Or any machine code routines you wanted to POKE into memory. A suppressed obscure part of my lizard brain secretly wishes I could just code for 8bit computers

Or any machine code routines you wanted to POKE into memory. A suppressed obscure part of my lizard brain secretly wishes I could just code for 8bit computers from the 80s, just with all the modern niceties like text editors, assemblers and emulators etc.