Int 4E - Z100 - Slave 8259 - S100 Vectored Line 6 Int 4E Fn 00 - Ti Professional Pc - Time-of-day Clock - Set Bios Date Int 4E Fn 01 - Ti Professional Pc - Time-of-day Clock - Set Bios Time Int 4E Fn 02 - Ti Professional Pc - Time-of-day Clock - Get Bios Data And T