Appendix a2 – EPoX Computer KP6-FX2 User Manual

Page 41

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A-3

TIME & DMA CHANNELS MAP

TIME MAP:
TIMER

Channel 0

System timer interrupt.

TIMER

Channel 1

DRAM REFRESH request.

TIMER

Channel 2

SPEAKER tone generator.

DMA CHANNELS:
DMA Channel 0

Available.

DMA Channel 1

Onboard ECP (Option).

DMA Channel 2

FLOPPY DISK (SMC CHIP).

DMA Channel 3

Onboard ECP (default).

DMA Channel 4

Cascade for DMA controller 1.

DMA Channel 5

Available.

DMA Channel 6

Available.

DMA Channel 7

Available

A-4

INTERRUPT MAP

NMI :

Parity check error.

IRQ (H/W):

0

System TIMER interrupt from TIMER 0.

1

KEYBOARD output buffer full.

2

Cascade for IRQ 8-15.

3

SERIAL port 2.

4

SERIAL port 1.

5

PARALLEL port 2.

6

FLOPPY DISK (SMC CHIP).

7

PARALLEL port 1.

8

RTC clock.

9

Available.

10

Available.

11

Available.

12

PS/2 Mouse.

13

MATH coprocessor.

14

Onboard HARD DISK (IDE1) channel.

15

Onboard HARD DISK (IDE1) channel.

Appendix

A2

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