new type of CA for ascii strings

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#275

From: John R. Ehrman (408-463-3543 T/5...
Date: Fri, 22 Sep 2006 17:17

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The easy explanation is that HLASM doesn't support CA terms.

Character self-defining terms are complex. When the assemblers
assumed only code page 037 for input, C'$' meant X'5B'. But we
now have dozens of EBCDIC code pages containing the $ character,
C'$' can have values X'5B' (the HLASM default), X'67', and X'4A'
just among the set of code pages HLASM supports for Unicode
translation.

Many EBCDIC code pages are now used to prepare input for HLASM.
A statement with the term C'$' could contain any of the code
points just mentioned; each has a different ASCII translation.

A possible solution would be to make *all* character terms and
constants subject to translation, but the impact on existing
applications is very difficult to determine.

Your thoughts and suggestions are welcomed.

John Ehrman
    (------------------ Referenced Note Follows --------------------)
Date:         Fri, 22 Sep 2006 15:33:43 +0200
From: Martin <martin@pi-sysprog.de>

To: those that teach HLASM

how do you "sell"/"explain" this to your students?

It is totaly okay to use

     MVI  FIELD,C'A'

to move the EBCDIC constant A to a field

but it is not okay to use

     MVI  FIELD,CA'A'

to move the ASCII constant A to a field.

ASCII is certainly not UNICODE-16.

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From: "John R. Ehrman (408-463-3543 T/543-)" <ehrman@vnet.ibm.com>
Newsgroups: bit.listserv.asm370
Subject: new type of CA for ascii strings
Date: Fri, 22 Sep 2006 10:17:15 -0700
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