Port 0 Output Modification Register
| PS0 | Port 0 Set Bit 0 |
| PS1 | Port 0 Set Bit 1 |
| PS2 | Port 0 Set Bit 2 |
| PS3 | Port 0 Set Bit 3 |
| PS4 | Port 0 Set Bit 4 |
| PS5 | Port 0 Set Bit 5 |
| PS6 | Port 0 Set Bit 6 |
| PS7 | Port 0 Set Bit 7 |
| PS8 | Port 0 Set Bit 8 |
| PS9 | Port 0 Set Bit 9 |
| PS10 | Port 0 Set Bit 10 |
| PS11 | Port 0 Set Bit 11 |
| PS12 | Port 0 Set Bit 12 |
| PS13 | Port 0 Set Bit 13 |
| PS14 | Port 0 Set Bit 14 |
| PS15 | Port 0 Set Bit 15 |
| PR0 | Port 0 Reset Bit 0 |
| PR1 | Port 0 Reset Bit 1 |
| PR2 | Port 0 Reset Bit 2 |
| PR3 | Port 0 Reset Bit 3 |
| PR4 | Port 0 Reset Bit 4 |
| PR5 | Port 0 Reset Bit 5 |
| PR6 | Port 0 Reset Bit 6 |
| PR7 | Port 0 Reset Bit 7 |
| PR8 | Port 0 Reset Bit 8 |
| PR9 | Port 0 Reset Bit 9 |
| PR10 | Port 0 Reset Bit 10 |
| PR11 | Port 0 Reset Bit 11 |
| PR12 | Port 0 Reset Bit 12 |
| PR13 | Port 0 Reset Bit 13 |
| PR14 | Port 0 Reset Bit 14 |
| PR15 | Port 0 Reset Bit 15 |