INT 1A,5 - Set Real Time Clock Date (XT 286,AT,PS/2)
AH = 05 CH = century in BCD (decimal 19 or 20) CL = year in BCD DH = month in BCD DL = day in BCD returns nothing - all values must be in BCD - see RTC
AH = 05 CH = century in BCD (decimal 19 or 20) CL = year in BCD DH = month in BCD DL = day in BCD returns nothing - all values must be in BCD - see RTC