Dma Assignments; Hardware Interrupts; System I/O Address Map - Epson ActionPC 8600 Product Information Manual


Model number Single drive
Conner CFS1275A C/D jumpered
Conner CFS850A C/D jumpered
Conner CFS635A C/D jumpered
Conner CFS541A C/D jumpered
NEC D3747 SW1 on,
SW2–SW4 off
NEC D3745 SW1 on,
SW2–SW4 off
Seagate ST31640A No jumpers
Seagate ST51270A No jumpers
Seagate ST3630A No jumpers

DMA Assignments

Level Assigned device
DMA0 Reserved
DMA1 Available
DMA2 Diskette drive controller
DMA3 Available
DMA4
DMA5 Spare
DMA6 Spare
DMA7 Spare

Hardware Interrupts

IRQ no. Function
IRQ0 Internal timer
IRQ1 Keyboard
IRQ2 Cascade to IRQ9
IRQ3 Serial port 2
IRQ4 Serial port 1
IRQ5 LPT2
IRQ6 Diskette drive controller
IRQ7 Parallel port 1
IRQ8 Real-time clock
IRQ9 Cascaded from IRQ2
IRQ10 Available
IRQ11 Available
IRQ12 PS/2 mouse
IRQ13 Math coprocessor
IRQ14 Primary IDE controller
IRQ15 Secondary IDE controller
Master drive Slave drive
C/D jumpered No jumpers
C/D jumpered No jumpers
C/D jumpered No jumpers
C/D jumpered No jumpers
SW1 on, SW1–SW4 off
SW2–SW4 off
SW1 on, SW1–SW4 off
SW2–SW4 off
3-4 jumpered 1-2 jumpered
3-4 jumpered 1-2 jumpered
No jumpers 7-8 jumpered
EPSON ActionPC and ActionTower 8600

System I/O Address Map

Hex address Assigned device
000 - 01F DMA controller 1, 8237
020 - 03F Interrupt controller 1, 8259
022 - 024 Reserved
040 - 05F Timer, 8254
060 - 06F Keyboard controller, 8242PE
070 - 07F Real-time clock NMI (non-maskable interrupt)
080 - 09F DMA page register, 74LS612
0A0 - 0BF Interrupt controller 2, 8259
0C0 - 0DF DMA controller 2, 8237
0F0 Clear math coprocessor
0F1 Reset math coprocessor
0F8 - 0FF Math coprocessor
1F0 - 1F8 Primary hard disk interface
1E0 - 1E7 Secondary hard disk interface
200 - 207 Game I/O
278 - 27F Parallel printer port 2
2B0 - 2DF Alternate enhanced graphics adapter
2E1 GPIB (adapter 0)
2E2, 2E3 Data acquisition (adapter 0)
2F8 - 2FF Serial port 2
300 - 31F Prototype card
360 - 363 Available
368 - 36B Available
378 - 37A Parallel printer port 1
380 - 38F Available
390 - 393 Available
3A0 - 3AF Available
3B0 - 3BF Available
3C0 - 3CF VGA adapter
3D0 - 3DF VGA adapter
3F0 - 3F5 Diskette drive controller
3F8 - 3FF Serial port 1
6E2, 6E3 Available
790 - 793 Available
AE2, AE3 Available
B90, B93 Available
EE2, EE3 Available
1390 - 1393 Available
22E1 Available
2390 - 2393 Available
42E1 Available
63E1 Available
82E1 Available
A2E1 Available
C2E1 Available
E2E1 Available
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