Subj : Short executables
To   : Eddy Thilleman
From : David Noon
Date : Wed Jan 31 2001 10:54 am

Hi Eddy,

Replying to a message of Eddy Thilleman to David Noon:

 DN>> Try this [I first posted this code in this echo back in 1998]:

 DN>> HWORLD.ASM  OS/2 32-bit command line program.

 ET> Hmm, maybe I'll try to assemble this, does TASM do the job?

Try this one, if your TASM does only 16-bit code. Just remember to link it with 
OS/2's LINK.EXE and use OS2.LIB from the OS/2 Developer's Toolkit 1.3 [although 
OS2386.LIB in the later DTK's also contains the 16-bit imports, I think].

========================== HWORLD16.ASM ============================
; OS/2 16-bit command line program. Sample of assembler code.
; Copyright: Public domain
           .286
           .MODEL SMALL,PASCAL

           .CONST
MsgText    DB     "Hello, Eddy!"
MsgLen     EQU    $-MsgText

           EXTERN VioWrtTTY: FAR

           .CODE
HelloWorld PROC   NEAR
           PUSH   BP
           MOV    BP,SP

; Call VioWrtTTY to display our message
           PUSH   SEG MsgText
           PUSH   OFFSET MsgText
           PUSH   MsgLen
           PUSH   0
           CALL   VioWrtTTY

; Clean stack area and return
           MOV    SP,BP
           POP    BP
           RET
HelloWorld ENDP

           .STACK

           END    HelloWorld
====================================================================

It works out a couple of bytes smaller than the 32-bit program I posted before 
[44 bytes, compared to 53 bytes]. This is like counting archangels on the head 
of a pin.

Regards

Dave
<Team PL/I>

--- FleetStreet 1.25.1
 * Origin: My other computer is an IBM S/390 (2:257/609.5)

.