HP M2017AP, M2401XT, M2031AP, M2056AP System DMA, System Interrupts, Hardware DMA System Function

Specifications

	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

Maintenance and Service Guide 6–13