> my experience with rascall has been that it crashes the 86 when i > attempt to run an 85 assembly program For one reason or another (usually illegal ROM calls), many 85 programs will crash both Rascall and ASE (for example, Insane). I have never actually experienced a crash caused by ASE 0.9b though (the version I use now because it's better than 1.0). I recommend you use that.