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AX = 4F17h BL = function 00h installation check / get capabilities other registers vary by function
Return:
AL = 4Fh if function supported AH = status 00h successful 01h failed 02h hardware does not support function 03h function not available in current video mode else reserved for future error codes other vary by function
Notes: The accelerator function code should be given a 32-bit protected mode stack which has at least 1024 bytes available for use by the VBE/AF code. When called, the I/O permission bitmap must allow access to any ports which VBE/AF may require for operation
See Also: AX=4F0Bh
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