RE: OPEN in RPGIII

[Jerry Adams <Jerry@xxxxxxxxxxxxxxx>]

Mark,

There were no structured op-codes (IF, DO) on the S/34 - except through Schuette's (sic) RPG II 1/2.

They were added to the /36 when the Advanced/36 models came out (SSP 7?), but they were somewhat crippled.  CAB was never part of IBM's RPG II compilers.

Jerry C. Adams
IBM System i Programmer/Analyst
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-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Mark S. Waterbury
Sent: Thursday, March 04, 2010 8:13 AM
To: RPG programming on the IBM i / System i
Subject: Re: OPEN in RPGIII

Hi, Terry:

IBM System/3 RPG II had only COMP, indicators, GOTO and TAG, and EXSR, 
BEGSR and ENDSR (for "control flow").

With the IBM System/34, IBM added "structured programming" opcodes 
(still calling it RPG II):

    IF - ELSE - END
    DOWxx   - END, DOUxx - END, DO - END
    CASxx

CALL and PARM were added with Systen/36 Release 6 (VASP).

I think CABxx was introduced with System/38 RPG III.

(Anyone else remember those details any better?)

HTH,

Mark S. Waterbury

> Terrence Enger wrote:
> Hmm, this is a real memory test for me, but are you sure that RPG II had
> the CABxx and CASxx opcodes?  I only remember these from RPG III.
>
> CVTRPGSRC, of course, does not claim to work for RPG II.
>
> Cheers,
> Terry.
>
>
>