X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 67 - virtual control program interface

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INT 67 - Virtual Control Program Interface - GET 8259 INTERRUPT VECTOR MAPPINGS
        AX = DE0Ah
Return: AH = 00h successful
            BX = first vector used by master 8259 (IRQ0)
            CX = first vector used by slave 8259 (IRQ8)
        AH nonzero: failed
Note:   CX is undefined in systems without a slave 8259
SeeAlso: AX=DE0Bh

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