RAM 6004 Specifications download pdf (Page 104)

90 PCA-6004 User's Manual

B.21 DMA Channel Assignments

Table B-21: DMA channel assignments

Channel Function

0 Available

1 Available

2 Floppy disk (8-bit transfer)

3 Available

4 Cascade for DMA controller 1

5 Available

6 Available

7 Available

B.22 Interrupt Assignments

Table B-22: Interrupt assignments

Priority Interrupt# Interrupt source

1 NMI Parity error detected

2 IRQ0 Interval timer

3 IRQ1 Keyboard

- IRQ2 Interrupt from controller 2 (cascade)

4 IRQ8 Real-time clock

5 IRQ9 Cascaded to INT 0A (IRQ 2)

6 IRQ10 Available

7 IRQ11 Available

8 IRQ12 PS/2 mouse

9 IRQ13 INT from co-processor

10 IRQ14 Fixed disk controller

11 IRQ15 Available

12 IRQ3 Serial communication port 2

13 IRQ4 Serial communication port 1

14 IRQ5 Parallel port 2

15 IRQ6 Diskette controller (FDC)

16 IRQ7 Parallel port 1 (print port)

1 2 ... 99 100 101 102 103 104 105 106

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