HDTenEightyP/NetNews huggingface dataset:
From: Conrad_Nobili@Harvard.EDU (Conrad C. Nobili)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Duo opinions wanted
Date: 17 Nov 92 15:56:21 GMT
Followup-To: comp.sys.mac.hardware
Organization: Harvard University Office for Information Technology

In article <of287PW00WBNA_1GNc@andrew.cmu.edu>, ra00+@andrew.cmu.edu
(Robert Agustin) wrote:

>  - Does the MiniDock come with an FPU?

No.  The Duos themselves should have included one on the motherboard.  I
and several other people I know will get Duo 230s the day we hear that we
can either get an FPU *inside* the Duo or get some sort of "mini" dock that
includes one.

Please anyone post any rumors they know of "mini" docks (i.e. not
abominations like the Duo Dock) being developed....

Conrad C. Nobili  N1LPM  Conrad_Nobili@Harvard.EDU  Harvard University OIT
Newsgroups: comp.sys.mac.hardware
From: bauer@esman.den.mmc.com (Dave Bauer)
Subject: Re: MacIIcx + Toshiba XM3301E = photo CD?
Reply-To: bauer@esman.den.mmc.com
Organization: Martin Marietta Astronautics, Denver
Distribution: usa
Date: Mon, 23 Nov 1992 11:20:31 GMT

In article 29152@afterlife.ncsc.mil, jdzakar@afterlife.ncsc.mil (Joseph D. Zakar) writes:
>
>Does anyone know what it takes to make a Toshiba XM3301E connected to a MacIIcx
>read photo cds?  I've got quicktime 1.5, Apple's CD 4.0 software, and a Toshiba
>driver but I can't get the disk to mount much less read.  I poked around Apple's
>photo cd access extension and saw mention of a slide show viewer but that
>application didn't come with the software distribution on ftp.apple.com.
>
>Thanks,
>Joe Zakar
>jdzakar@afterlife.ncsc.mil


I recently called Toshiba about a XM3301A1 and Photo CD capability.  According
to them (phone and address below), all the 3301 series are single-session Photo CD
compatible with a software driver upgrade - software to be released in about
2-3 weeks.  To get multi-session capability for the 3301 series requires a hardware
upgrade along with the new software drivers - estimated cost for the upgrade was
$100 plus your own shipping costs.  They'll start hardware upgrades when the software
driver is released.

Toshiba America Information Systems, Inc.
Disk Products Division
9740 Irvine Blvd
PO Box 19724
Irvine, CA  92713-9724
Tel: 714-583-3000

---
Dave Bauer
bauer@esman.den.mmc.com
	"Be an optimist - at least until they start moving animals
	 in pairs to Cape Kennedy."  -- ORBEN'S CURRENT COMEDY

Newsgroups: comp.sys.mac.hardware
From: kemp@convex.com (Phil Kemp)
Subject: Panasonic CD-ROM and mac
Summary: can a panasonic cd-rom work on a mac\
Keywords: panasonic cd-rom matshushita mac apple
Organization: CONVEX Computer Corporation, Richardson, Tx., USA
Date: Tue, 17 Nov 1992 15:14:54 GMT
X-Disclaimer: This message was written by a user at CONVEX Computer
              Corp. The opinions expressed are those of the user and
              not necessarily those of CONVEX.

I just started a new phase of my computer literacy. I'm using a mac at
work. It's quite and experience compared to my peecee days! ;-)

I have a panasonic cd-rom on my peecee and have tried to connect it up
to my mac at work. Scsi-probe finds the device and identifies it
correctly but the software that I have seems to be for an 'apple
cd-rom'. 

Does anyone know of software drivers for this cd-rom and my mac?

If this is a FAQ, I apologize. I've just started reading the mac
groups.

PK

--
Phil Kemp			Voice:(214)-497-4671
CONVEX Computer Corporation
Richardson, Texas		Internet:kemp@convex.com
From: drchambe@tekig5.pen.tek.com (Dennis Chamberlin)
Newsgroups: comp.sys.mac.hardware
Subject: Re: About IIsi upgrade heat
Date: 18 Nov 92 18:14:03 GMT
Organization: Tektronix, Inc., Beaverton,  OR.

In article <1992Nov15.190901.202@physc1.byu.edu> seth@physc1.byu.edu writes:

>	When you increase the clock speed to 25 MHz, which is a 25% increase
>in clock speed, you are NOT increasing the current through the chip by 25%,

>Since the formula for power is P=I^2*R, a current that was 1.25% of the
>original current would produce an increase of (1.25)^2=1.563%. 

>This means that each clock cycle will produce heat for a SHORTER amount of
>time, and that therefore even though there are 5 million more clock cycles
>you end up with no more heat than before. 
>
>I hope that some EE freakmo who can explain it better than
>me will write in and do so. 

Most of the power dissipated in the chip occurs during the switching 
transitions. The R of the I^2*R is very low during the on-time and the I
is zero during the off-time. However, the transitions are not instantaneous
and a plot of power over the switching cycle shows big spikes when both I
and R are significant (during the switch). There are more of these transitions
and thus more power spikes at the high clock rate. 


>I have no idea what the
>increase in clock speed will do to the impedance of the chip.  

...but it is possible that some
>inductance value of the chip would change with the increase in clock speed, 
>and thus change the power dissipated by the chip. 
...I would like to know. But, these ideas sound reasonable to
>me,...

Your ideas are indeed reasonable, but I think you assumed the transitions 
take zero time and thus dissipate no power. Actually, they account for the
majority of the power.
Also, although the inductances and capacitances represent impedances to fast
signals, this type of impedance does not dissipate power. Think of springs
vs. shock absorbers or brakes.

...I have a hypothesis. Here goes: In some chips,
>manufacturing defects and abnormalities sometimes might result in some current
>path in the circuit being too close to another circuit path, resulting in 
>more interference with each other. Now, an oscillating current will radiate
>radio waves according to physics, so these radio waves might be interfering
>with each other or there could be some capacitance thing or any number of
>types of interference between the two traces. Now, an increase in frequency 
>generally means an increase in power broadcast for radio waves and such, and
>it could be that this increase in the radio wave energy pushes the chip over
>the edge, to where the interference between traces finally proves fatal for
>the chip and you get false signals as a result.

You're absolutely right. The extra noise generated will tend to reduce 
operational tolerances at the higher speed. However, timing considerations
may be more important. As speed increases, Clock transitions will eventually
crowd the data transitions to the point the data "read" becomes unreliable.


                 sincerely,

		    EE Freakmo



Newsgroups: comp.sys.mac.hardware
From: yane@fraser.sfu.ca (Yan Choon Ee)
Subject: Formatting a Quantum 105
Summary: How to format a Quantum?
Keywords: Format Quantum
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Thu, 19 Nov 1992 03:44:14 GMT

Hi!  I've just recently attempted to move a 105 MEG Quantum drive from
my Apple II to my Mac, but I'm having trouble getting the Mac to
recognize the drive.  First of all, it doesn't show up on the desktop
(this is normal, I know), but then when I try to format it using
Apple's HD Set Up utility, it doesn't seem to know that the drive
exists!  SCSI Probe lists the drive correctly as a Quantum LP105S
[and then a whole bunch of numbers] with it's version is 3.1.

Is there a freeware/shareware program that will format this drive for
me?

Thanks for any suggestions.

yan choon
-- 
Yan Choon Ee
Simon Fraser University        Internet: yane@sfu.ca   
"Diplomacy is saying the nastiest thing in the nicest possible way."
Newsgroups: comp.sys.mac.hardware
From: szatezal@magnus.acs.ohio-state.edu (Shane M Zatezalo)
Subject: Re: Farewell to the Mac? (not flame)
Organization: The Ohio State University
Date: Wed, 18 Nov 1992 21:41:45 GMT

In article <1992Nov18.205608.26097@u.washington.edu> gwangung@carson.u.washington.edu (Roger Tang) writes:
>In article <trimble.722112979@ph-meter.beckman.uiuc.edu> trimble@ph-meter.beckman.uiuc.edu (Chris Trimble) writes:
>>model03@kuhub.cc.ukans.edu (John Deke) writes:
>>  Furthermore, Apple does to the Mac owners what they've done to
>>  Apple // owners about 5 times as often. Every 6 months Apple outdates
>>  the models of 6 months ago.
>
>	That's funny. My SE can run the same programs everybody else does.
>Nothing outdated about that.

That's not the point.


>>  This kind of anticipation game is what has kept me from buying a Mac for
>>  so long.
>
>	I'd suggest you look in the mirror before blaming Apple.

Oh, give me a break. There are SO many people out there that want macs,
but are afraid to buy one, because two months later, there's a way better
model of it out at only $200 more than what you just paid. (a great
example is the pb 145)

I'm not justifying this reasoning, but in a way, I can whole-heartedly
agree with them.


>>>	Is this good or not?
>>  No. It isn't. I think Apple should try to build a line that can stand
>>  the test of time as well as your //e (and mine :) did.
>
>	They do.

WRONG. They don't. Apple's computers have lacked the innovation that
lines like the Apple II had.

Just ask Apple's Marketing why they do what they do. To make you buy
more and more macs, no matter the cost. "Its outdated? That's ok, buy
our next model."  (oh boy... I can see the flames coming now... ;)  )

 _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
:   Shane M. Zatezalo         : i-net> szatezal@magnus.acs.ohio-state.edu :
:   CIS Eng Ohio State        : NeXTMail>  shane@kiwi.shws.ohio-state.edu :
:          "The light in the window is a crack in the sky"  - ozzy        :
:GS:::: Apple II forever!! ::::::GO BUCKS!::::::: Play Lacrosse! :::::::GS:
From: steele@vlsi.caltech.edu (Craig Steele)
Newsgroups: comp.sys.mac.hardware
Subject: Re: 68040 speedup?  25MHz -> 33MHz
Date: 20 Nov 1992 11:06:44 GMT
Organization: California Institute of Technology
Distribution: world
Reply-To: steele@vlsi.caltech.edu (Craig Steele)
NNTP-Posting-Host: kiwi.cs.caltech.edu
Keywords: quadra, cache, speedup

 In article <7038@news.duke.edu> cchung@sneezy.phy.duke.edu 
(Charles Chung)  
writes:
> One more thing, I think Daystar puts out a 128K cache out for the  
> quadras.  However, I understand that Motorola estimates 93% hit rate  
> for the 2 4K caches on the 040.  Has anyone used this product?  Does  
> it speed up anything at all?  How accurate are Motorola's estimates?

The FastCache Quadra is reviewed in the MacWeek 11/9 issue,
Their numbers showed speedups between ~2 and 35% on a Q700.
On my applications I see 10 to 20% on large CPU-bound applications,
no improvement on either small (e.g., benchmark programs), which
fit well in the primary cache, or disk-bound applications.
At $250, it's marginally cost-effective, but won't revolutionize
your life.

Craig Steele, steele@vlsi.caltech.edu
From: wrowe@reed.edu (Wayne S. Rowe)
Newsgroups: comp.sys.mac.hardware
Subject: Re: IIvx Bashing
Date: 19 Nov 92 06:51:31 GMT
Article-I.D.: reed.1992Nov19.065131.12036
Organization: Reed College, Portland, Oregon

--> There sure seems to be a lot of IIvx bashing going on both here and in the
--> mac rags.
--> Of course this approach will be more expensive, but I don't want to be saddled
--> with a problem machine.

Aww, don't listen to 'em. I have a IIvx and it works great!
Better than great actually.
Newsgroups: comp.sys.mac.hardware
From: freek@phil.ruu.nl (Freek Wiedijk)
Subject: Speedometer records?  Where?
Organization: Department of Philosophy, University of Utrecht, The Netherlands
Date: Sun, 22 Nov 1992 21:46:08 GMT

I would like to have Speedometer records for all current Macs (there
are lots of them, and I still want to know the differences).  I tried
to find them on the net (archie, etc.) but all I saw where records for
old machines (like the IIfx, etc.)

Where can I find recent records?

Can everyone that have collections send them to me?  I'll summarize to
the net.  (Please state versions of Speedometer & System.)

Is it true that Apple advertises the performance of their products with
Speedometer values?  If so, what are the numbers that Apple gives?

Freek
--
Third theory of Phenomenal Dynamics:  The difference between a symbol
and an object is quantitative, not qualitative.
Newsgroups: comp.sys.mac.hardware
From: chenette@rddvax.decnet.lockheed.com
Subject: IIvx sound cut-outs
Organization: Lockheed Palo Alto Research Labs
Date: Thu, 19 Nov 92 04:50:48 GMT

I have a IIvx/CD, purchased over a ci because I thought it was a better
deal. I really like the fast CD ROM.  I have one problem, however.
The sound seems to shut down after a minute or so. After this happens
the next beep, or the beginning of the next sound from the system,
is cut out. It sounds like it takes a second or so for the internal
sound system to turn itself back on. This time is at least as long
as the typical system beep.  Any comments, advice, information ?

Dave Chenette    chenette@pemaxs.space.lockheed.com

Newsgroups: comp.sys.mac.hardware
From: jhg4b@boltzmann.mech.virginia.edu (Jay Grinstead)
Subject: NeXT CD ROM on a Macintosh
Organization: University of Virginia
Date: Wed, 18 Nov 1992 18:23:02 GMT

Hello

Does anyone know if a NeXT CD ROM will work on a Mac? I am sure the drive  
mechanism is the same as some made for the Mac (but I don't know which),  
so I assume that all that would be required is some sort of driver.

Any clues?

thanks,
jay
Newsgroups: comp.sys.mac.hardware
From: coolidge@sirius.aux.apple.com (John L. Coolidge)
Subject: Re: Farewell to the Mac? (not flame)
Date: Mon, 23 Nov 1992 23:02:58 GMT
Reply-To: coolidge@apple.com
Organization: Open Systems Development, Porting&I/O Group, Apple Computer, Inc.,Summary:

akhiani@ricks.enet.dec.com (Homayoon Akhiani) writes:
>In article <1992Nov23.093203.25563@etek.chalmers.se>, janolov@cdg.chalmers.se (Jan-Olov Lantto) writes:
>|>Quote from Apple Direct July 1992 concerning emulating 680x0:
>|>
>|>"Pagemaker spent 88 percent of its total execution time in the Toolbox,
>|>while the numerically intensive Excel still spends about two-thirds (67
>|>percent) of its time there."

>Maybe I am missing something here, programs that do numerical processing using
>the FPU or integer processing using 68xxx will be slower on PowerPC.
>it does'nt matter if "Excel spends about two-thirds of its time in ROM" on a 
>68xxx machine. if you probably run it on PowerPC and the look at the precentage
>of time spent in ToolBox you will find that two-thirds of its time in spent in
>emulation code.

>If I change a number in my Lotus spreedsheet, and it happen to recalculate 
>the numbers, how can it be faster on emulation code? 

Here's an example which might show how emulation can be similar to or
faster than native code given the overall picture. First, assume that
emulation can be done at 10% the speed of native code on a comparable
processor. Thus, a 10 SPECMark processor can run emulated code at 1
SPECMark performance. Now, assume that the first PowerPC Macintosh
will be about 4x faster than current Q700's (reasonable, based on the
publised projections).

Now, assume that each program takes 100 units of time on a current Mac
to do its thing. Then

    Program     680x0 time                   PowerPC time
                toolbox  own code  total     toolbox  own code  total

    Excel       66.6     33.3      100.0     16.65    83.25     99.9
    Pagemaker   88.0     12.0      100.0     22.0     30.0      52.0

The point is that, while emulation takes (10/4=2.5) times as long,
much of the execution time of the program isn't emulation but rather
native-PowerPC speed toolbox code running 4x native-680x0 speed.

Obviously, these results will vary depending on the nature of the
program being run. However, there's lots of profiling data showing
that most Mac programs spend 66% or more of their time in the toolbox;
thus, it's pretty each to believe that a PowerPC Macintosh could at
least equal the speed of a Q700 in 680x0 compatibility mode.

--John

        It's so fast, it can do an infinite loop in 30 seconds.
                -- Brian Bechtel, when the Mac IIfx came out

+++John L. Coolidge++++++++++++++++coolidge@apple.com+++++++++++++++++++++++
I speak for myself, not for Apple Computer. Copyright 1992 John L. Coolidge.
Copying allowed only if attributed, and if all copies may be further copied.
Newsgroups: comp.sys.mac.hardware
Distribution: world
From: David_A._Schnider@bmug.org
Organization: BMUG, Inc.
Date: Fri, 20 Nov 1992 01:51:58 PST
Subject: PB160 Q's

I have two questions:
1)Does putting new memory in a PB160 violate the warranty?

2)Can you daisy chain SCSI devices on a PB160?

-David
***************************************************************************
             From Planet BMUG, the FirstClass BBS of BMUG, Inc.
              The above message was gatewayed via PostalUnion
***************************************************************************
The message contained in this posting is entirely the poster's personal
opinion.  Any possible, real or perceived, (dis)similarities with the
views held by BMUG, are purely coincidental.
***************************************************************************
Newsgroups: comp.sys.mac.hardware
Distribution: world
From: David_A._Schnider@bmug.org
Organization: BMUG, Inc.
Date: Sun, 15 Nov 1992 21:23:23 PST
Subject: Re: Sony CPD-1302 (and CPD-1604S 17") multisync monitor ?

Mac News sells the 1302 for $379, $425 total after ground shipping.  The
problem is what will it work with.  i have one that works fine with my LC, but
I want to buy a PB160 and I don't know if it will work.  I'm fairly certain it
won't work with an Si because they don't support VGA.

-David
***************************************************************************
             From Planet BMUG, the FirstClass BBS of BMUG, Inc.
              The above message was gatewayed via PostalUnion
***************************************************************************
The message contained in this posting is entirely the poster's personal
opinion.  Any possible, real or perceived, (dis)similarities with the
views held by BMUG, are purely coincidental.
***************************************************************************
From: hp48sx@wupost.wustl.edu (HP48SX Archive Maintainer)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Mouse
Date: 15 Nov 1992 18:46:03 -0600
Organization: Washington University in Saint Louis, MO USA
NNTP-Posting-Host: wuarchive.wustl.edu

The light mouse with the black ball is the Low Power mouse, which is
made by Logitech (AT least the PCB is). It is the only one to use on the
Mac Portable if you have one of those, and thus probably the mouse of
choice for any PowerBook too.

Povl H. Pedersen - Authorized Apple techie.
-- 
Povl H. Pedersen             hp48sx@wuarchive.wustl.edu
HP48sx archive maintainer

All Opinions (C) Copyright the Intergalactic Thought Association
Newsgroups: comp.sys.mac.hardware
From: isr@rodan.acs.syr.edu (Michael S. Schechter - ISR group account)
Subject: Re: 25 mHz IIsi--FAILURE
Organization: Syracuse University, Syracuse, NY
Date: Thu, 19 Nov 92 12:13:38 EST

In article <1992Nov18.123536.28293@nntp.hut.fi> t35058d@kaira.hut.fi (Sami Markus Kuisma) writes:
>In article <2210021@hplvec.LVLD.HP.COM> bayes@hplvec.LVLD.HP.COM (Scott Bayes) writes:
>>This upgrade is a "your mileage may vary" situation.  You're taking
>>(40 MHz) and adding 25% to what they promised.  You'd expect some
>>systems will be "lucky" and go, and others won't.  The really unlucky
>
>It didn't work for me either. After ten minutes system crashed.
>But before crashing I got 24.5% increase in speed. I think this is
>heating problem but I haven't tried heat sinking yet.

Well, for you, it just won't work...
The parts are within spec, but not over spec...
oh well..
From: nick+@pitt.edu (Nick C De Mello)
Newsgroups: comp.sys.mac.hardware
Subject: Re: What's a Good Modem to Buy??
Date: 19 Nov 92 04:19:12 GMT
Organization: University of Pittsburgh

In article <1992Nov18.115912.1@ssdvax.mdcbbs.com> cuy@ssdvax.mdcbbs.com writes:
>
>I'm thinking of getting a modem/fax (hopefully <$300).  Can
>anyone recommend a good modem/fax?  What's a good speed to get on a
>modem?  Is it better to get an internal one or an external one?
>Any other info that you think will be important in getting on will
>be much appreciated.

  In the neighborhood of $300 the machine I've heard the best of
is the ZyXEL U-1496E.  It's v32.bis, v42.bis, MNP 2-5, 14.4k fax
S/R, and is very reliable.  The Supra 14.4K Fax modem is also
really popular, but less dependable, tends to overheat, and 
looses connection, of fails to connect more often than the
ZyXEL or PPI (the PPI is good but expensive).

  Source for the ZyXEL is Kaddy Shack (sp?) 800-638-1170 for $329.

  If you want more info check out the news group comp.dcom.modems,
there seems to be a constant discussion on the relitive value
and dependability of various modems.  Right now the ZyXEL is 
the favored, and the Supra is in the doghouse.

                                      Hope it helps,

                                         -- Nick

  
-- 
   _/   _/  _/  _/_/_/   _/   _/  Sea Shells to C shells,  Waikiki to
  _/_/ _/  _/  _/   _/  _/_/_/     the Internet, a wave, is a wave...
 _/ _/_/  _/  _/       _/ _/                     
_/   _/  _/   _/_/_/  _/   _/  CompSrv: 71232,766 * I-Net: Nick+@pitt.edu
Newsgroups: comp.sys.mac.hardware
From: kellys@orac.holonet.net (Kelly Schwarzhoff)
Subject: 68040 Powerbooks/Duos: When?
Organization: HoloNet (BBS: 510-704-1058)
Date: Sat, 21 Nov 1992 16:58:57 GMT

Does anyone know if Apple is going to come out with a 68040 Powerbook or Duo
and if so, when?

-- 
-------------------------------------------------------------------------
Kelly Schwarzhoff
Internet: kellys@holonet.net	Fidonet: 1:161/445
-------------------------------------------------------------------------
Newsgroups: comp.sys.mac.hardware