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AX = BF12h BH reserved BL = function mask (see #00215)
Return:
CF clear
Notes: This function is a NOP if the VGA subsystem is inactive or the current Display Combination Code is 10h or higher. Supported by at least the QVision board and the LTE Lite and ProSignia ROM BIOSes
See Also: AX=BF01h - AX=BF02h - #00733
Bitfields for function mask: Bit(s) Description (Table 00215) 7 command mode. If set, bits 1 and 0 make the monitor active when set. If clear, bits 1 and 0 toggle the monitor's state when set 6-2 reserved 1 internal monitor 0 external monitor
Category: Vendor-specific BIOS Extensions - Int 10h - V
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