[net.micro.pc] PC/IX on an IBM AT, information requested.

mab@mtx5c.UUCP (Michael Brochstein) (05/20/86)

	I am considering the purchase of an IBM AT for program development
using C.  The target environment will also be AT's as well as other
Xenix based supermicros.  I need information from someone who is currently
using a PC/IX (or other version of Xenix) based AT .  My questions are about
PC/IX, its development utlities, and the speed of an AT running multi-user
under PC/IX.

Thank you,

-- 
Michael Brochstein      AT&T Information Systems, Middletown, NJ
ihnp4!mtx5d!mtx5c!mab   (201) 957-1764

mellon@mit-prep.ARPA (Ted Lemon) (05/24/86)

   From: mab@mtx5c.UUCP (Michael Brochstein)
   Newsgroups: net.micro.pc
   Date: 20 May 86 18:21:38 GMT
   Distribution: net


> 	   I am considering the purchase of an IBM AT for program
> development using C.  The target environment will also be AT's as well
> as other Xenix based supermicros.  I need information from someone who
> is currently using a PC/IX (or other version of Xenix) based AT .  My
> questions are about PC/IX, its development utlities, and the speed of
> an AT running multi-user under PC/IX.

	First of all, PC/IX is not the same product as Xenix.   PC/IX
	does not run in protected mode, and is thus not a good idea
	when you are using an AT, although I hear it does work on the
	AT.    I am using SCO system V.  It works very nicely - I
	haven't noticed any slowness compared with MS-DOS, in fact
	quite the opposite.   I suspect that the layout of the hard
	disk directories is better.   I don't run more than two users
	at a time (me and me), however, so I don't know how it would
	stand up in that case.

	The utilities that come with Xenix are complete UNIX, along
	with some MS-DOS related stuff.   The only notable lack is
	that there is no on-line database for man(1).   The MS-DOS
	utilities allow you to read and write from an MS-DOS partition
	on your hard disk drive, or on a floppy.   You can also
	compile and link for an 8086 based MS-DOS system, generating
	an actual MS-DOS .EXE file.   Pretty nifty.   If I didn't have
	so much invested in MS-DOS already, I would be using Xenix
	exclusively.

			       _MelloN_
-- 
Ted Lemon
Project GNU of the Free Software Foundation

UUCP:       {}!mit-eddie!mit-prep!mellon
INTERNET:   mellon@prep.ai.mit.edu
ORGANIZATION: Project GNU, Free Software Foundation,
	      1000 Mass. Ave., Cambridge, MA  02138, USA +1 (617) 876-3296
Also:	      New Media Graphics Corporation
	      279 Cambridge St., Burlington, MA 01803
HOME: 18 Kennedy Drive, North Chelmsford, Massachusetts

herbie@polaris.UUCP (Herb Chong) (05/25/86)

In article <737@mtx5c.UUCP> mab@mtx5c.UUCP (Michael Brochstein) writes:
>	I am considering the purchase of an IBM AT for program development
>using C.  The target environment will also be AT's as well as other
>Xenix based supermicros.  I need information from someone who is currently
>using a PC/IX (or other version of Xenix) based AT .  My questions are about
>PC/IX, its development utlities, and the speed of an AT running multi-user
>under PC/IX.

PC/IX and Xenix are unix sys3 clones but are otherwise different beasts.
Xenix is by Microsoft/SCO.  PC/IX is by Interactive Systems Corporation.

Herb Chong...

I'm still user-friendly -- I don't byte, I nybble....

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========================================================================
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root@ucsfcca.UUCP (05/28/86)

> 
>  ... I need information from someone who is currently
> using a PC/IX (or other version of Xenix) based AT .  My questions are about
> PC/IX, its development utlities, and the speed of an AT running multi-user
> under PC/IX.
> 
PC/IX is not a version of Xenix. It is a System III based port to
the PC/XT and a version was done for the PC/AT but I understand
that IBM decided to market Xenix for the AT instead.

The last I heard there was a release 2 of Xenix for the AT.

Thos Sumner    (...ucbvax!ucsfcgl!ucsfcca.UCSF!thos)

rwwetmore@watmath.UUCP (Ross Wetmore [ICR]) (05/28/86)

In article <543@polaris.UUCP> herbie@polaris.UUCP (Herb Chong) writes:
>
>PC/IX and Xenix are unix sys3 clones but are otherwise different beasts.
>Xenix is by Microsoft/SCO.  PC/IX is by Interactive Systems Corporation.
>
  It is true that the only version of XENIX distributed by IBM is SYS III, 
but MicroSoft/SCO are distributing the SYS V version. Someday the people
at Big Blue will catch on ...

syncro@looking.UUCP (Tom Haapanen) (05/28/86)

In article <543@polaris.UUCP> herbie@polaris.UUCP (Herb Chong) writes:

>>	I am considering the purchase of an IBM AT for program development
>>using C.  The target environment will also be AT's as well as other
>>Xenix based supermicros.  I need information from someone who is currently
>>using a PC/IX (or other version of Xenix) based AT .  My questions are about
>>PC/IX, its development utlities, and the speed of an AT running multi-user
>>under PC/IX.

>PC/IX and Xenix are unix sys3 clones but are otherwise different beasts.
>Xenix is by Microsoft/SCO.  PC/IX is by Interactive Systems Corporation.

Ummm, that used to be true.  Now, what we have is:
	PC/IX, IBM Xenix		System III
	SCO Xenix 5, IBM Xenix 2.0	System V
IBM Xenix is an IBM-ized version of SCO Xenix with a higher price tag.
Xenix was developed by Microsoft for micros, and ported to the PC, AT
and others by SCO (Santa Cruz Operation Inc.).  So, SCO is probably
the best source to get Xenix.

PC/IX is NOT a version of Xenix; rather, it is a port of UNIX Sys3 to PC
(and to VM, as VM/IX) by Interactive Systems (I think).  It has generated
a LOT of negative feedback from users, and is missing Sys5 features, and
essentials such as csh and vi.

UNIX is a registered trademark of AT&T Bell Labs.
XENIX is a registered trademark of Microsoft Corporation.
--
\tom haapanen					looking glass software ltd.
syncro@looking.UUCP				waterloo, ontario, canada
watmath!looking!syncro				(519) 884-7473

"These opinions are solely mine, although even I would like to deny them..."

dts@cullvax.UUCP (Daniel T Senie) (05/30/86)

> In article <543@polaris.UUCP> herbie@polaris.UUCP (Herb Chong) writes:
> >
> >PC/IX and Xenix are unix sys3 clones but are otherwise different beasts.
> >Xenix is by Microsoft/SCO.  PC/IX is by Interactive Systems Corporation.
> >
>   It is true that the only version of XENIX distributed by IBM is SYS III, 
> but MicroSoft/SCO are distributing the SYS V version. Someday the people
> at Big Blue will catch on ...

Do you folk read trade journals?

IBM announced XENIX 2.0 a few months ago. It is equivalent to Microsoft
XENIX 5.0. This is System V Rel. 2 compatible. IBM stopped supporting
PC/IX as of December 1985. I used the AT version: It doesn't work with
an EGA and uses real mode.

IBM is offering an upgrade from PC/IX to XENIX 2.0. They are no longer
selling PC/IX. I am currently using the SCO/XENIX V.2. SCO does NOT have
their act together. They give you phone support for only one month and
then will only entertain requests in writing. For the in writing support,
it's about $100 a year. Phone support runs MUCH higher.

SCO just sent me an update patch to the base system, a beta release of
the compiler, and still has some open questions of mine. Some programs
fail to compile with internal errors in the compiler.

We still have a copy of PC/IX here. I think I'm going to trade it in for
XENIX 2.0 from IBM. Maybe It'll be better. 

One additional note: the binders for the manuals for SCO/XENIX have this
habit of falling apart. I'd switch to IBM just to get better binders...


-- 
Daniel T. Senie                          TEL.: (617) 329-7700 x3168
Cullinet Software, Inc.                  UUCP: seismo!mit-eddie!cullvax!dts
400 Blue Hill Drive                      ARPA: cullvax!dts@eddie.mit.edu
Westwood, MA 02090-2198

jrc@hpcnof.UUCP (06/02/86)

I have heard some version of UNIX for PCs limit programs to 64K of data and
64K of code --- the S (small) memory model.  Any truth to this rumor?

Jim Conrad
{ucbvax,ihnp4}!hplabs!hpcnof!j_conrad

bc@cyb-eng.UUCP (Bill Crews) (06/02/86)

> >PC/IX and Xenix are unix sys3 clones but are otherwise different beasts.
> >Xenix is by Microsoft/SCO.  PC/IX is by Interactive Systems Corporation.
> >
>   It is true that the only version of XENIX distributed by IBM is SYS III, 
> but MicroSoft/SCO are distributing the SYS V version. Someday the people
> at Big Blue will catch on ...

A couple of *months* ago, I saw an IBM Product Announcement that indicated
that the new IBM version of Xenix was System V based.  Since I don't use it,
I don't know the version number or when it {became,will become} available.
-- 
	- bc -

..!{seismo,topaz,gatech,nbires,ihnp4}!ut-sally!cyb-eng!bc  (512) 835-2266

caf@omen.UUCP (Chuck Forsberg WA7KGX) (06/04/86)

In article <342@cullvax.UUCP> dts@cullvax.UUCP (Daniel T Senie) writes:
>
>IBM is offering an upgrade from PC/IX to XENIX 2.0. They are no longer
>selling PC/IX. I am currently using the SCO/XENIX V.2. SCO does NOT have
>their act together. They give you phone support for only one month and
>then will only entertain requests in writing. For the in writing support,
>it's about $100 a year. Phone support runs MUCH higher.

Yes, there are (still) bugs in SCO SYS V Xenix.  The 286 is essentially
hostile to Unix, and I haven't seen a 286 based timesharing system that
isn't crippled by  *today's*  standards.  Only Intel thinks the 286 is
in the same league as 32 bit machines, and they have been rather silent
on the subject since they introdiced the 386.  As Gates himself put it,
the 386 is the chip the 286 should have been.

There are also some hardware cretinisms in the PC-AT that make it hard to
write a reliable and efficient I/O system.  A 386 "compatible" motherboard
won't fix those problems.

>SCO just sent me an update patch to the base system, a beta release of
>the compiler, and still has some open questions of mine. Some programs
>fail to compile with internal errors in the compiler.

SCO gets the compiler upgrades fairly quickly from Microsoft.  If Microsoft
ever gets a correct 286 C compiler, SCO won't be far behind.

>We still have a copy of PC/IX here. I think I'm going to trade it in for
>XENIX 2.0 from IBM. Maybe It'll be better. 

If your beef with SCO is bug fixing response, you'd better talk to some
IBM Xenix users about that subject ...

>One additional note: the binders for the manuals for SCO/XENIX have this
>habit of falling apart. I'd switch to IBM just to get better binders...

I don't particularly care for SCO's binders, but I haven't had any fall
apart.  I have cut notches in the top of the spines so I can use a finger
to pull them out of their boxes without a big fight.
>

   Chuck Forsberg WA7KGX  ...!tektronix!reed!omen!caf   CIS:70715,131
   Author of Professional-YAM communications Tools for PCDOS and Unix
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