Int 31

VIRUS - Vacsina series - INSTALLATION CHECK (NOT A VECTOR!)

Note: If one of the Vacsina viruses is resident, the low byte of this interrupt still contains the last byte of the INT 30 CP/M JMP instruction, but the remaining three bytes are 7Fh 39h followed by the Vacsina version number

See Also: INT 21/AX=FFFFh"VIRUS" - INT 32"VIRUS"

Category: Viruses - Int 31h - V

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