| ??? 03/12/08 15:20 Read: times Msg Score: +1 +1 Good Answer/Helpful |
#152178 - Methinks you're looking in the wrong place! Responding to: ???'s previous message |
If the code is wrong, and the error Michael Karas pointed out is a very obvious and very serious one, it won't matter whether there's anything wrong with the inards of the chip or not. The wrong code won't work under any circumstances.
If you leave the code as it is, then this MOV DPH, 0X70 ; high address MOV DPL, 0X00 ; lower address won't load the 0x7000 into DPTR, but, rather, will load whatever it finds at 0x0070 into DPH, and whatever's at 0x0000 (probably an 0x02) into DPL. Is that really what you want? If there's preloaded code that's being clobbered, it's because of oversights like this one, and not some arcane defect in the device. RE |
| Topic | Author | Date |
| P89V51RD2 IAP | 01/01/70 00:00 | |
| Sure But Not Sure.... | 01/01/70 00:00 | |
| forget the p89v use at89C51rc2 | 01/01/70 00:00 | |
| But did you try to fix your source? | 01/01/70 00:00 | |
| this is a good reason | 01/01/70 00:00 | |
| Still a mystery to me... | 01/01/70 00:00 | |
| I see your point; yet... | 01/01/70 00:00 | |
| small potatoes | 01/01/70 00:00 | |
| Methinks you're looking in the wrong place! | 01/01/70 00:00 | |
| Too quick to blame the tools? | 01/01/70 00:00 | |
not the issue | 01/01/70 00:00 |