ASR33 Teletype interfacing

Tony wrote: You need at least a little bit of code conversion if you're using a model 33 with the standard type element with equipment that uses modern character sets, as the model 33 uses the 1963 ASCII standard (ANSI X3.4-1963) rather than the later versions of X3.4 or the current ANSI INCITS 4-1986. For instance, the modern caret (ASCII 0x5e, Unicode 0x005e) and underscore (ASCII 0x5f, Unicode 0x005f) characters are not available on the model 33. And the model 33's up arrow and back arrow characters, 0x5e and 0x5f, should be translated to Unicode 0x2191 and 0x2190, respectively. I don't recall whether the model 33 escape key sends the X3.4-1963 escape code, 0x7e, or the modern escape code, 0x1b. In modern ASCII and most ASCII-derived character sets, 0x7e is the tilde character.