| ??? 05/02/08 04:31 Read: times |
#154281 - call to IAP is correct Responding to: ???'s previous message |
Thanks David for concern,
I have taken all the precautions that are mensioned in datasheet of 669. necessary registers like AUXR1, A, R1 & EPTR are initialised correctly as per datasheet. For IAP 669 uses EPTR(23 bit) instead of DPTR. Also R2 according datasheet is not needed. If you read my 3 points carefully, you will find that if I try to write 2 bytes where only lower addres differs but higher & middle address are same (remember it is 23 bit address); then the write is incorrect for the second location. also if I write only 2nd byte(ofcourse after erasing the whole 8k), it gets programed correctly. |
| 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| P89C669 is Obsolete Part!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 |