| ??? 07/19/11 08:05 Read: times |
#182908 - PSW Responding to: ???'s previous message |
That is a question for the assembler. My guess is the assembler code only defines an EQUate for the address of P (0xD0) and MOVing a value to that address will result in writing to PSW (also at 0xD0). There usually is no type or memory space information in the assembler. |
| Topic | Author | Date |
| a keyboard question AT89C51 | 01/01/70 00:00 | |
| image of circuit | 01/01/70 00:00 | |
| use P0 not P | 01/01/70 00:00 | |
| Parity flag | 01/01/70 00:00 | |
| How do you write a number to the parity flag? | 01/01/70 00:00 | |
PSW | 01/01/70 00:00 | |
| Don't say, "make port 0 input" | 01/01/70 00:00 | |
| port 2 not port 0 | 01/01/70 00:00 | |
| Too simplified view on input/output | 01/01/70 00:00 | |
| Incorrect - look again! | 01/01/70 00:00 |