run6502, lib6502 — 6502 microprocessor emulator

run6502 command emulates the execution of a 6502 microprocessor. It creates a memory image from the contents of one or more files on the command line and then simulates a power-on hardware reset to begin execution.

The emulator provides two system models:

An embedded 6502 processor with 64 kilobytes of RAM, no memory-mapped hardware, and no input-output capabilities.
An Acorn 'BBC Model B' hardware with 32 kilobytes of RAM, 16 kilo- bytes of paged language ROMs, and 16 kilobytes of operating system ROM. A few MOS calls are intercepted to provide keyboard input and screen output via stdin and stdout.

Limited interaction with the former is possible; see the manual page for details.

lib6502 is a C library that provides the actual emulation. A program can use it to create and execute any number of 6502 processors simultaneously.

Download the source code: lib6502-1.0.tar.gz
Browse the source code: lib6502-1.0
Read the manual pages: run6502.1.html, lib6502.3.html

lib6502 is distributed under the MIT license: it will not infect your project with a contagious disease the instant you decide to use it.

If you find bugs or have suggestions, please send them to Ian at the domain name of this web site. Thanks!