Int 10H Function 1AH
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Description: Get or Set Display Combination Code [PS/2]
Returns a code describing the installed display adapter(s), or updates
the ROM BIOS's variable describing the installed adapter(s).
Input Output
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AH=1AH If function supported
AL=subfunction AL=1AH
00H=get display and, if called with AL=00H
combination code BH=inactive display code
01H=set display BL=inactive display code
combination code
BH=inactive display
code (if AL =01H)
BL=active display
code (if AL =01H)
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