| ??? 09/05/02 20:38 Read: times |
#28669 - RE: Strange problem about internal ram test |
The 89C668 has 8K of onboard RAM, comprising of lower 128 bytes directly addressable, 128 bytes of SFR directly addressable, upper 128 bytes indirectly addressable, and 7k + of Extended RAM addressable only with MOVX.
I think you are trying to access the upper 128 byte block with MOVX. To access indirect RAM you need to use (for example) MOV @R0,A. Hal |
| Topic | Author | Date |
| Strange problem about internal ram test | 01/01/70 00:00 | |
| RE: Strange problem about internal ram test | 01/01/70 00:00 | |
RE: Strange problem about internal ram test | 01/01/70 00:00 |