INT 15 - MultiDOS Plus - UNMAP IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated.
AH = 18h
AL = IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. to unmap (01h-0Fh)
Return: AX = status
0000h successful
0001h invalid IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated.
Note: results are unpredictable if the IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. has not been mapped
SeeAlso: AH=17h"MultiDOS",AH=19h"MultiDOS"