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Service Hints & Tips

Document ID: LWIK-3RVKVV

TP 760CD - Hardware resource assignments

Applicable to: World-Wide

This is the default IRQ and DMA assignment for the ThinkPad 760CD.

ThinkPad 760CD Interrupt Assignments

IRQ
2

IRQ
3

IRQ
4

IRQ
5

IRQ
7

IRQ
8

IRQ
9

IRQ
10

IRQ
11

IRQ
15

DSP Modem

X

O

Serial Port

O

O

Infrared

O

X

O

O

O

O

DSP Sound Blaster

X

O

Parallel Port

O

X

DSP Audio

O

O

X

O

O

CD-ROM/ UltraBay Hard Drive

O

MPEG Enhanced Video


O


O



X


O


O


O

Cascade Interrupt

X

Where: X = Default; O = Optional

Note 1
The following interrupts are used by the system: IRQ 0 (Timer), IRQ 1 (Keyboard), IRQ 6 (Floppy Diskette Drive), IRQ 8 (Real-time Clock), IRQ 12 (Mouse/Trackpoint), IRQ 13 (Math Coprocessor), and IRQ 14 (Hard Disk Drive).

Note 2
If you enable the second hard disk drive in the UltraBay, it must use IRQ 15. This could cause a conflict with an existing device.

ThinkPad 760CD DMA Channel Assignments

DMA

Default Assignment

Other Possible Uses

DRQ 0

Infrared

Mwave DSP, Sound Blaster, Parallel Port ECP Mode

DRQ1

Sound Blaster

Mwave DSP, Parallel Port ECP Mode

DRQ 2

Diskette Drive

--

DRQ 3

Infrared

Parallel Port ECP Mode

DRQ 4

Cascade

--

DRQ 5

Unused

MPEG Enhanced Video

DRQ 6

MPEG Enhanced Video

Mwave DSP, Sound Blaster

DRQ 7

Mwave DSP

Sound Blaster, MPEG Enhanced Video



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Hint Category

Configuration

Date Created

20-02-98

Last Updated

31-03-98

Revision Date

12-03-99

Brand

IBM ThinkPad

Product Family

ThinkPad 760CD

Machine Type

9546

Model

Various

TypeModel

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