| ??? 12/09/04 01:07 Read: times |
#82793 - DPTR....... Responding to: ???'s previous message |
I'm not too sure of the question you're asking. How is checking if port1 is high related to the use of the DPTR? In the 8051 there is a number of memory spaces: external data (XRAM or XDATA),internal/external code (CODE), SFR (internal peripheral registers like PORT1,timers etc) and internal ram (IRAM,IDATA). for testing if port1 bit 0 is high: jb p1.0,ishigh |
| Topic | Author | Date |
| DPTR for internal code | 01/01/70 00:00 | |
| DPTR....... | 01/01/70 00:00 | |
| Look at Instructions set | 01/01/70 00:00 | |
| DPTR for code memory | 01/01/70 00:00 | |
| Port scanning | 01/01/70 00:00 | |
| DPTR and I/O Ports | 01/01/70 00:00 | |
| Outputting and Inputting Bits | 01/01/70 00:00 | |
| Jump Table? | 01/01/70 00:00 | |
| It can Not | 01/01/70 00:00 | |
| DPTR for code memory | 01/01/70 00:00 | |
| Do the independent bit tests | 01/01/70 00:00 | |
very complex bit testing | 01/01/70 00:00 | |
| Dptr for code memory | 01/01/70 00:00 | |
| JB | 01/01/70 00:00 |