| ??? 04/19/06 14:58 Read: times |
#114529 - location dependent Responding to: ???'s previous message |
however, the "backdoor" is no emergency solution. Emergency is, e.g. when someone @#$%s the programming so that the user program (nor backdoor then) runs correctly.
If you put the suggested test of Tx as suggested IMMEDIATELY where the jump at 0 goes to, you need some very clever "@#$%s of the programming" for the backdoor not to work. This limits "accidents" to one in 10.000 so A pushbutton or two pins for a jumper hurt nothing. is overkill, a cliplead will do just fine in that unlikely case. erik |
| Topic | Author | Date |
| AT89C51ED2 ISP Hardware configuration | 01/01/70 00:00 | |
| from the source | 01/01/70 00:00 | |
| I will try it. | 01/01/70 00:00 | |
| because it would make datasheets books | 01/01/70 00:00 | |
| family documents | 01/01/70 00:00 | |
| Philips is good in this respect | 01/01/70 00:00 | |
| it's not philips | 01/01/70 00:00 | |
| ISP circuit | 01/01/70 00:00 | |
| Manual ISP | 01/01/70 00:00 | |
| use NoTouch | 01/01/70 00:00 | |
| handshake? | 01/01/70 00:00 | |
| yes'es and no's | 01/01/70 00:00 | |
| nos and yes's | 01/01/70 00:00 | |
| location dependent | 01/01/70 00:00 | |
| unlikely? | 01/01/70 00:00 | |
make a .bat file | 01/01/70 00:00 |