On Sat, Feb 19, 2022 at 3:42 PM Dave Wade <dave.g4ugm@...> wrote:
> -----Original Message-----
> From: [email protected] <[email protected]> On Behalf Of Fish Fish
> Sent: 19 February 2022 20:03
> To: [email protected]
> Subject: Re: [h390-vm] A question about vm/370 print output #VMCE
>
> Dave Wade wrote:
> > Fish wrote:
>
> [...]
> > > I would suggest taking a close look at VM/370's spooler logic.
> > > I'm sure you'll find the bug there somewhere. A bug which was likely
> > > fixed in later versions of VM.
> >
> > Well VM/SP still does it. I suspect its intended behaviour.
> > If I finish my Spanish homework I will have a look.
>
> Before you (or Bob? or anyone else) does so however, you should first
> confirm whether or not it, as I suspect it might, only occurs on the very first
> printout or not, or whether it always occurs on every printout.
>
> If it always occurs, then I can accept that it's expected behavior. If it only
> occurs on the very first printout however, then it's IMO probably a bug.
>
Define "First Print Out". VM has a "shedload" of printer and spool control command.
So you can vary the physical printer on/offline.
You can start, drain and stop the spooler
Then you can change the spooler classes.
It possible that any one of these can trigger the "FF" character.
> Either that or maybe it's (VM/370) trying to send some type of unusual
> undocumented CCW command code/data to the printer that Hercules isn't
> expecting. Maybe some type of special undocumented "reset" command
> perhaps?
>
Could be any one of the above...
> --
> "Fish" (David B. Trout)
> Software Development Laboratories
>
> mail: fish@...
>
