Workings of a TTY

Thanks to all that responded and to those who (gently) pointed out my ignorance of the difference between a KSR and an ASR. This list is such a good learning tool. The reason I was asking was that I am in the midst of a project to write an emulator package in Java which is flexible enough to support many different types of CPU's. I have CPU emulators for 6809, 6502, Varian 620/i almost done and some others partially started e.g XDS 930. My first I/O device is an ASR 33, and that now works fine with my Varian 620/i emulator, I can toggle in the bootstrap on the emulated console and read in (garbage) "tapes" emulated by binary files. If anyone has any 620/i paper tape software I would be happy to pay shipping costs, and return it when I have copied it. Anyone who wants to try out my emulator please Email me. It is still a little rough and needs JDK 1.1.4 support so won't run on all the "standard" browsers yet but runs fine although slowly as a Java application. -- Hans B. Pufal : <mailto:hansp@digiweb.com> Comprehensive Computer Catalogue : <http://www.digiweb.com/~hansp/ccc/> _-_-__-___--_-____-_--_-_-____--_---_-_---_--__--_--_--____---_--_--__--_