Question about ret.

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Joined: 26 Sep 2006
Posts: 92

2 18 Dec 2006, 02:57

I assembled this DOS program.

Code:

org $100                 ;start at RAM 100
mov ah,2                 ;putchar call number
mov dl,$32               ;ASCII code of character to write
int $21                  ;run call set by ah
ret

And it seemed to terminate the program using ret just as well as int $20.
Is it good practice to do this? It worked fine under NTVDM and DOSBOX.

It's also 1 byte smaller when I use ret instead of int $20.

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18 Dec 2006, 02:57

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8466
Location: Kraków, Poland

Tomasz Grysztar 18 Dec 2006, 09:42

http://board.flatassembler.net/topic.php?p=34476#34476

18 Dec 2006, 09:42

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