1-bit microprocessor simulator based on the MC14500B
A microprocessor for decision-oriented tasks. It is well-suited to the implementation of ladder logic, and thus could be used to replace relay systems and programmable logic controllers, also intended for serial data manipulation.
| Binary | Opcode | Operation |
|---|---|---|
| 0000 | NOPO | No change in registers |
| 0001 | LD | Load Result Reg. Data |
| 0010 | LDC | Load Complement Data |
| 0011 | AND | Logical AND |
| 0100 | ANDC | Logical AND Complement |
| 0101 | OR | Logical OR |
| 0110 | ORC | Logical OR Complement |
| 0111 | XNOR | Exclusive NOR |
| 1000 | STO | Store |
| 1001 | STOC | Store Complement |
| 1010 | IEN | Input Enable |
| 1011 | OEN | Output Enable |
| 1100 | JMP | Jump |
| 1101 | RTN | Return |
| 1110 | SKZ | Skip next instruction if result reg=0 |
| 1111 | NOPF | No change in Registers |
https://en.wikichip.org/w/images/3/3e/Motorola_MC14500B_Industial_Control_Unit_Handbook.pdf
https://en.wikichip.org/w/images/5/5b/MC14500B_datasheet.pdf
https://en.wikipedia.org/wiki/Motorola_MC14500B
https://hackaday.com/2020/02/01/what-everyone-else-did-with-eight-bits-the-germans-did-with-only-one/
http://www.righto.com/2021/02/a-one-bit-processor-explained-reverse.html