8bit breadboard computer simulator
This is an assembler + simulator/emulator of Ben Eater’s 8bit breadboard computer.
Write your test program in assembler and run it through the simulator.
python simulator.py test.asm
If you want a closer look at the assembler output:
python assembler.py test.asm
Programming the computer using assembly language
Supported assembler instructions:
nop No operation lda # Load memory contents at # into register A add # Add memory contents at # to register A sub # Subtract memory contents at # from register A sta # Store contents of register A at memory location # ldi # Load the value # into register A jmp # Jump to memory location # jc # Jump to memory location # if the carry flag is set jz # Jump to memory location # if the zero flag is set out Output contents of register A hlt Halt the CPU, end of program
The assembler also supports writing raw values with
db and labels:
; ; Test program that adds two numbers ; lda a add b out hlt a: db 28 b: db 14