This is an in-depth emulator of Ben Eater's 8 bit breadboard computer down to the micro instructions.

Build the project by running make, this creates a 'bb8' & 'eas' executables using g++, as well as the ROM image making use of numpy.

Run the emulator using ./bb8.exe <program file> <clock speed> [(optional)rom file]. It loads 'rom.out' by default.

The makerom python script is based on Ben Eater's arduino EEPROM programmer. Edit the template to add instructions.
When changing the micro-instruction definitions make sure to edit both the python script and 'src/include/microcode.h'.

Running python3 makerom.py outputs the rom image in 'rom.out', unless a different file is specified.

See the readme file for assembler syntax. Run ./eas.exe <source code> [(optional)output path] to assemble your code. If no output path is specified a a.out file will be created.

When the microcode contains no jump if carry, shiftleft.out outputs all zeros once a value greater than 128 is reached:

Meanwhile a working jump if carry will execute in a loop: