Figure B-10. Microphone Jack

Line-Out Jack

The line-out jack (see Figure B-11) can be used to attach most computer speakers. The line-out jack is amplified, so speakers with integrated amplifiers are not required. Connect the audio cable from the speakers to this jack.

Figure B-11. Line-Out Jack

Line-In Jack

The line-in jack (see Figure B-12) can be used to attach record/playback devices such as cassette players, CD players, and VCRs. Connect the line-out cable from any of these devices to the line-in jack on the back of your computer.

Figure B-12. Line-In Jack

Interrupt Assignments

Problems can arise if two devices attempt to use the same IRQ line. To avoid this type of conflict, check the documentation for the default IRQ line setting for each installed device. Then consult Table B-9 to configure each device for one of the available IRQ or other lines.

NOTE: Interrupts for the on-board sound, NIC, and both SCSI channels are assigned dynamically by the system basic input/output system (BIOS).

Table B-9. Interrupt Assignments
IRQ LineUsed By/Available

 

 

 

 

IRQ0

System timer

 

 

 

 

IRQ1

Keyboard controller

 

 

 

 

IRQ2

Interrupt controller (enables IRQ8 through IRQ15)

 

 

 

 

IRQ3

Serial ports

and

 

IRQ4

 

 

 

 

 

IRQ5

Available