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SOUND BOARD

COMPAQ COMPUTER CORPORATION

SOUND BOARD

Card Type

Sound card

Chipset Controller

Unidentified

I/O Options

Line in, Microphone in (2), volume control, stereo speaker out (2), mono speaker out, game/MIDI port, SCSI CD-ROM interface, CD-ROM audio out, PC speaker in

Maximum Dram

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

Line in

J1

Molex-D 4 audio out

J6

Microphone in

J2

Right (mono) speaker out

J7

Stereo speaker out

J3

Audio I/O (see table below)

J8

Game/MIDI port

J4

PC Speaker in

J9

SCSI CD-ROM interface

J5

Volume control

R1

CONNECTOR J8

Purpose

Pin

Purpose

Pin

Microphone in ground

1

Right speaker out

5

Microphone in ground

2

Left speaker out

6

Microphone in

3

Right speaker return

7

Speaker out ground

4

Left speaker return

8

INTERNAL AUDIO AMPLIFIER CONFIGURATION

Left amp

Right amp

JP5

Enabled

Enabled

Pins 2 & 3, 5 & 6 closed

Disabled

Disabled

Pins 1 & 2, 4 & 5 closed

BASE I/O ADDRESS FOR MIDI PORT SELECTION

Address

JP4

330h

Pins 1 & 2 closed

300h

Pins 1 & 2 open

BASE I/O ADDRESS FOR SOUND CARD SELECTION

Address

JP6

220h

Pins 7 & 8, 9 & 10 closed

240h

Pins 9 & 10 closed

260h

Pins 7 & 8 closed

280h

Pins 7 & 8, 9 & 10 open

BASE I/O ADDRESS FOR SCSI INTERFACE SELECTION

Address

JP7

340h

Open

140h

Closed

INTERRUPT FOR SCSI INTERFACE SELECTION

IRQ

JP3

9

Pins 1 & 2 closed

10

Pins 3 & 4 closed

11

Pins 5 & 6 closed

12

Pins 7 & 8 closed

INTERRUPT FOR SOUND CARD SELECTION

IRQ

JP4

2

Pins 11 & 12, 13 & 14 closed

5

Pins 13 & 14 closerd

7

Pins 11 & 12 closed

10

Pins 11 & 12, 13 & 14 open

GAME PORT CONFIGURATION

Port

JP6

Enabled

Pins 5 & 6 closed

Disabled

Pins 5 & 6 open

8-BIT DMA CHANNEL FOR SOUND CARD SELECTION

Channel

JP4

0

Pins 3 & 4, 5 & 6 closed

1

Pins 5 & 6 closed

3

Pins 3 & 4 closed

16-BIT DMA CHANNEL FOR SOUND CARD SELECTION

Channel

JP4

5

Pins 7 & 8, 9 & 10 closed

6

Pins 9 & 10 closed

7

Pins 7 & 8 closed

DMA CHANNEL FOR SCSI INTERFACE SELECTION

Channel

JP1

JP2

0

Pins 1 & 2 closed

Pins 1 & 2 closed

5

Pins 3 & 4 closed

Pins 3 & 4 closed

6

Pins 5 & 6 closed

Pins 5 & 6 closed

7

Pins 7 & 8 closed

Pins 7 & 8 closed