Thread View: mod.computers.workstations
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Started by Squonk
Fri, 18 Jul 1986 08:02
Further commentary on the AT&T Unix PC
Author: Squonk
Date: Fri, 18 Jul 1986 08:02
Date: Fri, 18 Jul 1986 08:02
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6328 bytes
In WORKS Digest Volume 6, Issue 20 (Wed 16-May-86) Jonathan Clark
(jhc@mtune.UUCP) replies to my comments and brings up some
interesting points which I comment on herein. Dont get me wrong; I
LIKE the AT&T Unix PC and would seriously consider one at a lower
price.
>> >A few digests ago I requested information on the AT&T Unix PC. I
>> >recieved [sic] 4 responses.
>> I don't think that we ever got this article, and we are pretty
>> well connected. If we didn't get it then half of AT&T didn't get
>> it either.
The article arrived in WORKS Digest, Volume 6, Issue 17 (Wed,
14-May-86). One response was from an AT&T employee who was VERY
happy with his Unix PCs. Two were for the 3B2, which is indeed
another beast.
>> >a sizable sum for the 23M tape backup unit (which is essential),
>> Actually we have found that a mixture of backing up to floppies
>> and via uucp works tolerably well. Most of the disk space is taken
>> up with the supplied software, which needn't be backed up at all.
Scenario: My 67M disk has 10M of Unix 'stuff', say another 5-10M of
database code. I then fill say 30M of the disk with database
entries. If your floppy takes ~330k and you have to back off 30M of
data, you will be wanting a tape backup unit.
>> >and an Ethernet iterface [sic] (I have no evidence one exists),
>> No comment is a comment.
Someday.. The way I understand it, you can get 2 serial ports per
card. If you want a 5 user system you will use up two of your three
card slots. If you need the tape backup will that not take up your
third slot? Where does your network (Ethernet or otherwise) fit in?
Could you 'not comment' on an expansion box?
>> > If you are buying a brand new 40M drive and 1M of 256K parts
>> > (150ns) you might pay half of what AT&T charges (my price
>> > based on prices in the back of BYTE... If these people can
>> > sell this stuff at those prices so can AT&T).
>> Perhaps. Actually you get a new motherboard for the money, and a
>> certified drive and memory, which means that your maintenance
>> contract covers it if/when it breaks. That costs.
Is the cheaper non-AT&T 40M drive in the 7300 that AT&T is willing to
sell me certified and will it be covered by the maintenance contract?
The fact that you need a new motherboard is news to me. Knowing that
256k parts would be coming out (even BYTE suggested AT&T would just
pop in the 256k parts) it seems rather short sighted not to include
that in the design.
>> > -InfoWorld (June 9,1986) has an article. The way I
>> > interpreted the points made in it were thus: AT&T will be
>> > promoting the boxes multiuser ability.
>> True.
The demonstration system I worked with was a 7300 with 1M ram, 20M
disk, and an VT100. When I was on the VT100 I wasnt able to use the
telephone functions to dial out. I also found entering <esc>1 for
function key one to be a minor annoyance. If you want to take
advantage of the graphics and mouse capablities you will need
something a little more advanced than a VT100..
>> > The 6300+ (a 286 machine) will make the 7300 obsolete because
>> > it will run MSDOS and Unix. (Though Id MUCH rather deal with
>> > a 68010 than a 286...)
>> Well the unix pc runs DOS and unix via the DOS card. I have no
>> comment on the perceived market clash between the unix pc and the
>> 6300+.
Check my comment on Ethernet above. You are still limited to three
slots as far as I can tell.
>> >It simply costs FAR too much to be considered competative in the
>> >micro or workstation market, and as my wallet says Im a micro
>> >market buyer I probably wont be using a Unix PC. "Oh well.."
>> > -Stephen Halpin
>> We have to talk philosophy here. The unix pc is aimed towards
>> neither of the markets you mention, but rather towards the office
>> automation and VAR/ISV markets. Both these markets are deemed to
>> be rather less price-sensitive than the ones you name. There are
>> other products which are supposed to compete in the micro and
>> workstation markets. Also the unix pc features a SVID-compatible
>> UNIX, which is supposed to thrill the VAR/ISV market by making
>> programs and packages developed for it easily portable to other
>> SVID-compatible machines.
Im afraid you are right about the targeting of the system. I still
say that for a reduced price it could have sold very well as a
micro..
>> --
>> Jonathan Clark
>> [NAC,attmail]!mtune!jhc
~~~~~~~~~~ <<Flame on>>
Its my less than humble opinion that its a rediculous waste running a
multiuser micro. Silicon is too cheap now to worry about running a
CPU 100% of the time. I can get 68000L8s qty1 for under $10. I can
get 1M of 150ns RAM for under $100 (these out of BYTE). The Unix PCs
most significant resources (graphics and phone interface) arent
REALLY sharable. Why buy a system that shortchanges 4 out of 5 users
when the technology is there to give them a full 'workstation' of
their own.. Check out the July '86 BYTE for a 12.5mhz 68020/68881
card with a meg of memory and two serial ports for $1094. It also
has a socket for the 68851 PMMU. I say that AT&T has the power to
put 5 in a box ($5000), give it a decent sized disk, and 5 'terminal'
(keyboard, mouse, monitor, and graphics hardware w/drivers) units for
the same price of a 3B1 with 5M of ram (not possible) and 4 external
terminals. Maybe Im wrong.
~~~~~~~~~~ <<Flame off>>
-Steve
Please accept these opinions as nothing more than opinions.
~~~~~~~~~~
Squonk@UMass.BITNET Squonk%UMass.BITNET@WiscVM.Wisc.EDU
Yet more commentary on the AT&T Unix PC
Author: jhc
Date: Fri, 25 Jul 1986 02:50
Date: Fri, 25 Jul 1986 02:50
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Continuing the discussion with Stephen Halpin (Squonk@UMass) about the AT&T UNIX PC... I have tried to give some context to my replies. For the scenario described (~30MB of database) one would indeed want a tape backup unit. Forgive my ignorance, is $2K a lot for such an item? Ethernet interface: I hear that this is in beta. Or close to it. No dates yet. Your figures (5-user system = 2 expansion slots taken up) are correct, unless you count 2 users between 1 screen and 2 phone lines. No? I didn't think so. I will happily 'not comment' on an expansion box. Actually I have no idea about any manufacturing plans for such an item. >Is the cheaper non-AT&T 40M drive in the 7300 that AT&T is willing >to sell me certified and will it be covered by the maintenance >contract? The fact that you need a new motherboard is news to me. >Knowing that 256k parts would be coming out (even BYTE suggested >AT&T would just pop in the 256k parts) it seems rather short sighted >not to include that in the design. I was wrong - you do not get a new motherboard. The drive is indeed certified (as far as I am aware AT&T does not make any disk drives). I cannot disagree about the many examples of 'short-sightedness' in the design. >The demonstration system I worked with was a 7300 with 1M ram, 20M >disk, and an VT100. When I was on the VT100 I wasnt able to use the >telephone functions to dial out. I also found entering <esc>1 for >function key one to be a minor annoyance. If you want to take >advantage of the graphics and mouse capablities you will need >something a little more advanced than a VT100.. I have heard of a 'dumb terminal' which looks and feels like a unix pc screen/keyboard but which works transparently. I can't remember whether this is real or not, though. (No, honestly, I really can't!) Re the 6300+ versus the unix pc: Bruce Burger put it very well when he said that the difference between them was that the unix pc was a unix engine that happened to be able to run MSDOS, and the 6300+ was an MSDOS engine which happened to be able to run unix. Having used both fairly extensively I would agree. >I still say that for a reduced price it could have sold very well as >a micro.. By 'micro' *I* mean something like an Apple 2 or some other home and games-oriented system. The daughter of a friend of mine (~7 years old) was showing a unix pc off to her friends. When asked 'Where's the colours, where's the game board' she replied "Oh, this isn't one of *those* computers, this is one that a bunch of men use at work!". We did remind her not to be sexist... If by 'micro' you mean (effectively) an IBM PC then I would reply that *nothing* competes with an IBM PC. Putting a machine up against an IBM offering generally results in getting stomped by Big Blue. >~~~~~~~~~~ <<Flame on>> Whooo! asbestos time. >Its my less than humble opinion that its a rediculous waste running >a multiuser micro. I absolutely agree. >Silicon is too cheap now to worry about running a CPU 100% of the >time. I can get 68000L8s qty1 for under $10. I can get 1M of 150ns >RAM for under $100 (these out of BYTE). The Unix PCs most >significant resources (graphics and phone interface) arent REALLY >sharable. Why buy a system that shortchanges 4 out of 5 users when >the technology is there to give them a full 'workstation' of their >own.. I tend to agree, but am less confident of AT&T's, or any other non-garage operation's, ability to provide such a 'workstation' at the same price. Remember, board cost runs about 4-5 times parts cost, and system cost is 3-4 times board costs. My strictly personal opinion is that as a System V UNIX engine the unix pc is a bit expensive, a bit late, and very short of peripherals. Of course, for the VAR/ISV market that the machine is at least partially aimed at nobody really cares that the 2-n'th users don't have all the goodies because it is being sold as a single-user station with electric mail capabilities. For the office automation market exactly the opposite is the case. Trying to reconcile these two markets does not sound easy to me. -- Jonathan Clark [NAC,attmail]!mtune!jhc My walk has become rather more silly lately.
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