Gentlemen,
First I want to thank you for your explanations, I appreciate it.
It seems I read wrong documentation, that mean the documentation was OK,
but it described older "character sets" than used in S/360 family. I
read many web sites and the most popular description of "IBM code" was
similar to what en.wikipedia shows, also similar to 026 or 029 punch
machines.
Those character set contain 0-9, A-Z and some special characters (like
+#=), but definitely no lowercase alphabetic.
Nevermind I was wrong. Now I see references to full EBCDIC 256
characters. So my questions were based on false assumption and then
irrelevant.
However in the resonses I read several times about "column binary" vs
EBCDIC. What is column binary?
And I sustain query for pictures of JCL statements on the cards. I
collected many card pictures but only one with some // AFAIK incomplete
statement.
What's funny, approx. 21 years ago I was teaching JCL and one of my
student gave me his own job on the cards. Due to other students requests
I i gave them out almost all the cards. Now I have only few, completely
blank (unpunched) cards.
Regards
--
Radoslaw Skorupka
Lodz, Poland
W dniu 02.06.2020 o 16:19, R.S. pisze:
I have never used punched cards, so forgive me my questions.
As far as I know, a character set on punched cards was somehow
limited, so it is not EBCDIC or similar set of 256 characters.
Of course that means some limitations for DD * datasets - if coded on
real punched cards.
Nowadays I'm pretty sure DD * accept every possible character, as any
other dataset (with some exception for delimiter). Note, it is program
independent - this is a change within system (JES2, Interpreter,
whatever).
Q1: how it was in the past? I mean, were the DD * limited to "punched
card" character set? Or it was always full EBCDIC if the job was read
from DASD?
Q2: What about character set on the cards? Was it always one and the
same within S/360 family? I noted there were several character sets,
but as far as I understand those set was for other machines
(Remington, pre-S360 IBM machines, etc.)
Was there any name for card character set? I mean something like "CP
037" or so.
And another question, or rather kind request: Does anynone have JCL
statements on punched cards? I would like to get/download some images
of JOB, EXEC, and DD statements on punched cards. I have a lot of card
pictures, but none with JCL.
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