Based off the Overture Architecture fround in the game “Turing Complete”
The ALU has only 6 instructions which are decided by the 3 least significant bits. xxxxx000: Logical OR xxxxx001: Logical NAND xxxxx010: Logical NOR xxxxx011: Logical AND xxxxx100: Addition of Data_0 + Data_1 xxxxx101: Subraction (Data_1 - Data_0)
The ALU should perform the logical and arithmetic operations as stated by the coressponding instructions above.
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | i_instruction //ALU instruction, 8 bit wide input | o_result //ALU data output, 8 bit wide | none |
| 1 | i_data_0 // Data input 0, 8 bit wide input | n/a | none |
| 2 | i_data_1 // Data input 1, 8 bit wide input | n/a | none |
| 3 | n/a | n/a | none |
| 4 | n/a | n/a | none |
| 5 | n/a | n/a | none |
| 6 | n/a | n/a | none |
| 7 | n/a | n/a | none |