Acrosser AR-B1851 User Manual
Page 41
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AR-B1851 User’s Guide
AR-B1851
41
IRQ Mapping Chart
IRQ0(ISA) System Timer
IRQ15(ISA) Secondary IDE
IRQ1(ISA) Keyboard
IRQ9(PCI) SMBus
IRQ3(ISA) COM2
IRQ16(PCI)
USB
Universal
IRQ4(ISA) COM1
IRQ16(PCI)
Graphics
IRQ8(ISA) System
CMOS/RTC IRQ17(PCI) AC’97
IRQ9I(ISA) ACPI-Compliant IRQ18(PCI) USB Universal
IRQ10(ISA) COM4
IRQ19(PCI) USB Universal
IRQ11(ISA) COM3
IRQ20(PCI) Network #2
IRQ12(ISA) Mouse
IRQ21(PCI) Network
IRQ13(ISA) Math Coprocessor IRQ23(PCI) USB2 Enhanced
IRQ14(ISA) Primary IDE
DMA Channel Assignments
CHANNEL
FUNCTION
0 Available
1
Available
2 Available
3 Available
4
Cascade for DMA controller 1
5 Available
6 Available
7 Available
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