There is an small error in the version 06 that ...

There is an error in the code that however does not prevent the correct execution of the simulator.
You can fix by yourself if you want to...

err: char * ps = (WORD * )&vid; // video memory pointer
err: char * ls = (WORD * )&vbtmp; // line buffer pointer

fix: char * ps = (char * )&vid; // video memory pointer
fix: char * ls = (char * )&vbtmp; // line buffer pointer