Read chapter 3 of CST -- available on-line (go to BLACKBOARD => LIBRARY => e-reserves => authentication page => user:mae412 password:littman1). Continue studying the 6502 instruction set.

All of this interacts with the Gigatron’s existing video subsystem, and all code can switch in between the Gigatron’s virtual CPU and 6502 code with just a few instructions. This opens the ...

Last month [Some Assembly Required] took on the challenge to recreate a classic computer from the ground up and started with a 6502 implementation ... The ROL instruction is the subject of the ...