[Coco] How SLENB works ?

[Darren A]

On Fri, Jul 18, 2014 at 10:06 AM, Torsten Dittel wrote:

> There was a cartridge design in the
> Rainbow which was what crackers called a
> freezer in these times: you could hold a
> program, inject a byte 00 @ address 113
> (overwriting a $55 if that was the byte
> indicating the Reset Service should be
> bent to the program's start) and executing
> a reset. You could then savem a RAM
> snapshot of the program e.g. protected by
> autostart.
>


That kind of trickery would need to make use of HALT rather than SLENB.

I seem to recall someone on this list using HALT to completely take over
control with an external CPU, essentially giving the CoCo a brain
transplant.

Darren