Writes a read error 21 to a 1571 or 1541 disk. Destroys the whole track!
SOFTWARE LIBRARY
The software
14,082 programs for the PET, VIC-20, C64, C128 and Plus/4, free to share and on our own shelf. Download one, or put it on a floppy and run it on The Machines.
Machine
Kind
Comes as
21-destructor
Bitmapping
A SYS-based BASIC extension for drawing bitmapped graphics. Written by Andreas Dietmair in 1989. Press the fire button to exit the intro screen. Requires 8 kilobytes of expans...
Flashscreen.828
[Model 2001-8N only] Flashes screen at ~ 60Hz - alter interrupt: POKE 538,3 : POKE 537,58
Micromon 23296
Excellent TIM monitor enhancement - loads at $5B00. Start with SYS 23296.
Micromon 24500
As micromon 23296 but includes a poke 59458,62 (fast VDU mode / killer POKE for some). Call with SYS 24500.