usage: bas850 [-a|-b|-w|-f] [-t<type>] [-e<esc>] [-l<log>] [-l|-u] [-o] \
              infile outfile
         -a create an ASCII encoded file for Piotr's interface
         -b create a binary file
         -w or -s create a 300 baud WAV file (slow: PB-700, FX-750P)
         -f create a 1200 baud WAV file (fast: FX-850P, PB-1000)
         -2 create FP-200 compatible file
         -t[T|A|B|2|7|8] select type of output
           T: plain text for download via serial or USB interface
           A: SAVE,A output; load with LOAD,A on PB-700/FX-750P/FX-850P
           B: same as -A but creates large blocks: FP-200/FX-850P only
           2: internal format for FP-200
           7: internal format for PB-700 family
           8: internal format for FX-850P/PB-1000 family
         -e[F|P] backslash escape syntax used
           F: FX-850P/VX/Z extended character set
           P: PB-700/PB-1000/FP-200 graphics character set
         -l[F|P] handling of LOG/LN versus LGT/LOG
           F: convert to FX-850P/VX/Z logarithm syntax LOG and LN
              use with -t8 to translate PB-1000 programs
           P: convert to PB-700/PB-1000/FP-200 logarithm syntax LGT and LOG
         -l allow lowercase keywords and variables for FX-850P/PB-1000/FP-200
         -u make everything uppercase for FX-750P
         -o replace old style keywords like PRT, VAC or CSR
