I adapted it to run natively on RISC OS and also on Windows using BBC BASIC for Windows and Alan has given permission for it to appear here.

CLOCK2 (L)	12K	BBC BASIC
CLOCK2.BBC	12K	BBFW
CLOCK2.EXE	93K	Windows binary

Instructions

The program allows the user to type in the production details on the slate. Use the cursor keys to move around within each box and Shift-Return to move to the next box. The countdown may be started at any ten-second point, and the take number is incremented automatically.

When the clock is at rest, the following keys are recognised:

1 set the clock to 10 seconds 2 set the clock to 20 seconds 3 set the clock to 30 seconds 4 set the clock to 40 seconds > increment the TAKE number < decrement the TAKE number SPACE start the countdown	S lets you type in the SHOT box P lets you type in the PROG box D lets you type in the DATE box F set Auto-Fade on/off B Blank display before countdown starts C Continue countdown E exit the program
At any point pressing ESCAPE will display the menu. The User Port is set to various values as the countdown progresses. These can be used to control external equipment.
Each line goes to logical one as follows: Bit 0 While the clock is counting Bit 1 From 30s to 20s Bit 2 From 20s to 15s Bit 3 From 10s to 0s Bit 4 From 6s to 0s Bit 5 From 5s to 0s Bit 6 From 3s to 0s	Giving the following bit pattern: 00000000 Before starting 00000001 40s 00000011 30s 00000101 20s 00000001 15s 00001001 10s 00011001 6s 00111001 5s 01111001 3s 00000000 0s

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Authored by J.G.Harston
Last update: 13-Dec-2006