X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 15 - desqview 2.26+ - assertvir

Click above to get retro games delivered to your door ever month! X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 15 - desqview 2.26+ - assertvir - control 386 screen virtualization

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INT 15 - DESQview 2.26+ - "ASSERTVIR" - CONTROL 386 SCREEN VIRTUALIZATION
        AX = DE21h
        BX = 0000h turn off
             nonzero turn on
Return: BX = old state of virtualization
Note:   this API call may be made from within a hardware interrupt handler

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