Specifications
Maintenance and Service Guide
6–13
Table 6-9
System DMA
Hardware DMA
System Function
DMA0
n/a
DMA1*
n/a
DMA2*
n/a
DMA3
n/a
DMA4
Direct memory access controller
DMA5*
Available for PC Card
DMA6
Not assigned
DMA7
Not assigned
*PC Card controller can use DMA 1, 2, or 5.
Table 6-10
System Interrupts
Hardware IRQ
System Function
IRQ0
System timer
IRQ1
Standard 101-/102-Key or Microsoft Natural Keyboard
IRQ2
Cascaded
IRQ3
Intel 82801DB/DBM USB2 Enhanced Host
Controller—24CD
IRQ4
COM1
IRQ5*
Conexant AC—Link Audio
Intel 82801DB/DBM SMBus Controller—24C3
Data Fax Modem with SmartCP
IRQ6
Diskette drive