原帖由 dino_lo 於 2007-6-29 23:33 發表
I will try with J1 and PS change to other position again with LCD_INFO again.
1. I can try the PS tie high or tie low to see the parallel ,serial mode
2 .for J1 (MI) only affect in the para ...
I think we made a big mistake at the very begining. My new finding is:
pin3 is for controlling 6800 (when High), 8080 (when GND),
J1 is for parallel (when high), and serial (when GND)
So I made pin3 GND, J1 high, I can drive it in 8080 parallel mode.
And you made pin 3 GND, J1 low, and can drive it in serial mode.
I just tried:
pin 3 HIGH, and J1 high, and my 6800 parallel mode driver works!
I guess: if you make pin3 HIGH, and J1 low, you can drive it in serial mode (because pin3 actually don't bother) |