[Vm-dev] Bochs simulator plug-in structure

[Chris Cunnington]

http://www.mirandabanda.org/files/Cog/VM/VM.r2550/
http://www.osrcon.ca/screen.png
http://www.osrcon.ca/screen2.png
http://www.osrcon.ca/screen3.png


"you need a Boch plugin to run this code. This plugin is not shipped 
with VMs built by Jenkins server. Not sure about Eliot's builds."

Running this image on the latest Cog build, which has Bochs, which you 
can see from the screen shots, is an advance. The simulator appears, but 
the whole image is frozen. Until it throws an error, as seen in 
screen2.png, the only living thing is the scrolling output in the bottom 
left pane.

Of course, none of this may be a problem. I use the 2.7 
InterpreterSimulatorLSB, where the simulated image runs, while the host 
image, the one with the vm is frozen. My solution is to plant a 'self 
halt' in Interpreter>>primtiveSomeInstance. Then I evaluate SystemTracer 
allInstances. Bang. The simulated image goes up in a puff of smoke 
leaving a debugger in the host image, which is pure gold. I can explore 
the values in the ObjectMemory and such. I imagine I could do something 
similar here.

Chris