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AppleTalk and Time

ProDOS GET_TIME Behavior

Under some circumstances1), the Apple II Workstation Card will respond to the ProDOS GET_TIME call with a response retrieved from the server, but only if MACHID bit 0 does not indicate clock is installed. This has the effect that regularly calling GET_TIME will keep the ProDOS time/date updated.

Unfortunately, there are many programs that check MACHID bit 0 and if it is unset, don't call GET_TIME before prompting the user to enter the date and time. Thus the benefit is possibly erased if GET_TIME hasn't been called yet.

Time Zone

The Workstation Card firmware provides a system call to set a relative time zone offset from the AFP server. However, none of the Workstation Card software allows setting this.

1)
at the very least, when booted over AppleTalk, maybe other times