INT 1A - Sperry PCIBM PC - SET REAL-TIME CLOCK DATE AH = 05h CL = year-1980 CH = 00h (???) DH = month (binary) (01h-0Ch) DL = day (binary) (01h-1Fh) Return: nothing SeeAlso: AH=02h,AH=04h"Sperry",AH=05h,INT 21/AH=2Bh"DATE"