X-Hacker.org- XMS Specification (version 3.0) - <b>determining if an xms driver is installed</b>

Click above to get retro games delivered to your door ever month! X-Hacker.org- XMS Specification (version 3.0) - <b>determining if an xms driver is installed</b>

[<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]

DETERMINING IF AN XMS DRIVER IS INSTALLED

The recommended way of determining if an XMS driver is installed is to
set AH=43h and AL=00h and then execute INT 2Fh.  If an XMS driver is
available, 80h will be returned in AL.

        Example:

        ; Is an XMS driver installed?

        mov     ax,4300h
        int     2Fh
        cmp     al,80h
        jne     NoXMSDriver

Online resources provided by: http://www.X-Hacker.org --- NG 2 HTML conversion by Dave Pearson