| ??? 02/12/02 04:59 Read: times |
#19688 - RE: I summary |
Hal, I changed all components, AT89C52, 74LS573, EPROM. I know my basic system are working good, as minimum the microcontroller is reading the program from EPROM (please see my last post), still no signals at P3.0 ot P3.1.
It`s enough write to SBUF to activate P3.1 TXD pin right ? |



