Emu6510

Emu6510 is an experimental emulator for the 6510 family of microprocessors found in computers such as the Commodore® 64.

Goals

The project will be developed in four phases:

1. Documented opcode emulation - no undocumented opcodes. - Done.
2. Frequency emulation - throttling down to 1-2 Mhz. - Done.
3. Exact cycle support. In other words if an instruction took 7 clock cycles on a 6510 then it will take 7 clock cycles in the emulator as well. - Done.
4. Undocumented opcodes. - Done.

Currently, the only thing supported is the emulation of the processor itself. The further emulation of an entire machine, such as, say, a Commodore® 64, is still remaining to be done. This may take a while.

The first goal of this project is to emulate a Commodore® 1541/1571/1581 disk drive on an ODROID® H2.

Learning Resources

The following websites were used as excellent resources for learning to write an emulator.

• emulator101.com - 6502 emulator
• the 6502 microprocessor resource
• 6502/6510/8500/8502 Opcodes
• Extra Instructions Of The 65XX Series CPU

References for the 6510 microprocessor

• C64 Programmers Reference Guide starting on page 24 (232)
• MOS 6510 Data Sheet

API Documentation

Documentation of the API can be found here: Emu6510 API