Tyan Computer TYAN S1668 user manual System Resources, Timer & DMA Channel MAP

6.0 System Resources

6.1. TIMER & DMA CHANNEL MAP

TIMER 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 Available
	DMA Channel-2 FLOPPY DISK adapter
	DMA Channel-3 Available
	DMA Channel-4 Cascade for DMA controller 1
	DMA Channel-5 Available
	DMA Channel-6 Available
	DMA Channel-7 Available
6.2 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 9-15

3 SERIAL port 2

4 SERIAL port 1

5 PARALLEL port 2

6 FLOPPY DISK adapter

7 PARALLEL port 1

8 RTC clock

9 Available

10 Available

11 Available

12 Available

13 MATH co-processor

14 Primary IDE Channel

15 Secondary IDE Channel

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