add audio_codec driver
rename priority_enc to priority_enc24
break floattoint into multiple cycles
call it hex not int
use printf to format int to hex
add inttofloat unit
make sure floattoint is actually on the clock
squash a bunch of warnings
don't put leading tabs in verinit.py output
make sure audio_codec mapping is named
write testbench for inttofloat_tb
priority_enc15 should actually be priority_enc16