Arlet / verilog-6502

A Verilog HDL model of the MOS 6502 CPU

A Verilog HDL version of the old MOS 6502 CPU.

Note: the 6502 core assumes a synchronous memory. This means that valid data (DI) is expected on the cycle after valid address. This allows direct connection to (Xilinx) block RAMs. When using asynchronous memory, I suggest registering the address/control lines for glitchless output signals.

Have fun.