Ben Eater's 8-bit breadboard computer emulator
| Opcode | Mnemonic | Description |
|---|---|---|
| 0000 | NOP | No Operation |
| 0001 | LDA | Load contents of a memory address XXXX into A register |
| 0010 | ADD | Load contents of a memory address XXXX into B register, then performs A+B and stores the result in A register |
| 0011 | SUB | Load contents of a memory address XXXX into B register, then performs A-B and stores the result in A register |
| 0100 | STA | Store contents of A register at memory address XXXX |
| 0101 | LDI | Load 4 bit immediate value into A register |
| 0110 | JMP | Unconditional jump: sets program counter to XXXX and executes from there |
| 0111 | JC | Jump if carry: sets program counter to XXXX when carry flag is set and executes from there |
| 1000 | JZ | Jump if zero: sets program counter to XXXX when zero flag is set and executes from there |
| 1110 | OUT | Output contents of A register to 7 segment display, in our case, we'll print it on console |
| 1111 | HLT | Halts the execution |