Hollerith code - used to have a template to read the punched cards that didn't 
have the characters printed along the top ( above each punched column )



Bruce Lightsey
Database Manager
MS Department of Information Technology Services
601-432-8144 | www.its.ms.gov

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-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of R.S.
Sent: Tuesday, June 2, 2020 9:20 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Punched cards and character set

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.

--
Radoslaw Skorupka
Lodz, Poland





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