[Info-vax] Bliss was Re: Learning VMS application programming

[VAXman- at SendSpamHere.ORG]

In article <lunc03$6ue$2 at dont-email.me>, David Froble <davef at tsoft-inc.com> writes:
>VAXman- @SendSpamHere.ORG wrote:
>> In article <c726b652-f7dd-4fb3-a5a3-d07b2fd2e939 at googlegroups.com>, abrsvc <dansabrservices at yahoo.com> writes:
>>>> If you think finding COBOL programmers is hard what do you think the
>>>>
>>>> availability of MACRO-11 programmers is like?  :-)
>>>>
>>> There are still some of us around...
>>>
>>> I have had people comment about writing/modifying MACRO32 on the IA64 system though.  Nothing like writing "assembler" then using a compiler.  For us old folks, that still seems odd.
>> 
>> At least, it does work and it works quite well. 
>> 
>> FWIW, just the other day I came across a VAX Macro instruction that did NOT
>> behave properly on Alpha but it seems have been corrected on Itanium.  Back
>> on a VAX to verify it, the Alpha is not behaving properly.  On Itanium, it's
>> doing the correct thing.
>> 
>
>You gonna keep us in suspense, or tell us the instruction?  I'd like to 
>do a SEARCH on my code.

The instruction is/was the ACBL.  It was in a section of code involved in
walking a self-relative queue.  If the addend is 0, strange things happen.
Try something like '10$: ACBL R2,#0,R1,10$' with R1=R2 on Alpha and VAX to
see what happens. 

-- 
VAXman- A Bored Certified VMS Kernel Mode Hacker    VAXman(at)TMESIS(dot)ORG

I speak to machines with the voice of humanity.