Int 15 Fn 12 - Desqview V2.50+ - Send Message 0dh With Error Recovery [Q]
AH = 12h
BH = 8Dh
Note: this function is identical to AH=12h/BH=0Dh, except that DESQview will
not pop up a "Programming Error" window, instead returning an error
code in AL (see #0381)
See Also: AH=12h/BH=0Dh