X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 21 - pcmag pcmanage/dcompres

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INT 21 - PCMag PCMANAGE/DCOMPRES - TURN ON/OFF
        AH = DCh
        DX = state
            0000h turn on
            0001h turn off
SeeAlso: AX=FEDCh

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