Z80 REPL

Commenters reacted with nostalgia and enthusiasm for the Z80 REPL. flyinghamster compared it to the Apple II Plus mini-assembler he missed after it was removed for autostart, while jottinger and torutofu praised how quickly the REPL restores Z80 “muscle memory.” networked highlighted usability issues and feature requests, reporting a bug where trailing spaces can make otherwise valid instructions parse as unknown and asking for fish-style Tab cycling through completions. j4cobgarby suggested ready-made memory examples to try, and jottinger noted the project’s age after pointing to the source repository.

Others brought historical and technical context: EvanAnderson recalled confusion when Apple II-era books didn’t match the IIe he used, and abecedarius argued that the Applesoft BASIC licensing helped stifle alternatives like MacBASIC. boomlinde connected the conversation to Commodore practices, describing freezer cartridges that invoke monitors and explaining they typically include assemblers/disassemblers; he said he’d been curious how those cartridges redirect interrupts and linked to an article detailing how The Final Cartridge 3 implements the mechanism.