| ??? 05/01/08 12:47 Read: times |
#154259 - Are you calling IAP correctly. Responding to: ???'s previous message |
I have never done IAP programming. I have not read the '669 data sheet.
With the P89C51Rx2, you set up R1,R2,DPTR to erase a flash sector. Then you set up R1,R2,DPTR to write each program byte with ACC. Most importantly you check the return value in ACC for success. Your symptoms look like you are not erasing the block first. You will have to read the '669 data sheet carefully and follow the recommended procedure. David. |
| Topic | Author | Date |
| HELP needed for IAP | 01/01/70 00:00 | |
| Duplicate | 01/01/70 00:00 | |
| both are posted by me | 01/01/70 00:00 | |
| Yes - that's what makes them duplicates! | 01/01/70 00:00 | |
| Wrong | 01/01/70 00:00 | |
| what actually needed is help | 01/01/70 00:00 | |
| OK but how can we help you? | 01/01/70 00:00 | |
| P89C669 is Obsolete Part! | 01/01/70 00:00 | |
| Are you calling IAP correctly. | 01/01/70 00:00 | |
| call to IAP is correct | 01/01/70 00:00 | |
| Are the FLASH pages.... | 01/01/70 00:00 | |
| PROBLEM SOLVED | 01/01/70 00:00 | |
| 256? | 01/01/70 00:00 | |
| I found the IAP library | 01/01/70 00:00 | |
| That's OK, just... | 01/01/70 00:00 | |
NO David | 01/01/70 00:00 |