The source code in this repository has been developed exploratively, in order to validate and refine the ideas laid out in above document. As such, it is incomplete, may occasionally malfunction, and does not yet provide the fine bone porcelain rendering it usable in anger. It's a prototype, if you wish.
http://en.wikipedia.org/wiki/MOS_Technology_6502
http://www.6502.org/documents/datasheets/mos/
http://www.mdawson.net/vic20chrome/cpu/mos_6500_mpu_preliminary_may_1976.pdf