8-bit CPU developed in Logisim following this series of YouTube videos by Dawit Kefyalew.
- A Register
- B Register
- Memory Address Register (MAR)
- Memory Buffer Register (MBR)
- Instruction Register (IR)
- Arithmetic Logic Unit (ALU)
- Program Counter (PC)
Each instruction is represented by a 4 bit opcode and 4 bit address. Each instruction has either one or no operand. Only ADD has no operand.
| Instruction | Code |
|---|---|
| LOADA | 0000 |
| LOADB | 0001 |
| ADD | 0010 |
| STORE | 0011 |