INT 21 - VIRUS - "905"/"Backfont" - INSTALLATION CHECK
AX = C301h
DX = F1F1h
Return: DX = 0E0Eh if resident
SeeAlso: AX=C500h"VIRUS"

See also: 21C0

21C301DXF1F1 - VIRUS - "905"/"Backfont" - INSTALLATION CHECK