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Asked: 2026-05-11T14:23:42+00:00

How can we make a .com file using C/C++? Is it possible? Edit: I

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How can we make a .com file using C/C++? Is it possible?

Edit: I was able to successfully make a com file using darin’s suggestions. But somehow the exe file of the following program cannot be converted to com file. I get the ‘File cannot be converted’ message by exe2bin. I’m using Borland Turbo C++ 3.0. Any suggestions?

#include <dos.h> void interrupt (*oldint65)( ); char st[80] = {'Hello World$'}; void interrupt newint65(void); void main() {     oldint65 = getvect(0x65);      setvect(0x65, newint65);     geninterrupt (0x65);     geninterrupt (0x65);     geninterrupt (0x65);     setvect(0x65, oldint65); } void interrupt newint65( ) {      _AH = 0x09;      _DX=(unsigned int)st;      geninterrupt (0x21); }
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1 Answer

  1. In C, you must compile your program with the TINY memory model. Then you can use use EXE2BIN or a similar program to convert an EXE file to a COM file.

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