setTimer() - move part of refresh into function to make easier to read
benchmarkOE - wrap in functions
inline updateDisplay; fix bug that limited to 7 displays
benchmat - display percent processor use (rather than percent change)
fix timer max (32 bit timers)
Update min refresh constants - since inlined displayUpdate
Simplify control of which data output code to use
updateDisplay - switch test order - plane 1 vs. plane 0

Less time is available for outputting plane 1 (while plane 0
is displayed) than for any other plane.
Checking for plane 1 first saves some time - having to load nPlanes and
compare and make a jump on compare failure.
ROW_SPEEDUP - faster output row addresses
updateDisplay - move timer set to before conditionals
use SELECT_DATAOUT - for Tiva Connected refresh speed
Timer offset, min times for connected LP