The slow motion thing can be found in BEEBUG, Volume 2 No. 6, p31: http://8bs.com/beebugmags.htm http://8bs.com/beebugmags.htm It does overload the system with

The slow motion thing can be found in BEEBUG, Volume 2 No. 6, p31: http://8bs.com/beebugmags.htm http://8bs.com/beebugmags.htm It does overload the system with interrupts, by making the (normally 100Hz) timer interrupt that the OS uses occur a lot more frequently.