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SOUND BOARD
COMPAQ COMPUTER CORPORATION
SOUND BOARD
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Card Type
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Sound card
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Chipset Controller
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Unidentified
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I/O Options
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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
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Maximum Dram
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N/A
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Line in
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J1
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Molex-D 4 audio out
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J6
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Microphone in
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J2
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Right (mono) speaker out
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J7
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Stereo speaker out
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J3
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Audio I/O (see table below)
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J8
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Game/MIDI port
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J4
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PC Speaker in
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J9
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SCSI CD-ROM interface
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J5
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Volume control
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R1
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CONNECTOR J8
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Purpose
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Pin
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Purpose
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Pin
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Microphone in ground
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1
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Right speaker out
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5
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Microphone in ground
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2
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Left speaker out
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6
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Microphone in
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3
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Right speaker return
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7
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Speaker out ground
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4
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Left speaker return
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8
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INTERNAL AUDIO AMPLIFIER CONFIGURATION
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»
Left amp
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Right amp
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JP5
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»
Enabled
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Enabled
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Pins 2 & 3, 5 & 6 closed
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»
Disabled
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Disabled
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Pins 1 & 2, 4 & 5 closed
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BASE I/O ADDRESS FOR MIDI PORT SELECTION
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»
Address
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JP4
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»
330h
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Pins 1 & 2 closed
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»
300h
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Pins 1 & 2 open
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BASE I/O ADDRESS FOR SOUND CARD SELECTION
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»
Address
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JP6
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»
220h
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Pins 7 & 8, 9 & 10 closed
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»
240h
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Pins 9 & 10 closed
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»
260h
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Pins 7 & 8 closed
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»
280h
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Pins 7 & 8, 9 & 10 open
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BASE I/O ADDRESS FOR SCSI INTERFACE SELECTION
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»
Address
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JP7
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»
340h
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Open
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»
140h
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Closed
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INTERRUPT FOR SCSI INTERFACE SELECTION
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»
IRQ
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JP3
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»
9
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Pins 1 & 2 closed
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»
10
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Pins 3 & 4 closed
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»
11
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Pins 5 & 6 closed
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»
12
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Pins 7 & 8 closed
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INTERRUPT FOR SOUND CARD SELECTION
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»
IRQ
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JP4
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»
2
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Pins 11 & 12, 13 & 14 closed
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»
5
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Pins 13 & 14 closerd
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»
7
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Pins 11 & 12 closed
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»
10
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Pins 11 & 12, 13 & 14 open
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GAME PORT CONFIGURATION
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»
Port
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JP6
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»
Enabled
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Pins 5 & 6 closed
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»
Disabled
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Pins 5 & 6 open
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8-BIT DMA CHANNEL FOR SOUND CARD SELECTION
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»
Channel
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JP4
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»
0
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Pins 3 & 4, 5 & 6 closed
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»
1
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Pins 5 & 6 closed
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»
3
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Pins 3 & 4 closed
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16-BIT DMA CHANNEL FOR SOUND CARD SELECTION
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»
Channel
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JP4
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»
5
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Pins 7 & 8, 9 & 10 closed
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»
6
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Pins 9 & 10 closed
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»
7
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Pins 7 & 8 closed
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DMA CHANNEL FOR SCSI INTERFACE SELECTION
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»
Channel
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JP1
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JP2
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»
0
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Pins 1 & 2 closed
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Pins 1 & 2 closed
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»
5
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Pins 3 & 4 closed
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Pins 3 & 4 closed
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»
6
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Pins 5 & 6 closed
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Pins 5 & 6 closed
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»
7
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Pins 7 & 8 closed
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Pins 7 & 8 closed
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