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Int 10 Fn CD07 - Video - Ultravision V1.2+ - Set Underline Status (ega,v [V]
AX = CD07h
CL = hardware underline status
00h off (color systems only)
01h underline below characters
02h strike through characters
BL = foreground color for normal text (FFh = current)
BH = foreground color for bright text (FFh = current)
Return: CL = hardware underline status
BL = current foreground color for normal text
BH = current foreground color for bright text
Notes: when underline or strikeout is enabled in color text modes, the
specified colors will be assigned temporarily to colors 01h and 09h,
allowing affected text to match non-underlined text. The color
remapping uses values from the current onscreen palette regardless
of the palette locking status (see AX=CD01h)
specify the standard colors (BL=01h,BH=09h) to enable underline or
strikeout without color remapping
See Also: AX=CD08h
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