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hexcom.pas
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Pascal/Delphi Source File
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1992-01-02
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2KB
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68 lines
(* ******************************************************************** *)
(* HexCom - Load a HEX (Hex dump file) and makes it a COM file. *)
(* Author - Victor Lee , Queen's University, Kingston, Ontario, CANADA *)
(* Network id - VIC at QUCDN *)
(* Date - 1986 Feb 12 *)
(* Note : See ComHex to convert COM file into HEX file. *)
(* ******************************************************************** *)
Program HexCom ;
type blocks = array [1..128] of char ;
S2 = string[2] ;
var
i : byte ;
ComName,HexName : string[14] ;
FN : string[8] ;
REC : string[64] ;
abyte : byte ;
Afile : file of byte ;
Bfile : Text ;
count,Rcount : integer ;
label exit ;
function HexNum(char1,char2:char) : byte ;
var Hi,Low :byte ;
tempbyte : byte ;
begin (* hex *)
Hi := ord(char1) ;
Low := ord(char2);
If Hi > $40 then Hi := Hi + 9 ;
Hi := Hi shl 4 ;
If Low> $40 then Low:= Low + 9 ;
Low := Low and $0F ;
hexNum := Hi + Low ;
end;
Begin (* Com Load *)
Writeln('Enter Name of HEX File to Load into COM file ');
Readln(FN);
ComName := FN + '.COM' ;
HexName := FN + '.HEX' ;
Assign (Afile,ComName);
Assign (Bfile,HexName);
Reset(Bfile);
Rewrite(Afile);
count := 0 ;
Rcount := 0 ;
Writeln('Converting File: ',HexName,' file size =',FileSize(Afile));
Write(' 64 byte record makes 32 bytes . Record count = ');
While Not Eof(Bfile) Do
Begin (* read a record *)
Readln(Bfile,Rec) ;
writeln('rec=',Rec);
i := 1 ;
While i < length(Rec) do
Begin (* load file *)
abyte := HexNum(Rec[i],Rec[i+1]) ;
i := i + 2 ;
write(Afile,abyte);
count := count + 1 ;
End;
Rcount := Rcount + 1 ;
Write(RCount ,' ');
End ; (* read a record *)
exit :
Close(Afile) ;
Writeln('Number of 64 byte records read =',Rcount +1);
Writeln('New file ',ComName,' created. File size is ',count);
End. (* Com Load *)