Hi Bob,

I was wondering too and found the solution via the link to 
http://thestarman.pcministry.com/asm/asmhelp.zip in the
section x86 Opcodes of http://thestarman.pcministry.com/asm/index.html

CE is the hex code for trap if overflow flag is set (see enclosed pdf).

I admired also your zero byte solution ...

regards
--
  Bernhard 

> -----Original Message-----
> From: BlackBox [mailto:BLACKBOX@LISTS.OBERON.CH] On Behalf Of 
> Campbell, Robert (SELEX GALILEO, UK)
> Sent: Tuesday, October 18, 2011 1:39 PM
> To: BLACKBOX@LISTS.OBERON.CH
> Subject: Re: [BLACKBOX] Overflow checking (was: Type transfer)
> 
> 
> Chris
> 
> I might boast about my assembler prowess (I was inordinately 
> proud of my
> 0-byte effort),
> but your 1-byte example is beyond me.
> 
> Give us a clue: what is 0CEH?
> 
> 
> Cheers
> 
> Robert
> 
> >> ... it might ... useful
> 
> >> PROCEDURE [code] ChkOverflow()
> >> 0CEH;	
> >> 
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