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Hardware - IRQs

QuestionAnswer
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
Created by: Datheral
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