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- { Utility to scrub the extra nybble from the 36-bit SIMTEL20 word. }
-
- program scrub_zeros;
-
- var infile : file;
- outfile : file;
- buf : array[1..9] of byte;
- in_count : word;
- out_count : word;
- p : integer;
-
- begin
- if (ParamStr(1)='') or (ParamStr(2)='')
- then writeln('Command : Scrub0 <input.fil> <output.fil>')
- else
- begin
- assign(infile,ParamStr(1));
- reset(infile,1);
- assign(outfile,ParamStr(2));
- rewrite(outfile,1);
-
- blockread(infile,buf,9,in_count);
- while in_count=9 do
- begin
- for p:=5 to 8 do
- begin
- buf[p]:= ((buf[p] shl 4) and $F0)
- or ((buf[p+1] shr 4) and $0F);
- end;
- blockwrite(outfile,buf,8,out_count);
- blockread(infile,buf,9,in_count);
- end;
- if in_count=5 then blockwrite(outfile,buf,4,out_count);
-
- close(infile);
- close(outfile);
- end;
- end.