This program simulates a chess clock. Launch the program, select the time that each player has in the menu and select if Player 1 or Player 2 is white.
The program was debugged in MS Basic 3.0, compiled in the MS Basic Compiler, then changed a bit in Apple’s Resedit.
Hit any key to change whose clock is active and click in the active window to get a pull-down menu with restart or quit as options.