| ??? 07/08/06 11:10 Read: times |
#119850 - my first P89C668 is dead Responding to: ???'s previous message |
So my conclusion:
There is no 100% safe way to develop your own custom bootloader. The szenario seems to be the following: The emergency exit routine starts the Philips bootloader and I started FlashMagic to reprogram a new custom bootloader. Just in this moment VCC was interrupted uninentionally. I think, that FlashMagic has already erased the bootvector but not reprogrammed to the 0xFC value and thus now the bootvector point into the nirwana forever. Please watch, that whenever you start FlashMagic, any bootvector different to 0xFC was erased and reprogrammed to 0xFC without any choice !!! The reasond, why I must switch from Atmel to Philips was, that my current project need 6kB SRAM. Peter |
| Topic | Author | Date |
| P89C668 emergency exit | 01/01/70 00:00 | |
| just a question | 01/01/70 00:00 | |
| Re "funny pin levels" | 01/01/70 00:00 | |
| the "funny pin levels" is the only time | 01/01/70 00:00 | |
| NoTouch can not help | 01/01/70 00:00 | |
| I mentioned NoTouch to show that there i | 01/01/70 00:00 | |
| P89C51RD2 | 01/01/70 00:00 | |
| Boot Vector | 01/01/70 00:00 | |
| Re: P89C668 emergency exit | 01/01/70 00:00 | |
| it works not yet !!! | 01/01/70 00:00 | |
| try it manually | 01/01/70 00:00 | |
| Now it works ! | 01/01/70 00:00 | |
| my first P89C668 is dead | 01/01/70 00:00 | |
| P89C668 EOL | 01/01/70 00:00 | |
| P89C66x to P89V66x migration | 01/01/70 00:00 | |
| Iasked a contact I have at Philips and he had no a | 01/01/70 00:00 | |
| V668 | 01/01/70 00:00 | |
| 668/669 EOL | 01/01/70 00:00 | |
| there are others | 01/01/70 00:00 | |
BV | 01/01/70 00:00 |