X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 74 - irq12 - ps50+

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INT 74 - IRQ12 - PS50+ - MOUSE INTERRUPT
Notes:  may be masked by setting bit 4 on I/O port A1h
        under DESQview, only the INT 15h vector and BASIC segment address (the
          word at 0000h:0510h) may be assumed to be valid for the handler's
          process
SeeAlso: INT 33,INT 5C

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