RE: Parm identification routine...

I think that the earliest RPG implementation was on 360 in the 60s although
I did work on an 1130 running RPG in 1977.  The input device was usually a
2540 MFCM.  I don't think that IBM supports a card reader any more - on any
system.

The earliest Rochester RPG implementation was a System/3 mod 2 or 4 or some
such that bore a fairly strong resemblance to a 1620.  The first machine had
some little tiny memory [like 8k] and was pre-announced to support RPG.
Unfortunately, the compiler writers couldn't shoehorn RPG into the tiny
memory.  So the littlest model never saw the light of day.  Those systems
used a 96-culumn square card that didn't even make a good book mark.  I
think that the System 38 supported a 96-column card reader but the 400 never
did.

[Anecdote courtesy of one of the original Rochester RPG developers as told
to me in the late 1970s in at Parts Warehouse Alaska in Anchorage Alaska]

Richard Jackson
mailto:richardjackson@richardjackson.net
www.richardjacksonltd.com
Voice: 1 (303) 808-8058
Fax:   1 (303) 663-4325

-----Original Message-----
From: owner-mi400@midrange.com [mailto:owner-mi400@midrange.com]On
Behalf Of Gene_Gaunt/ReviewWorks@reviewworks.com
Sent: Tuesday, July 11, 2000 7:02 AM
To: MI400@midrange.com
Subject: RE: Parm identification routine...


Steve's DSPPARM program can rout out hidden exit points like the one that
OPM RPG/400 calls when compiling a device type of  ^^^^ (four uppercase
6's) in an F-spec columns 40-43 like the following.

     FINPUT   IF  F      80            ^^^^
     IINPUT   NS  01
     C                     READ INPUT                    LR

Do you think this code makes the compiler return fatal error QRG2013, "The
Device-Type entry is not PRINTER, DISK, WORKSTN, SPECIAL, or SEQ" ?  No,
this code makes the compiler fail with MCH3401, "Cannot resolve to object
CARDFILE.  Type and Subtype X'0201' Authority X'0000' ".

Okay, lets rename Steve's program into CARDFILE in our library list.  Now
compile the OPM RPG/400 again and the compiler fails with CPF6301,
"Intermediate representation of program (IRP) contains 11 errors."

My point here is entertainment (not a bug report, jeez guys) but maybe
another MI400er knows the history of this fossil CARDFILE.


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