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VDU23,0,12 allowed you to set the start of screen memory to different addresses on the BBC Micro. You could make it display the first 20K of memory so that the OS workspace and program were visible on screen. You could see counters in zero page being updated, and variables changing as the program ran.

Its never done anything on ARM based machines, so you have to ask why its taken almost 20 years to remove it from the kernel.

Cheers ---Dave

 is a RISC OS Userdruck on 25/3/04 5:52PM
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