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Hardware - IRQs
Question | Answer |
---|---|
IRQ 0? | System Time |
IRQ 1? | Keyboard |
IRQ 2? | Cascade - not really used, connects to other IRQ chips |
IRQ 3? | Com 2+4, Serial port controller |
IRQ 4? | Com 1+3, Serial port controller |
IRQ 5? | LPT2 - Sound |
IRQ 6? | Floppy Controller |
IRQ 7? | LPT1 - printers and parallel port |
IRQ 8? | RTC - Real Time Clock |
IRQ 9? | Cascade same as 2 |
IRQ 10-11? | Available |
IRQ 12? | Mouse on PS/2 |
IRQ 13? | Math co-processor |
IRQ 14? | Primary ATA |
IRQ 15? | Secondary ATA |
IRQ Priority? | 0-2, 8-15, 3-7 |