I prefer ITS DDT (aka HACTRN), with its built-in PDP-10 assembler and disassembler, that lets you do things like your login file customizing your prompt in asse

I prefer ITS DDT (aka HACTRN), with its built-in PDP-10 assembler and disassembler, that lets you do things like your login file customizing your prompt in assembly code to print the time by making system calls, without actually spawning any sub-jobs to merely print the time: https://gunkies.org/wiki/ITS_DDT_Guide https://gunkies.org/wiki/ITS_DDT_Guide ..PROMPT holds the instruction which DDT uses to type out a "*". You can replace it with any other instruction. To use "%" instead of "*", deposit $1#%$> in that location ($> to avoid clobbering the opcode without having to know what it is) If you have to use arcane syntax and grawlix profanity, you should at least have direct efficient access to the full power of the CPU and operating system. https://en.wikipedia.org/wiki/Incompatible_Timesharing_System https://en.wikipedia.org/wiki/Incompatible_Timesharing_Syste... https://en.wikipedia.org/wiki/Dynamic_debugging_technique https://en.wikipedia.org/wiki/Dynamic_debugging_technique https://web.archive.org/web/20061011004003/http://www.sigfs.org/its-reference/its-reference-1.5.html#tth_chAp7 https://web.archive.org/web/20061011004003/http://www.sigfs.... https://its.victor.se/wiki/luser https://its.victor.se/wiki/luser https://www.hactrn.net/sra/alice/alices.pdp10 https://www.hactrn.net/sra/alice/alices.pdp10 https://gunkies.org/wiki/Incompatible_Timesharing_System https://gunkies.org/wiki/Incompatible_Timesharing_System (I recognize that photo I took of MIT-MC at the MIT-AI Lab!) https://gunkies.org/wiki/File:Mit-mc.jpg https://gunkies.org/wiki/File:Mit-mc.jpg Even the Apple ][ Integer Basic monitor ROMs had a build-in mini assembler and disassembler. https://www.ldx.ca/notes/apple2-notes.html https://www.ldx.ca/notes/apple2-notes.html