HP G60 549DX Service Guide - Page 94

System DMA specifications, System interrupt specifications

Page 94 highlights

System DMA specifications Hardware DMA System function DMA0 Not applicable DMA1* Not applicable DMA2* Not applicable DMA3 Not applicable 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. System interrupt specifications Hardware IRQ System function IRQ0 System timer IRQ1 Standard 101-/102-key or Microsoft® Natural Keyboard IRQ2 Cascaded IRQ4 COM1 IRQ6 Diskette drive IRQ7* Parallel port IRQ8 System CMOS/real-time clock IRQ9* Microsoft ACPI-compliant system IRQ12 Synaptics PS/2 TouchPad IRQ13 Numeric data processor IRQ14 Primary IDE channel IRQ15 Secondary IDE channel *Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none. ✎ PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4. Specifications 6-5

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Specifications
6–5
System DMA specifications
System interrupt specifications
Hardware
DMA System function
DMA0
Not applicable
DMA1*
Not applicable
DMA2*
Not applicable
DMA3
Not applicable
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.
Hardware IRQ
System function
IRQ0
System timer
IRQ1
Standard 101-/102-key or Microsoft
®
Natural Keyboard
IRQ2
Cascaded
IRQ4
COM1
IRQ6
Diskette drive
IRQ7*
Parallel port
IRQ8
System CMOS/real-time clock
IRQ9*
Microsoft ACPI-compliant system
IRQ12
Synaptics PS/2 TouchPad
IRQ13
Numeric data processor
IRQ14
Primary IDE channel
IRQ15
Secondary IDE channel
*Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none.
PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port
may assert IRQ3 or IRQ4.