Inaccessible CP/M programs in Altair32

From: Sipke de Wal <sipke_at_wxs.nl>
Date: Mon Nov 26 01:33:02 2001

ZCPR2 & 3 (CP/M extensions) even allowed
for 32 USER levels (0 .. 31)

Sipke de Wal
-------------------------------------------------
http://xgistor.ath.cx
-------------------------------------------------

----- Original Message -----
From: Jim Battle <frustum_at_pacbell.net>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, November 26, 2001 7:51 AM
Subject: Re: Inaccessible CP/M programs in Altair32


> Good point --
>
> to flesh it out a bit more, there could be up to 16 different "user" areas
> on the disk, which go from 0 to 15. Files were tagged with a nibble
> indicating which user area the file belonged to.
>
> To change user areas, type:
>
> USER 1
>
> to change to user area 1. By default you are in user 0. Changing to each
> user area and typing "dir" to see if anything is there is a drag. To find
> out which, if any, user areas have active files, type:
>
> STAT USR:
>
> and it responds with something like:
>
> Active User: 0
> Active Files: 0 1
>
> to indicate you are currently in user 0 area and that user areas 0 and 1
> have files in them.
> (confirmed on *my* CP/M emulator!)
>
>
> At 10:18 PM 11/25/01 -0800, you wrote:
> >I'm not an expert in Altair CP/M but I do remember one other aspect. It
> >wasn't password protection but I do remember the concept of differnt user
> >#'s. It wasn't complicated but somthing like user #'s 1-8. Once you
> >were that user I seem to remember only the files belonging to that user
> >showing up...
> >
> >Might be a dead end... Just a thought...
> >
> >George Rachor
> >
> >=========================================================
> >George L. Rachor Jr. george_at_rachors.com
> >Hillsboro, Oregon http://rachors.com
> >United States of America Amateur Radio : KD7DCX
> >
> >On Sun, 25 Nov 2001, Jim Battle wrote:
> >
> > > At 10:06 PM 11/25/01 -0500, you wrote:
> > > >Hi:
> > > >
> > > > I'm making progress with using CP/M under Altair32, but I have
> > > > one newbie
> > > >question since I don't have much experience with CP/M.
> > > >
> > > > The disk image I have shows one program in the directory,
> > > > STAT.COM. Running
> > > >STAT tells me that there is about 167k free (on a 330k disk). Looking
> > at the
> > > >disk image file with a hex file editor reveals that there's more
> > programs on
> > > >the disk.
> > > >
> > > > I seem to remember something about password protection on a CP/M
> > > > disk. How
> > > >do I get around this so that I can see what else is on this image?
> > >
> > > It isn't password protection. Files can be marked as "system" files, so
> > > that they don't show up when you do a "DIR". I think "STAT *.* $DIR" will
> > > revert all hidden files back to normal.
> > >
> > > -----
> > > Jim Battle == frustum_at_pacbell.net
> > >
> > >
>
> -----
> Jim Battle == frustum_at_pacbell.net
>
Received on Mon Nov 26 2001 - 01:33:02 GMT

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