I'm trying to let the external databus work on my 9S12S256 device, but it doesn't work.
I want to acces external data in the paged bank. 8000 - C000 on PPAGE 0.
After start-up I set the mode register directly
MODE = 0xE0;
PEAR = 0x0C;
MISC = 0x01;
EBICTL = 0x00;
With this settings, the bus doesn't work. When I measure with the scoop, my clock seems to be OK. I don't see a R/W pulse.
My function is running in the common bank 0xC000 - 0xFFFF.