Emulator for 4-bit and 8-bit chips

Features

• Interactive shell

Enter a program in machine code directly into the emulator.

• Run program from a file

Run a machine code program from a file.

• Simple debugger

Debug mode available with the contents of memory and registers displayed at each step in execution.

• Custom assembly langauge

Set of mnemonic symbols to simplify writing programs for the system.

• Simple assembler

Converts a program written in the system's assembly language into machine code.

Details

Assembly language ➔ instruction code

• HALT ➔ 00

• ADD ➔ 01

• SUB ➔ 02

• INC0 ➔ 03

• INC1 ➔ 04

• DEC0 ➔ 05

• DEC1 ➔ 06

• SWP ➔ 07

• PRNT ➔ 08

• LD0 ➔ 09

• LD1 ➔ 0A

• ST0 ➔ 0B

• ST1 ➔ 0C

• JMP ➔ 0D

• JMPZ ➔ 0E

• JMPNZ ➔ 0F

• ASCCHAR ➔ 10