DOS/32 Advanced DOS Extender - Programmer's Reference


4.01 - VGA function 1Bh - Read Functionality Information

 

In: AH = 1Bh
EBX = 0000h (implementation type)
ES:EDI = pointer to 64 byte buffer
Out: AL = 1Bh (if function supported by VGA BIOS)
EBX = implementation type
ES:EDI = pointer to buffer filled with VGA BIOS information

Notes:

a) This call can be used to determine whether a VGA BIOS is supported by the Video BIOS in ROM. If function returns AL=1Bh, the machine is VGA compatible. To determine the presence of the VGA BIOS you can also call VGA BIOS functions AX=1A00h and AH=1Ch.

 


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