You can alter the processing speed of the Beeb's Basic with location &FE45 (6522 VIA TIC-H).
Use ?&FE45=1 to slow down the system and cause it to stop when a key is pressed (besides Escape and Break) - handy for debugging. Using ?&FE45=225 causes it to go about eight times faster although the keyboard is scanned very rarely. The normal value is approximately 32 and should be reset to this before exiting a program or waiting for an input from the keyboard.
The timer in location &FE45 appears to be the countdown till the next keyboard scan interrupt occurs.
16th February 1985
