Document Number: 107315-027, Volume 2
Publication Date: July 1996
This section contains the Compaq default settings for the Spectrum
16 sound board. To ensure optimal performance and integration,
Compaq has changed some of the original default settings on the
board. Settings listed in this section are correct for use in
your system. They may not agree with those listed in your Spectrum
Multimedia Sound Card User's Guide.
| Setting Type | Hardware Selectable Jumper | Software Selectable Resource Utility | Original Setting | Available | Compaq Default |
| IRQ Select | J14 | No | IRQ 3 | IRQ 3,4,5,6 | IRQ 5 |
| DMA Select | N/A | ||||
| I/O Address | N/A | No | 340h | 300h- | 300-33Fh |
| 34Fh | 30Fh | ||||
| 310h- | |||||
| 31Fh | |||||
| 330h- | |||||
| 33Fh | |||||
| 340h- | |||||
| 34Fh | |||||
| Pins | IRQ Channel |
| 1-2 | IRQ6 (Used by the diskette) |
| 3-4 | IRQQ5 (Compaq default) |
| 5-6 | IRQ4 |
| 7-8 | IRQ8 |
| Pins | I/O Address |
| 1-3, 2-4 | 340h (original setting) |
| 3-5, 2-4 | 330h (Compaq default) |
| 1-3, 4-6 | 310h |
| 3-5, 4-6 | 300h
|
| Jumper | Function |
| 1 (MSEL) | Shunt is present, parked |
| 2 (DASO) | None present |
| 3 (DASI) | Shunt is present, parked |
| 4 (DBSO) | Shunt is present, parked |
| 5 (DBS1) | Shunt is present, parked |
| 6 (ISO) | None present |
| 7 (IS1) | Shunt is present, parked |
| 8 | Shunt is present, parked |
| 9 | Shunt is present, parked |
| 10 | Shunt is present, parked |
| 11 | None present |
| 12 (PINS 2 and 3) | Shunt is present, parked |
| 13 (PINS 2 and 3) | Shunt is present, parked |
| 14 (PINS 6 and 7) | Shunt is present, parked |
| 15 (PINS 1 and 2) | Shunt is present, parked |
| 16 | Shunt is present, parked |
| 17 | Shunt is present, parked |
| 18 | Shunt is present, parked |
| 19 | None present |
| 20 | None present |
| 21 | None present |
| 22 | None present |
| 23 | None present |
| 24 | Shunt is present, parked |
| 25 | None present |
| 26 | Shunt is present, parked |
| 27 | None present |
| 28 | None present |
| 29 | None present |
| 30 | None present
|
| Setting Type | Hardware Selectable Jumper | Software Selectable Resource Utility | Original Setting | Available | Compaq Default |
| IRQ Select | No | INSTALL.EXE or AUTOEXEC.BAT command line switch | IRQ7 | IRQs selectable: 2 (9), 3, 5, 7, 10, 11, 12, and 15 | IRQ 10 |
| DMA Select | No | INSTALL.EXE or AUTOEXEC.BAT command line switch | DMA3 | DMAs selectable:0, 1, 2, 3, 5, 6, 7
DMA's not recommended: 2 | DMA7 |
| I/O Address | J2 | No | -- | 280h - 283h | 388h- |
| 288h-28Bh | 38Bh | ||||
| 384h-387h | |||||
| 388h-38Bh | |||||
| 38Ch-38Fh
|
| Setting Type | Hardware Selectable Jumper | Software Selectable Resource Utility | Original Setting | Available | Compaq Default |
| IRQ Select | No | INSTALL.EXE or AUTOEXEC.BAT command line switch | IRQ5 | IRQs selectable: 2 (9), 3, 5, and 7 | IRQ 7
IRQ 7 can be used if printer does not require an interrupt |
| DMA Select | No | INSTALL.EXE or AUTOEXEC.BAT command line switch | DMA1 | DMAs selectable:
0, 1, 3 | DMA1 |
| I/O Address | No | INSTALL.EXE or AUTOEXEC.BAT command line switch | 220h - 22Fh | 220h - 22h
230h - 23Fh 240h - 24Fh | 220h-22Fh
|
| Setting Type | Hardware Selectable Jumper | Software Selectable Resource Utility | Original Setting | Available | Compaq Default |
| IRQ Select | No | INSTALL.EXE or AUTOEXEC.BAT disabled switch | IRQ2,9 | IRQs selectable: 2 (9), 3, 5, and 7
IRQs not recommen-ded: 3, 5, 7 | IRQ 2 Resourse Disabled |
| DMA Select | No | ||||
| I/O Address | No | INSTALL.EXE or AUTOEXEC.BAT disabled command line switch | 300h - 32Fh | 300h - 32Fh
330h-35Fh | 300h - 32Fh
Resource Disabled |
| Setting Type | Hardware Selectable Jumper | Software Selectable Resource Utility | Original Setting | Available | Compaq Default |
| IRQ Select | N/A | ||||
| DMA Select | N/A | ||||
| I/O Address Select | No | Enable Only | 201h | 201h | 201h
|
| Pin | Description | ||
| 1 | MICGND: Mic input ground | ||
| 2 | MICGND: Mic input ground | ||
| 3 | MIC IN: Mic input | ||
| 4 | SPKGND: Speaker output ground | ||
| 5 | SPKR | Speaker output: | Right channel |
| Maximum output: | 0.8 Vrms at 10k ohms for line-out. 3 Vrms at 4 ohms for speaker out. | ||
| 6 | SPKR | Speaker output: | Left channel |
| Maximum output: | 0.8 Vrms at 10k ohms for line-out. 3 Vrms at 4 ohms for speaker out. | ||
| 7 | SPKRL | Speaker output return signal: | Left channel |
| 8 | SPKRL | Speaker output return signal: | Right channel
|
| Pin | Description | ||
| 1 | SPKR | Speaker output: | Right channel |
| Maximum output: | 0.8 Vrms at 10k ohms for line-out. 3 Vrms at 4 ohms for speaker out. | ||
| 2 | SPKRR | Speaker output return signal: | Right channel
|
