Hi Sol,

I compiled you sdts2dxf.c conversion utility on my
OS which is VMS running on an Alpha.  I compiled the
fips123 library as well and linked it in to the
above program with the following command:

$ cc/noopt/nowarn/prefix_library_entries=all_entries sdts2dxf.c
$ lnproc sdts2dxf sdts2dxf,f123lib.olb

So this gave me a file called sdts2dxf.exe . Upon execution
I'm prompted for:

Usage: sdts2dxf (4 character base_input_name) (layer id)
(base_output_file)
       input file:  first 4 characters of base file name
       layer id:  the 2 digits in position 7 & 8 of input filename
       output file:  output file without extension 

I'm trying convert a series sdts file I got from US Geodata site.

MIMSAHDR.DDF;1      MIMSAMSF.DDF;1      MIMSBFPC.DDF;1     
MIMSBFPS.DDF;1
MIMSBMSP.DDF;1      MIMSCATD.DDF;1      MIMSCATS.DDF;1     
MIMSCATX.DDF;1
MIMSDDSH.DDF;1      MIMSDQAA.DDF;1      MIMSDQCG.DDF;1     
MIMSDQHL.DDF;1
MIMSDQLC.DDF;1      MIMSDQPA.DDF;1      MIMSFF01.DDF;1     
MIMSIDEN.DDF;1
MIMSIREF.DDF;1      MIMSLE01.DDF;1      MIMSNA01.DDF;1     
MIMSNE01.DDF;1
MIMSNO01.DDF;1      MIMSPC01.DDF;1      MIMSSPDM.DDF;1     
MIMSSTAT.DDF;1
MIMSXREF.DDF;1

I typed in the following command:  $ sdts2dxf mims 01 test

Is that how I should operate your conversion utility?  The 
above command didn't seem to work, do you know why?

thanks,

Anup