IHMO, the mnemonic for BCT was not well-chosen.
    Better might have been DBZ
for Decrement and Branch on Zero.

    As for the below case of BALR, clearly, there needed to be yet another 
instruction :-
DWIM
(Do What I Mean)

-----Original Message-----
From: Bernd Oppolzer <bernd.oppol...@t-online.de>
Date: Saturday, 11 February 2012 3:36
Subject: Re: code comments

>My favourite one is:
>
>     BALR  R3,0     SUBTRACT 1 FROM R3
>
>Obviously, the opcode is wrong, should be BCTR.

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