Refactor cpu memory access and instruction decoding - Githubissues

martinlindhe / dustbox-rs

DOS emulator (semi-abandoned)

https://martinlindhe.github.io/dustbox-rs/

MIT License

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Refactor cpu memory access and instruction decoding #20

Closed nicklaswj closed 6 years ago

nicklaswj commented 6 years ago

As it stands now, cpu.rs does everything; read/write directly to memory, segment translation and instruction decoding - It's a mess.

The following is work in progress in branch https://github.com/martinlindhe/dustbox-rs/tree/memory_decoding_refactoring

[x] refactor cpu.rs to do only instruction execution
[x] implement mmu.rs to do address translation
[x] implement decode.rs to do instruction decoding and disassembling (for debuggging)
[x] basic (flat) read/write functions in memory.rs