System dma specifications, System interrupt specifications – Hitachi ELITEBOOK 2730P User Manual
Page 85

Specifications
Maintenance and Service Guide
6–3
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*
Not applicable
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
IRQ8
System CMOS/real-time clock
IRQ12
Synaptics PS/2 TouchPad
IRQ13
Numeric data processor
IRQ16
Intel® ICH9 Family USB universal Host Controller 2937
Mobile Intel 4 Series Express Chipset Family
IRQ17
High Definition Audio Controller
Intel® ICH9 Family USB universal Host Controller 2938
Marvel Yukon 88E8072 PCIE-Gigabit Ethernet Controller
IRQ18
Intel® ICH9 Family USB universal Host Controller 2939
Intel® ICH9 Family USB universal Host Controller 2936
IRQ19
Intel® ICH9 Family USB2 Enhanced Controller 293C
IRQ20
Intel® ICH9 Family USB2 Enhanced Controller 293A
Intel® ICH9 Family USB universal Host Controller 2934
IRQ21
Intel® ICH9M-E/M SATA AHCI Controller
IRQ22
Intel® ICH9 Family USB universal Host Controller 2935
*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.
✎
For operating systems after Windows 2000, APIC (Advanced programming interrupt controller) is used.