This week on the blog: the latest release of my Ophis assembler hit an ugly corner of 6502 assembly language syntax (Z80 has it too, x86 and m68k don't), and that turns out to be a good excuse to drop a couple of thousand words on parsing theory.

Also, the Bison parser generator is cooler than it was the last time I looked at it.

https://bumbershootsoft.wordpress.com/2026/04/04/some-subtleties-when-parsing-6502-assembly-language/

#6502asm #parser #assembly