Hooked scope to pins.
There is series of pulses on SCLK and RST gets high and low as specified.
However, there is no activity on serial input/output lines.
To check the wiring, I wrote this simple code:

Code:
krd:
high sclk
high tc
high rst
high fc
pauseus 500
low sclk
low tc
low rst
low fc
pauseus 500
goto krd
And it works fine - I can see square pulses with scope on each pin, so there are no wiring issues.

Any ideas?