Built using digital.exe

Open .dig files using Digital

Download and install Digital from the GitHub releases page: https://github.com/hneemann/Digital/releases

Make sure all files are in the same folder to simulate and analyze the circuit

To add instructions, Start the simulation and click RAM to add instructions.

Mnemonic	Opcode (4-bit)	Operand Description
LDA	0000	Load accumulator from memory at <ADDR>
ADD	0001	Add value at <ADDR> to accumulator
SUB	0010	Subtract value at <ADDR> from accumulator
STR	1101	Accumulator value stored at <ADDR>
OUT	1110	Output accumulator value (operand ignored)
HLT	1111	Halt execution (operand ignored)

eg: To compute 5 + 6 - 3

| Address |  Data  |
| ------- | ------ |
| `0x0`   | `0x09` | → `LDA 0x9` (load value at `0x9` → 5)     
| `0x1`   | `0x1A` | → `ADD 0xA` (add value at `0xA` → 6)      
| `0x2`   | `0x2B` | → `SUB 0xB` (subtract value at `0xB` → 3) 
| `0x3`   | `0xE0` | → `OUT`      (output result)              
| `0x4`   | `0xF0` | → `HLT`      (halt execution)             
| `0x9`   | `0x05` | → data: 5                                 
| `0xA`   | `0x06` | → data: 6                                 
| `0xB`   | `0x03` | → data: 3