On Mon, 26 Nov 2001, Jim Battle wrote:
> True, but Rich's emulator is of an Altair -- one with an 8080 in it. ZCPR2
> & 3 were Z80-only affairs, I believe.
If he is running a true emulator, I would presume that he was running
CP/M-1.4 would he not? If that is so, is it not true that user areas
did not come into play until CP/M-2.x?
- don
> I recently picked up Richard Conn's ZCPR book for $10, but I haven't yet
> had time to do more than page through it quickly. It looks like it was an
> interesting system; the author was obviously influenced by unix.
>
>
> At 08:33 AM 11/26/01 +0100, Sipke de Wal wrote:
> >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
> > >
>
> -----
> Jim Battle == frustum_at_pacbell.net
>
>
Received on Mon Nov 26 2001 - 15:50:14 GMT