6.0 System Resource

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 PS/2 Mouse

 

13 MATH co-processor

 

14 Primary IDE

 

15 Secondary IDE

S1471-001-01 http://www.tyan.com

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Tyan Computer TYAN S1471 user manual System Resource, Timer MAP, DMA Channels, Nmi, Irq H/W