| ??? 07/18/11 03:21 Read: times |
#182876 - use P0 not P Responding to: ???'s previous message |
Hi Ahmed,
One of the first lines of code should have given you a compiler error. You specified P instead of P0. Regards, Bert ...insert code hereORG 00H MOV P,#0FFH ;make port 0 input |
| 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 |