F Keyboard controller, 8242PE
0 7 0 0 7 F Real-time clock NMI (non-maskable interrupt)
0 8 0 . 0 9 F DMA page register, 74LS612
OAO OBF Interrupt controller 2, 8259
OCO-ODF DMA controller 2, 8237
OF0 Clear math coprocessor
OF1 Reset math coprocessor
0 F 8 - O F F Math coprocessor
1 F 0 - 1 F 8 Primary hard disk interface
1 E 0 - 1 E 7 Secondary hard disk interface
2 0 0 - 2 0 7 Game I/O
2 7 8 - 2 7 F Parallel printer port 2
2 8 0 - 2 D F Alternate enhanced graphics adapter
2E1 GPIB (adapter 0)
2E2, 2E3 Data acquisition (adapter 0)
2 F 8 - 2 F F Serial port 2
3 0 0 . 3 1 F Prototype card
3 6 0 - 3 6 3 Available
3 6 8 - 3 6 B Available
3 7 8 - 3 7 F Parallel printer port 1
3 8 0 - 3 8 F Available
3 9 0 - 3 9 3 Available
3 A 0 - 3 A F Available
3 8 0 - 3 B F Available
3 C 0 - 3 C F Available
3 D 0 - 3 D F Available
3 F 0 - 3 F 7 Diskette drive controller
3 F 8 - 3 F F Serial port 1
Specifications A-13