Hardware
Interrups
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External hardware - NON-MASKABLE INTERRUPT
IRQ0 - SYSTEM TIMER
IRQ0 relocated by DESQview
IRQ0 relocated by DoubleDOS
IRQ0 relocated by IBM 3278 emulation control program
IRQ0 relocated by OS/2 v1.x
IRQ1 - KEYBOARD DATA READY
IRQ1 relocated by DoubleDOS
IRQ1 relocated by IBM 3278 emulation control program
IRQ1 relocated by OS/2 v1.x
IRQ10 - RESERVED
IRQ10 relocated by DESQview 2.26+
IRQ11 - RESERVED
IRQ11 relocated by DESQview 2.26+
IRQ12 - POINTING DEVICE (PS)
IRQ12 relocated by DESQview 2.26+
IRQ13 - MATH COPROCESSOR EXCEPTION (AT and up)
IRQ13 relocated by DESQview 2.26+
IRQ14 - HARD DISK CONTROLLER OPERATION COMPLETE (AT and later)
IRQ14 relocated by DESQview 2.26+
IRQ15
POWER CONSERVATION (Compaq SLT/286)
RESERVED (AT,PS)
IRQ15 - SECONDARY IDE CONTROLLER - OPERATION COMPLETE
IRQ15 relocated by DESQview 2.26+
IRQ2
LPT2 (PC), VERTICAL RETRACE INTERRUPT (EGA,VGA)
ROLAND MPU MIDI INTERFACE
IRQ2 - Tandy 1000-series HARD DISK
IRQ2 relocated by DESQview
IRQ2 relocated by DoubleDOS
IRQ2 relocated by IBM 3278 emulation control program, OS/2 v1.x
IRQ3 - SERIAL COMMUNICATIONS (COM2)
IRQ3 relocated by DESQview
IRQ3 relocated by DoubleDOS
IRQ3 relocated by IBM 3278 emulation control program, OS/2 v1.x
IRQ4 - SERIAL COMMUNICATIONS (COM1)
IRQ4 relocated by DESQview
IRQ4 relocated by DoubleDOS
IRQ4 relocated by IBM 3278 emulation control program, OS/2 v1.x
IRQ5
FIXED DISK (PC,XT), LPT2 (AT), reserved (PS/2)
IRQ5 - Tandy 1000 60 Hz RAM REFRESH
IRQ5 relocated by DESQview
IRQ5 relocated by DoubleDOS
IRQ5 relocated by IBM 3278 emulation control program, OS/2 v1.x
IRQ6 - DISKETTE CONTROLLER
IRQ6 relocated by DESQview
IRQ6 relocated by DoubleDOS
IRQ6 relocated by IBM 3278 emulation control program, OS/2 v1.x
IRQ7 - PARALLEL PRINTER
IRQ7 relocated by DESQview
IRQ7 relocated by DoubleDOS
IRQ7 relocated by IBM 3278 emulation control program, OS/2 v1.x
IRQ8 - CMOS REAL-TIME CLOCK
IRQ8 relocated by DESQview 2.26+
IRQ9 - REDIRECTED TO INT 0A BY BIOS
IRQ9 relocated by DESQview 2.26+
Screen Thief v1.00
RELOCATED IRQ0
RELOCATED IRQ1
RELOCATED IRQ2
RELOCATED IRQ3
RELOCATED IRQ4
RELOCATED IRQ5
RELOCATED IRQ6
Screen Thief v1.00 - RELOCATED IRQ7
Interrups
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