| ??? 12/09/02 16:46 Read: times |
#34073 - MON51 and LCD |
I am using Keil's MCBx51 evaluation board which comes with Mon51 on EEprom.
I am trying to interface a P89C662 with an LCD. I am using the example in Mazidi's book. The RS, R/W, E pins of the LCD are attached to P2.0, P2.1, P2.2 respectively. When I try to use the Keil Monitor-51 driver to do on chip debugging, P2 never changes so I cannot even initialize the LCD. The P89C662 has 32K flash so I am not using any external memory. So I should be able to use P2 and P0 as I/O ports. But for some reason I can't!!! Am I hosed, I cannot run Mon51 and use an LCD at the same time? |
| Topic | Author | Date |
| MON51 and LCD | 01/01/70 00:00 | |
RE: MON51 and LCD | 01/01/70 00:00 |



