Follow up on my Breadboard8mini 8bit cpu emulator
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 <program file> <clock speed> [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 'core/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 <source code> [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:
