AH = 02h: Read RTC Time

This function reads the time from the real-time clock.

• Input: AH = 02h
• Output: AH = 00h
  CH = Hours in BCD
  CL = Minutes in BCD
  DH = Seconds in BCD
  DL = Day Light Savings flag
  Carry Clear
  Note: The HP palmtop does not use or modify the Day Light Savings flag. It is returned for compatibility only.

• Error conditions: Carry Set if RTC data is invalid
• Registers modified: AX, CX, DX, STATUS