INT 21,24 - Set Relative Record Field in FCB
AH = 24h DS:DX = pointer to an opened FCB returns nothing - modifies opened FCB for random operation - sets FCB random record field to current sequential block and record fields
AH = 24h DS:DX = pointer to an opened FCB returns nothing - modifies opened FCB for random operation - sets FCB random record field to current sequential block and record fields