| ??? 04/02/07 22:42 Read: times |
#136452 - MOVC is external with /EA low Responding to: ???'s previous message |
With /EA low, then the MOVC instruction should always be external.
With /EA high, and if you have less than 64K of program storage, then the MOVC instruction will be internal for the internal code, and external for the external code. With /EA high, and if you have 64K of program storage, then the MOVC instruction will be internal. The security bits can block the MOVC instruction and the execution of external code. |
| Topic | Author | Date |
| MOVC question | 01/01/70 00:00 | |
| what derivative? | 01/01/70 00:00 | |
| Re: MOVC question | 01/01/70 00:00 | |
| MOVC is external with /EA low | 01/01/70 00:00 | |
| Eureka! | 01/01/70 00:00 | |
| You are correct | 01/01/70 00:00 | |
| Derivative dependent | 01/01/70 00:00 | |
| I'm a classical sort of guy | 01/01/70 00:00 | |
| I think it is irrelevant to discuss derivatives... | 01/01/70 00:00 | |
| not discussing such | 01/01/70 00:00 | |
| for example DS89C4x0? | 01/01/70 00:00 | |
| yup | 01/01/70 00:00 | |
| Blast from the past | 01/01/70 00:00 | |
| this is how it works with an unlocked AT89C52 | 01/01/70 00:00 | |
| Nice work | 01/01/70 00:00 | |
miniLA | 01/01/70 00:00 | |
| an answer | 01/01/70 00:00 |