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6.8 System Interrupts
Hardware IRQ
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ12
IRQ13
IRQ14
Notes:
PCMCIA cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15.
Either the infrared or the serial port may assert IRQ3 or IRQ4.
* Default configuration; audio possible configurations are: IRQ5, IRQ7, IRQ9, IRQ10, or none.
6.9 System DMA
Hardware DMA
DMA0
DMA1
DMA2
DMA3
DMA4
DMA5
DMA6
DMA7
Note: PC Card controller can use DMA 1, 2, or 5.
Table 6-10
System Interrupts
System Function
Timer Interrupt
Cascaded
PCMCIA
COM1
Audio (default)*
Diskette drive
Parallel
RTC
Infrared
PCMCIA
Internal Point Stick or External Mouse
Coprocessor (Not available to any peripheral)
IDE Interface (Hard Disk)
Table 6-11
System DMA
System Function
Available for audio
Entertainment Audio (Default; Alternate = DMA0, DMA3, None)
Diskette Drive
ECP Parallel Port LPT1 (Default; Alternate = DMA0, None)
DMA Controller Cascading (Not available)
Available for PC Card
Not Assigned
Not Assigned
Specifications
6-7
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