Specifications

D-2 System Mapping
DMA Channels
Table D-2: DMA Channel Assignments
DMA Channel Assignment
DMA 0 Available
DMA 1 Used - Audio
DMA 2 Used - Floppy Disk Drive
DMA 3 Available
DMA 4 System Reserved
DMA 5 Used - Audio
DMA 6 IrDA1.1
DMA 7 Available
System Interrupts
IRQ assignments can be changed by Windows 95. The following are fixed, or
defaults.
Table D-3: System Interrupt Assignments
IRQ Assignment
IRQ0 Used - System Timer
IRQ1 Used - Keyboard
IRQ2 Used - Slave Interrupt
IRQ3 Used - COM2, COM4
IRQ4 Used - COM1, COM3
IRQ5 Used - Audio
IRQ6 Used - Floppy Disk Controller
IRQ7 Used - LPT1
IRQ8 Used - RTC
IRQ9 Used - Software redirect VGA
IRQ10 System Reserved
IRQ11 Available
IRQ12 Used - PS/2 mouse
IRQ13 Used - NPU
IRQ14 Used - HDD
IRQ15 Used - CD-ROM