8 character labels -- There are a lot of labels in IBM macros that are
longer
than 8 characters. For myself, I like longer labels. I find it easier to
read and
understand.
Well, obviously, it goes without saying that there's not much you can do
about other programmers' DSECTs, etc. Unfortuately, once you opt for
longer labels, there's an increased likelihood that instructions will have
to
be continued. Readability? I find with good planning, eight character
names can still be quite descriptive. Having said that, there are some
classic non-descriptive names. For example, within IHAWQE there are
about one thousand labels that all seem to be anagrams of each other. ;-)
Register equates -- I find a lot less value in them now that the assembler
will
tell you about all the places where a register was used, regardless of the
equates.
Agreed, and I'm all for using the assembly listing to its fullest. However,
I think it comes back to readability. After using register equates for
forty
years, instructions just don't look right without them.
And, by the way, I never stopped using the comma between index and
base registers, so I never had to restart when AR-mode came along.
Good practice never goes out of style.
From: Tom Marchant <[EMAIL PROTECTED]>
Reply-To: IBM Mainframe Discussion List <[email protected]>
To: [email protected]
Subject: Re: Calling a AMODE 31 program from AMODE 64
Date: Thu, 23 Aug 2007 12:49:31 -0500
On Thu, 23 Aug 2007 13:18:13 -0400, J R wrote:
>Call me old fashioned but I still write all my code in upper case,
>still limit label names to eight characters, and still use register
equates.
Upper case -- ok. Doesn't bother me either way. You have to be real
careful
about using lower case in macro operands, though.
8 character labels -- There are a lot of labels in IBM macros that are
longer
than 8 characters. For myself, I like longer labels. I find it easier to
read and
understand.
Register equates -- I find a lot less value in them now that the assembler
will
tell you about all the places where a register was used, regardless of the
equates.
--
Tom Marchant
_________________________________________________________________
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