| ??? 08/18/03 18:02 Read: times |
#52809 - RE: AT89s8252 Responding to: ???'s previous message |
OK, so have you got a running crystal ? Have you checked that the reset line is de-asserted ? Does ALE toggle ?
Try ORG 100H MOV p1,#0 JMP $ And see if all P1 goes low. Steve |
| Topic | Author | Date |
| AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 | |
| RE: AT89s8252 | 01/01/70 00:00 |