8.2.4 in Z-machine standard 1.1 states:
The status line is updated in exactly two circumstances: when a show_status opcode is executed, and just before the keyboard is read by read . (It is not displayed when the game begins.)
However, Infocom’s v3 interpreters for the C64 (at least the old one used for Enchanter and the newer used for Hollywood Hijinx and Ballyhoo) prints the statusline when the game hits the first MORE prompt.
Is this incorrect behaviour on behalf of these interpreters? Were there other Infocom terps for computers with small screens which behaved differently? I believe the C64 terp was based on the code for the Apple II terp, so I would think they act the same, but what about other home computers of the era?