| ??? 06/13/07 13:48 Read: times |
#140665 - OK, We're on to something.... Responding to: ???'s previous message |
Jan,
I just tried to run the same V51 device that had been programmed internally with the "known good" EPROM in an external configuration. Lo and Behold, it does not work. If I install a new un-programmed V51, it will run. Same board, same mods, etc... I have not guessed why this might happen. Can you please enlighten me?? I do not have an electronic version of the board schematic. This is a VERY old priduct that I am trying to patch up to get a little more time out of. Your help with this is appreciated! Bryan |
| Topic | Author | Date |
| 89V51 Code running from FLASH vs EPROM | 01/01/70 00:00 | |
| faulty code | 01/01/70 00:00 | |
| timing? | 01/01/70 00:00 | |
| I need some shematics and programe code using asm | 01/01/70 00:00 | |
| 89V51 Code running from FLASH vs EPROM | 01/01/70 00:00 | |
| hummm.... | 01/01/70 00:00 | |
| OK, We're on to something.... | 01/01/70 00:00 | |
| questions | 01/01/70 00:00 | |
| OK, then don't switch on the /2 flag! | 01/01/70 00:00 | |
| /2 Flag | 01/01/70 00:00 | |
| and the code security flag? | 01/01/70 00:00 | |
| PLM51 Question. | 01/01/70 00:00 | |
| TWO WRONGS | 01/01/70 00:00 | |
| I am still not convinced... | 01/01/70 00:00 | |
| Still a Problem, but........ | 01/01/70 00:00 | |
| P89v51 does have some differences | 01/01/70 00:00 | |
had to wait 5 minutes on someone | 01/01/70 00:00 |