Hi Peter,
- Check for a pullup on the GPIOA net. If it is missing, try adding one.
GPIOA net has pull-high 4.4Komh (3.3V).
- Run ./io r44c r44d r44e r44f If the first byte has some bits unset, I misunderstood the byte order.
stress:/tmp # ./io r44c r44d r44e r44f r0x044c=ff r0x044d=ff r0x044e=ff r0x044f=ff
Rgds, Vinod