A commented disassembly of Hyper Sports 2, Konami's RC-717 for the MSX: a 16 KB cartridge that maps into page 1 (0x4000-0x7FFF). It reassembles into the exact ROM, byte for byte, and every one of its 16,384 bytes is accounted for.
No repository ships the game. Put your own dump in the root as hypersports2.rom, 16384 bytes, sha256
f4273f5290edb8b55a319bdfc40d99c0f7863a4cbd93b75519508cb129d288f6make comprueba checks it.
make trace the flow, build the listing, reassemble it, run the tests
make verify the test that decides: reassembling has to give the ROM back
make sanity that not one byte is left unexplained, and no data reads as code
make densidad how much is commented, routine by routine
make textos read the cartridge's texts, which are tile lists and not ASCII
make web rebuild this website from the ROM and the notesThe listing is not hand-edited. tools/mkasm.py builds it from a flow trace and a file of notes anchored to addresses, so the comments survive a re-trace:
src/hypersports2.entries — the entry points the tracer cannot deduce on its own: the interrupt hook, the ten inline dispatch tables, and the four return addresses this cartridge pushes on the stack instead of calling. Each one has its reason written next to it.src/hypersports2.nocode — the ten word tables glued right behind their call. A tracer that walks straight through them eats them as instructions and reports coverage it has not earned.src/hypersports2.notes — one line per annotation: L names a routine, C comments an instruction, B a block, D a data range and F the width of a record inside it.make sanity prints the budget: 6,956 bytes of traced code and 9,428 bytes of data in named ranges, 0 unexplained, 16,384 in total. make densidad prints the comment density: 3,680 instructions, 837 line comments, 22.7%, and not one routine below 10%.
Every figure on this site comes from those two commands, not from an estimate.