
SYSTEM INTERRUPTS (IRQS)
IRQ | Description  | 
IRQ0  | System Timer  | 
IRQ1  | Keyboard  | 
IRQ2  | Cascade to IRQ Controller  | 
IRQ3  | COM2/COM4  | 
IRQ4  | COM1/COM3  | 
IRQ5  | Unused  | 
IRQ6  | Floppy Drive (FDC)  | 
IRQ7  | Printer  | 
IRQ8  | Real Time Clock  | 
IRQ9  | Unused  | 
IRQ10  | Unused  | 
IRQ11  | Unused  | 
IRQ12  | PS/2 Mouse  | 
IRQ13  | FPU  | 
IRQ14  | Primary IDE  | 
IRQ15  | Secondary IDE  | 
DMA CHANNEL ASSIGNMENTS
Channel | Function | 
0  | Available  | 
1  | Available  | 
2  | Floppy disk (   | 
3  | Available  | 
4  | Cascade for DMA Controller 1  | 
5  | Available  | 
6  | Available  | 
7  | Available  | 
Board Configuration  | 24  |