Debugging.  THe problem is a call in the cycle after a return. Need to redesign
StackReg
works again
comment out displays and cycle counter
change to first 20 fibs
Merge branch 'master' of github.com:cambridgehackers/xbsv
attempt to support returns in consecutive cycles
remove FIBSTATE4, which should no longer be needed
add vars to docall.  This will permit call following the cycle after a return
but seems expensive.  Can arguments be optional?  Or should there be two versions
of docall?
remove FIBSTATE2a as no longer needed
fix docall prototype in interface claue
remember to save vars!
Fix bug in new vars push
works now
move StackReg from examples/fib to lib/bsv because I want to use
it in maxcommonsubseq
cleanup, remove note indication
remove note indication
update for Fibwide.  Keep explanation of Fib
some more tweaks to imageon pin constraints
fmc_video_clk1 and include rest of imageon portals
first step towards generating constraints for either fmc1 or fmc2
Looking at the most recent version of imageon from before PS7 refactoring, it appears it was using spi_invertedClock