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A JavaScript 65816 Microprocessor Emulator
17 Commits 2 Branches 0 Tags 300 KiB
JavaScript 97.7%
CSS 2%
HTML 0.3%
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Preston Skupinski 3c4e7264cf remove unnecessary false parameter from function call
2011-05-02 19:02:55 -04:00
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cpu.js added JMP absolute indirect and repositioned the incrementing of the program counter so the program counter doesn't incorrectly increment after a branch or jump and increments at the correct time anyways 2011-05-02 18:10:17 -04:00
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README remove unnecessary false parameter from function call 2011-05-02 19:02:55 -04:00
TODO

README 

This project's goal is to fully emulate the 65816 microprocessor in JavaScript.  It would be awesome if at some point it could emulate an entire system such as the SNES, but that is something to consider later on. 

At the moment many memory loading and storing operations are working, but there are still 200+ operations to go.

You call the execute function of the cpu object with a raw hex string representing the program you wish to emulate and it will execute those instructions as close to the 65816 as possible.

Short examples to try out:

var cpu = new CPU_65816();

cpu.execute("18fba9ff0185ff64ffa5ff");

cpu.r.a should be 0 after executing this.

cpu.execute("18fba9ff01a0010099fea5ff");

cpu.r.a should be 511 after executing this.