I am attmepting to use FB_R/W (PTC11) for an external device on the K70 TOWER. I can not get it to toggle. The R/W line goes high once and stays high. It looks like something is pulling it high because I can see it trying to READ by small pulses on top of the existing HI signal. The only other thing connected to that, as far as the schematic is concerned, is the 29F flash part on the board. I have disabled that removing the 0 ohm jumper and pulling the CS line high for the 29F.
Bus cycle termination error?
Any thoughts form people using the R/W line successfully?