Re: RPG on OS/390

["Mark Allen" <scprideandms@xxxxxxxxx>]

"I have no idea how they do screen I/O using RPG on the mainframe."

Made me think back (shudder!! chills up the spine!!) to the old System 3
days and CCP. What fun add a new interactive program and then have to
re-generate the assignment set(?) so when you restarted the interactive
partition (see the i5 ain't got nuttin, I remember multiple partitions on
the System/3) it could use the "new" program................

great, now i get to go abck to the therapist

On 3/10/06, Simon Coulter <shc@xxxxxxxxxxxxxxxxx> wrote:
>
>
> On 11/03/2006, at 1:27 AM, Jon Paris wrote:
>
> > I think Simon meant RPG III.
>
> Actually I did mean RPG II but in light of your comments I dug out my
> old SAA RPG Reference Summary (SC09-1164-02) from April 1991 which
> applies to V2R1 of IBM SAA RPG/400 and V1 of IBM SAA RPG/390.
>
> Seems it's not as bad as I thought. At least it supports the new
> RPG/400 op-codes for character data. It has no support for externally
> described files nor for work station files. I have no idea how they do
> screen I/O using RPG on the mainframe. No support for composite keys
> either.
>
> For what it's worth here is a list of the features that are NOT
> supported in SAA RPG/390:
>
>         o Various File and Program Error Codes
>         o F-spec:
>                 - WORKSTN files
>                 - Record number for SFILE
>         o F-spec continuation:
>                 - COMIT
>                 - ID
>                 - IGNORE
>                 - IND
>                 - NUM
>                 - PASS
>                 - RENAME
>                 - SAVDS
>                 - SFILE
>                 - SLN
>         o I-specs:
>                 - U1 to U8
>                 - External data structures
>         o C-specs:
>                 - KA to KN, KP to KY
>                 - U1 to U8
>                 - Numeric fields still limited to 15 digits
>                 - Op-code extender N (no lock)
>                 - Format names
>         o O-specs:
>                 - KA to KN, KP to KY
>                 - U1 to U8
>                 - Edit code 5 to 9
>                 - K1 to K8
>                 - Format names
>         o Op-Codes:
>                 - ACQ
>                 - CLEAR *NOKEY
>                 - COMIT
>                 - DSPLY
>                 - EXFMT
>                 - FREE
>                 - KFLD
>                 - KLIST
>                 - NEXT
>                 - POST
>                 - READC
>                 - REL
>                 - ROLBK
>                 - SHTDN
>
> SAA RPG/390 did get support for Graphic data types though and a few
> mainframe-specific file and program error codes.
>
> Regards,
> Simon Coulter.
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