| ??? 09/03/05 15:40 Read: times |
#100544 - fully confused ! Responding to: ???'s previous message |
Adrian Bernard said:
I have read about the MOVX instruction.. that it is used to read program code from external memory.. Absolutely wrong, MOVX can only read or write external data memory. Reading constant data from code memory can only be done by MOVC. Connecting EA to GND simple change the 89C51 to a ROMless 80C31 device. Thus only external code memory was accessed. Peter |
| Topic | Author | Date |
| how to use external memory | 01/01/70 00:00 | |
| two ways | 01/01/70 00:00 | |
| some more details please... | 01/01/70 00:00 | |
EPROM | 01/01/70 00:00 | |
| a bit confused | 01/01/70 00:00 | |
| fully confused ! | 01/01/70 00:00 |