Z80 REPL

5 comments

• flyinghamster 0 minutes ago
  The one thing I lamented about the Apple II Plus (vs. the original with Integer BASIC) was that to make room for autostart, they had to rip out the mini-assembler in the Monitor ROM. That was the closest thing I ever saw to an assembly-language REPL before this. At least they were able to keep the disassembler.
• jottinger 7 minutes ago
  The source code for this is apparently 8 years old: https://github.com/abagames/z80-repl

  With that said, I love the idea.
• networked 40 minutes ago
  Cool idea! The REPL needs to handle whitespace after an instruction with no operands:

    > ld c,20h
    0E 20   (7 cycles)
    > ld c,20h [<-- trailing space here]
    0E 20   (7 cycles)
    > nop
    00      (4 cycles)
    > nop [<-- trailing space here]
    unknown instruction: nop
  

  I also wish I could select from the completion list with Tab without typing more of the instruction, fish-style. I.e., you press Tab to go through completion 1, completion 2, ..., completion N, completion 1 again with Enter to confirm your pick.
• j4cobgarby 35 minutes ago
  Really nice! Would be fun if there were a few examples that could be loaded into memory
• Marbleferry815 23 minutes ago
  [dead]