 Get Current ZSDOS Time       - GETTIM
 Set Current ZSDOS Time       - SETTIM
 Get Current CP/M-Plus Time   - GTIMEP
 Set Current CP/M-Plus Time   - STIMEP
:
GETTIM - Get current ZSDOS time and date.

  ENTER: HL = address of 6-byte time and date buffer.
  EXIT:  Zero flag set (Z) and A=0 if buffer filled,
         Zero flag reset (NZ) if error or not ZSDOS.
  USES:  AF

Usage: Time is placed in buffer as BCD yy mm dd hh min ss.
:
SETTIM - Set current ZSDOS time and date.

  ENTER: HL = address of 6-byte time and date buffer.
  EXIT:  Zero flag set (Z) and A=0 if clock set,
         Zero flag reset (NZ) if error or not ZSDOS.
  USES:  AF

Usage: Buffer should be initialized with time as BCD yy mm dd hh min ss.
:
GTIMEP - Get current CP/M Plus time and date.

  ENTER: HL = address of 6-byte time and date buffer.
  EXIT:  Zero flag set (Z) and A=0 if buffer filled,
         Zero flag reset (NZ) if error or not CP/M Plus.
  USES:  AF

Usage: Time is placed in buffer as BCD yy mm dd hh min ss.

:
STIMEP - Set current CP/M Plus time and date.

  ENTER: HL = address of 6-byte time and date buffer.
  EXIT:  Zero flag set (Z) and A=0 if clock set,
         Zero flag reset (NZ) if error or not CP/M Plus.
  USES:  AF

Usage: Buffer should be initialized with time as BCD yy mm dd hh min ss.
