| ??? 04/06/11 04:21 Read: times |
#181731 - My port does not do as my program |
Dear all,
I tested this program : MULAI: mov p0,#01H mov p1,#7DH mov p2,#7DH mov p0,#00H mov p1,#7DH mov p2,#7DH jmp MULAI And put it in my chip with no circuit at all on p1 or p2. But the voltage on all those ports are always at 5V. What is wrong with this ? I have put a MAX1232 as a replacement to RC Reset. Thank you all in advance. Best regards, Didik Chandra |
| Topic | Author | Date |
| My port does not do as my program | 01/01/70 00:00 | |
| Tested... | 01/01/70 00:00 | |
| Details of components | 01/01/70 00:00 | |
| How a microprocessor/microcontroller starts... | 01/01/70 00:00 | |
| Just a minute ... | 01/01/70 00:00 | |
| Vectors | 01/01/70 00:00 | |
| Difference between 8051 "Vectors" and ARM "Vectors" | 01/01/70 00:00 | |
| All in a name | 01/01/70 00:00 | |
Sort of | 01/01/70 00:00 | |
| Vectors | 01/01/70 00:00 | |
| There are many ways to skin the proverbial cat ... | 01/01/70 00:00 | |
| placing an entire ISR in the space available | 01/01/70 00:00 | |
| vectors and vectors | 01/01/70 00:00 | |
| Startup | 01/01/70 00:00 | |
| Found the problem !!! | 01/01/70 00:00 |