acloudfan/newsgroups-mini huggingface dataset:
Newsgroup: comp.sys.mac.hardware

 Re: Quadra 900/950
Organization: The World Public Access UNIX, Brookline, MA
Lines: 26

  writes:

>  writes:

>>  writes:

>>>Quarda 900 is a popular misspelling of Quadra 900, which has a 25 MHz 040
>>>processor. The 950 has a 33 MHz 040, and some local buses on the
>>>motherboard run faster.

>>The video is different also.  The 950 can run a 13" and I believe a 16"
>>monitor in 16 bit color without a VRAM upgrade.

>    Actually, you could put as much VRAM into a Q900 as you want and you
>still won't be able to get 16-bit color, on any monitor. It's not part
>of the on-board video. The Q950, however, can use 16-bit video on
>monitors up to 19" with 2MB of VRAM.

>-Hades


Yes, but if you upgrade the VRAM in a 900 you get 24 bit color.  So
you really don't care.  My point is that out the box the 950 has
more video capability for the same size monitors.  The 900 can
do 24 bit with both 13" and 16", doesn't support 19", and
does 8 bit on 21" monitors.
Newsgroup: comp.sys.mac.hardware

Distribution: world

Organization: BMUG, Inc.Re: x86 ~= 680x0 ??  
Lines: 11

The real question here in my opinion is what Motorola processors running system
7 on a MAC are comparable to what Intel processors running Windows on a PC?  I
recall there being a conversation here that a 486/25 running Windows benchmarks
at about the same speed as 25Mhz 030 in system 7.  I don't know if that is
true, but I would love to hear if anyone has any technical data on this.

-David

**** From Planet BMUG, the FirstClass BBS of BMUG.  The message contained in
**** this posting does not in any way reflect BMUG's official views.
Newsgroup: comp.sys.mac.hardware

 Good display card for 14" multisync?
Nntp-Posting-Host: lk-hp-20.hut.fi
Reply-To: 
Organization: Helsinki University of Technology, Finland
Lines: 20


Hi there!

I wonder if anyone knows and can recommend me a good NuBus display
card for driving a 14" multisync ?
The NEC 3D can do horizontal refresh from 15.5 kHz to 38 kHz and
vertical from 50 Hz to 90 Hz and can do max 1024x768 interlaced,
though I am looking for something more like 800x600 or 832x624
noninterlaced.
It would be very nice to find a card which can be programmed quite
freely within these limits and is capable to display at least
8bits/pixel, preferably more.

Is there anything on the market that comes even close?


Thanks

--
Jartsu
Newsgroup: comp.sys.mac.hardware

 Can I remove the 68000 under my daughterboard upgrade?
Organization: Occidental College, Los Angeles, CA 90041 USA.
Lines: 26

The subject says what I would like to do, here are the details:

I have a 512ke with the MacRescue upgrade board that makes it the
equivalent of a Plus .

The MacRescue board clips onto the 68000 on the MB.  It also has
a 68000 itself.  Periodically I have to remove the clip  and clean the "legs" of the 68000.
Larry Pina's book asserts that this is occasionally a problem with
snap on upgrades:  the 68000's "legs" will oxidize, causing 
unusual system errors.

Well, that's me.

So, I would like to do something permanent, and I think it would be
fairly easy to put a socket in where the 68000 currently is, and
modify the MacRescue board to plug in.  What I'm not 100% sure of
is whether it will work.  It seems to me that the two 68000s aren't
acting independently; so removing one shouldn't have any effect on
the performance of my Mac.  I'm about 97% sure.

Will someone provide the extra 3%?

Erik
Newsgroup: comp.sys.mac.hardware

 Re: Adding int. hard disk drive to IIcx
Organization: University of Washington
Lines: 15
NNTP-Posting-Host: carson.u.washington.edu
Keywords: Mac IIcx, internal, hard disk drive, SCSI

Yes, it is possible to add a second hard drive to a mac IIcx internally. This
is definitely not a recommended procedure by Apple but I have done the equivalent to my CX after upgrading it to a Quadra 700. The power supply is still the
stock CX's and it was able to power two Quantum LPS drives, a PLI SCSI 
accelerator, a Micron technologies 24 bit video board, Daystar QuickCache,
New Technologies Overdrive and 20 meg of RAM simultaneously.

I added a new mount for the drive by attaching angle brackets to the drive
tower. The internal SCSI cable was changed to a longer flat ribbon cable onto
which I added an extra connector about midway. The final HD was internally
terminated and the drive between the motherboard and final HD had its terminator resistor packs removed. Cooling has not been a problem and no SCSI problems
occur with either the PLI SCSI chain or motherboard SCSI hooked into the two
internal hard drives.

It works very well for me, but proceed cautiously if you wish to do the same.
Newsgroup: comp.sys.mac.hardware

 Re: HP DeskWriter 550C...Opinions? Feedback!
In-Reply-To: 's message of 14 Apr 93 14:22:39 GMT
Reply-To: 
Organization: AI Lab, The University of Michigan
	<>
Lines: 16

I like it a lot. It is worth the additional expense. The only problem I
found is with MS Word . If you have a table the is longer than
a page and the cells have a visible border, the last 
line on the first page will be missing. It makes no difference how
the table is formatted. The worst is that it doesn't show up in word's
page view or page preview. 
--


Arie.

=========================================================================
| Arie Covrigaru                 |  University of Michigan AI Lab       |
| Phone: 994-8887           |  Room 149, Advanced Technology Bldg. |
| Internet:   |  1101 Beal Ave., Ann Arbor, MI 48109 |
=========================================================================
Newsgroup: comp.sys.mac.hardware

 Re: Why does Apple give us a confusing message?
Organization: University of Illinois, Dept. of Comp. Sci., Urbana, IL
Lines: 16

  writes:

>In <>   writes: 

>>Does anyone know why Apple has an ambiguous message for C650 regarding
>>fpu?  In all Mac price lists I've seen, every C650 as the message "fpu:
>>optional".  I know from what we've discussed in this newsgroup that all
>>C650 have the fpu built in except the 4/80 configuration.  Why would they
>>be so unclear about this issue in their price list? 

>Perhaps the reason is simple--maybe the marketing people who put together
>the brochures and price lists weren't clear on the FPU issue. 

Perhaps the marketing people don't KNOW what an FPU is!
-Terry
Newsgroup: comp.sys.mac.hardware

 Removable Storage
Organization: USC  Department of Computer Science
Distribution: comp
Lines: 16

We have a Quadra 700 with 170MB HD, but need to a lot of sound sampling
for auditory research. What would be the best type of removable media for 
storing these audio clips?        

Ron


==============================================================================
|       'They say I'm lazy, but                                              |
|        it takes all my time...                                             |
|        Life's been good to me so far!'           -Joe Walsh                |
|----------------------------------------------------------------------------|
|  Ron Pritchett                 Internet:      |
|                                 FidoNet: Ron Pritchett @ 1:376/74.0        |
==============================================================================
Newsgroup: comp.sys.mac.hardware

 Quadra Clock Chipping Works
Organization: University of Washington
Lines: 11
NNTP-Posting-Host: carson.u.washington.edu
Summary: Quadra Clock Chip Swap Success
Keywords: Quadra,clock,accelerate

After reading reports from Germany of success in accelerating a Quadra
or Centris simply by changing the clock oscillator, I decided to test the
claim. I pulled out my Variable Speed Overdrive and the motherboard's
50 mhz clock chip. I put a socket in the clock's place and inserted a
64 mhz TTL clock oscillator I had left over from working on some SI's.
I can't believe it. It actually works. I'm not getting SCSI timing errors
either. This is only after a short run time but I'll keep posting results.
Did I spend all that money on the VSO for nothing? If this keeps working,
the lack of a double boot in itself will be worth the effort.

Guy Kuo <>
Newsgroup: comp.sys.mac.hardware

 Re: x86 ~= 680x0 ?? 
Distribution: usa
Organization: University of Illinois at Urbana
Lines: 59

  writes:

>  writes ...
>>I'm sure Intel and Motorola are competing neck-and-neck for 
>>crunch-power, but for a given clock speed, how do we rank the
>>following :
>>  486		68040
>>  386		68030
>>  286		68020

>040 486 030 386 020 286

How about some numbers here? Some kind of benchmark?
If you want, let me start it - 486DX2-66 - 32 SPECint92, 16 SPECfp92 .

>>While you're at it, where will the following fit into the list:
>>  68060
>>  Pentium
>>  PowerPC

>060 fastest, then Pentium, with the first versions of the PowerPC
>somewhere in the vicinity.

Numbers? Pentium @66MHz - 65 SPECint92, 57 SPECfp92 .
	 PowerPC @66MHz - 50 SPECint92, 80 SPECfp92 . 
        

>>And about clock speed:  Does doubling the clock speed double the
>>overall processor speed?  And fill in the __'s below:
>>  68030 @ __ MHz = 68040 @ __ MHz

>No.  Computer speed is only partly dependent of processor/clock speed.
>Memory system speed play a large role as does video system speed and
>I/O speed.  As processor clock rates go up, the speed of the memory
>system becomes the greatest factor in the overall system speed.  If
>you have a 50MHz processor, it can be reading another word from memory
>every 20ns.  Sure, you can put all 20ns memory in your computer, but
>it will cost 10 times as much as the slower 80ns SIMMs.

Not in a clock-doubled system. There isn't a doubling in performance, but
it _is_ quite significant. Maybe about a 70% increase in performance.

Besides, for 0 wait state performance, you'd need a cache anyway. I mean,
who uses a processor that runs at the speed of 80ns SIMMs? Note that this
memory speed corresponds to a clock speed of 12.5 MHz.

>And roughly, the 68040 is twice as fast at a given clock
>speed as is the 68030.

Numbers?

>-- 
>Ray Fischer                   "Convictions are more dangerous enemies of truth
>                 than lies."  -- Friedrich Nietzsche
-- 
Ravikumar Venkateswar


A pun is a no' blessed form of whit.
Newsgroup: comp.sys.mac.hardware

"Altan J. Stalker" <>SE/30 Hard Drive Problem
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Organization: Indiana University
Mime-Version: 1.0
Content-Length: 1161      
Lines: 33


I have an SE/30 with a 80 meg HD which dates back to April 1989.  When I
originally purchased it, I experienced the failure to boot problem.  This
was fixed soon after by a ROM upgrade on the hard drive.

Lately a similar problem has been occuring.  When the computer is
powered on the HD light flashes a few times and then I am given
the "no disk to boot from" icon.  However, upon turing the
computer off and on again the drive ALWAYS boots up just fine.  
Furthermore, if instead of turning the power on and off I press the reboot 
button the same problem occurs.  But, as I said, turning the power
off and on always works.

This problem is different from the 1989 boot problem in that before
it often required several power off and ons to get it to boot.

Does anybody have any suggestions as to what the problem is or how
it can be fixed?

I'm wondering if it's getting old and requires more time to 
"come up to speed" now.  Is there a PRAM or SCSI setting that
allows me to tell the computer to wait a little longer before 
trying to access the HD?

Thanks!


Altan J. Stalker

Indiana University
Computer Science Dept.
Newsgroup: comp.sys.mac.hardware

Alexander Samuel McDiarmid <am2o+@andrew.cmu.edu>Re: Centris 610 Video Problem - I'm having it also!
Organization: Sophomore, Mechanical Engineering, Carnegie Mellon, Pittsburgh, PA
Lines: 40
Distribution: comp
NNTP-Posting-Host: po3.andrew.cmu.edu
In-Reply-To: <>

 re: Centris 610 Video Problem - I'm having it also!
Date: Sat, 17 Apr 1993 03:17:45 GMT
 
> When the computer is set for 256 colors and certain operations are done,
> particularly vertical scrolling through a window, horizontal white lines
> appear on the monitor .  These lines accummulate as the operation is continued.  If a
> window is moved over the involved area of the screen and then moved away
> the line disappear from that area of the screen.  This problem is not
> observed if the monitor is configured for 16 colors or a 14 inch Apple
> monitor with 256 colors is used. 
> 
> I suspect a bad video RAM chip but cannot be certain.  The problem has
> been apparent since day 1 but has gotten worse.
 
I'm having exactly the same problem.  Again, it's fine when I switch to 16
colors or a smaller monitor.  My configuration is:
 
Model: Centris 610 with 4 MB/80 HD, 512 VRAM, no cards
Monitor: MAG MX15F with 16" monitor adaptor 
 
I just discovered the problem a little while ago after plugging in my
new MAG monitor.  It seems to appear either when scrolling through a
window or when using Alpha or Word and I enter <return>.
 
My guess is bad VRAMs as well.  I really hope it isn't a design flaw.  Is
anyone at Apple listening?
 
Pushpinder Singh

 
***********************************

    Try finding an init called Basic color monitor.  This should clear
up some probs with Centris 610's and vga type monitors.  I know it
exists, somewhere I have a binhexed copy, but I don't know where and
never got around to installing it.  I have this problem on my sony 1604.

                                                                    -A.
Newsgroup: comp.sys.mac.hardware

 Thanks Apple: Free Ethernet on my C610!
Article-I.D.: pion.Apr.6.12.05.34.1993.11732
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 26


	Well, I just got my Centris 610 yesterday.  It took just over two 
weeks from placing the order.  The dealer  
appologized because Apple made a substitution on my order.  I ordered
the one without ethernet, but they substituted one _with_ ethernet.
He wanted to know if that would be "alright with me"!!!  They must
be backlogged on Centri w/out ethernet so they're just shipping them
with!  

	Anyway, I'm very happy with the 610 with a few exceptions.  
Being nosy, I decided to open it up _before_ powering it on for the first
time.  The SCSI cable to the hard drive was only partially connected
.  No big deal, but I would have been
pissed if I tried to boot it and it wouldn't come up!
	The hard drive also has an annoying high pitched whine.  I've
heard apple will exchange it if you complain, so I might try to get
it swapped.
	I am also dissappionted by the lack of soft power-on/off.  This
wasn't mentioned in any of the literature I saw.  Also, the location
of the reset/interupt buttons is awful.  Having keyboard control for
these functions was much more convenient.
	Oh, and the screen seems tojump in a wierd way on power-up.
I've seen this mentioned by others, so it must be a...feature...
	Anyway, above all, it's fast.  A great machine at a great price!
Newsgroup: comp.sys.mac.hardware

 Trying to find a reliable Power Center for MACS
Article-I.D.: bme.1993Apr15.222020.4004
Organization: Biomedical Engineering and Applied Therapeutics, CCF
Lines: 18

Hi There,
	I am trying to find out a reliable Power Center, it is basically
a surge protector that sits below the monitor and has individual control
for each outlet. Some people have an opinion that none of them work well.
The ones that I could locate in Microcenter catalogue were:

Tripp Lite's Isobar Command COnsole 

Proxima Power Director 

Kensington Masterpiece Plus 

Has anyone used one of these? Could you please send me your feedback
on these?

thanks

-shalabh
Newsgroup: comp.sys.mac.hardware

Centris 650 Math CoProcessor option
Organization: The Portal System 
Distribution: usa
Lines: 21


Sorry if this is a FAQ.  I don't normally read comp.sys.mac.hardware.
I am purchasing a couple of Centris 650's.  I configured the systems
as follows:

	Eight  Mb RAM
	Ethernet
	1 Mb VRAM
	Math CoProcessor option

My purchasing agent told me about the math coprocessor option and sent
me the Apple summary documentation to prove it.  I ordered the coprocessor
option, but I'm really not sure that we needed it.  I thought the '040 chip
had a math coprocessor built into it.  Has Apple had a math coprocessor chip
architectured to keep up with the speed of the '040 chip in the Centris 650?
I am concerned that I may have set up a hardware bottleneck.  Please send your
responses to:    I will summarize if there
is enough interest.  Thanks!

-- David Guevara,
   Internet:
Newsgroup: comp.sys.mac.hardware

 Token Ring Cards for Macs
Nntp-Posting-Host: mutsu.rc.rit.edu
Organization: RIT Research Corp
Distribution: usa
Lines: 6

I am looking for recommendations/experiences of bringing Macintosh CPUs
onto Token-Ring Nets. Can someone point me in the right direction for
information. 

Thanks in advance.
-Tom
Newsgroup: comp.sys.mac.hardware

 Re: Recommendations for removable storage media wanted
Lines: 25
Nntp-Posting-Host: ricks
Reply-To:  
Organization: Digital Equipment Corporation
X-Newsreader: mxrn 6.18-2


In article <> you write:
|>>After having used both Syqyest and Bernoulli's, I most enthuiastically
|>>recommend
|>>Bernoulli's. Syquests  are much slower, prone to
|>>cartridge
|>
|>What does your friends have? Buy it.
|>
|>If you have no friends, buy a 128 MB optical and stop

I bought a Bernoulli 90pro drive last year after comparing it with lots of
 diffrent storage solutions,
OPTICAL drives are SLOW, very slow compared to 13 to 19ms access of Bernoulli.

Since I needed additinol online storage , I choosed Bernoulli drive. I use Adobe Preimere and Quicktime movies
alot. you ran out of storage real fast.

IMHO, the best buy currently is the Bernoulli 150Multidisk. 150MB per cartridge

Homayoon Akhiani                               "Turning Ideas into ... Reality"
Digital Equipment Corporation                        "Alpha, The New Beginning"
77 Reed Rd. Hudson, MA 01701            "All Rights Reserved. Copyright1993"
Email:      "The words are mine, and not my employer"
Newsgroup: comp.sys.mac.hardware

 VGA monitors and the mac LC series of computers
Organization: University of Regina
Lines: 9

I recall reading that the Mac LC  can use stand
ard VGA monitors, with appropriate cable adapters.  I am uncertain of this sinc
e I have asked other people who say this is not so.  So can all vga monitors be
 used on the Mac LC?  What are the specs needed for a PC monitor to work with a
Mac LC ?
Newsgroup: comp.sys.mac.hardware

 Re: Quadra SCSI Problems???
Organization: University of Washington School of Law, Class of '95
Lines: 21
NNTP-Posting-Host: stein2.u.washington.edu
Keywords: Quadra SCSI APS

> ATTENTION: Mac Quadra owners: Many storage industry experts have
> concluded that Mac Quadras suffer from timing irregularities deviating
> from the standard SCSI specification. This results in silent corruption
> of data when used with some devices, including ultra-modern devices.
> Although I will not name the devices, since it is not their fault, an
> example would be a Sony 3.5 inch MO, without the special "Mac-compatible"
> firmware installed. One solution, sometimes, is to disable "blind writes"

This doesn't sound right to me.  Don't Quadras use the 53C96?  If so, the
Mac has nothing to do with the SCSI timing.  That's all handled by the
chip.  About the only the timing could be wrong is if Apple programs the
clock registers wrong on the 96.  That, however, should only really hurt
synchronous transfer, which is not used by the Mac SCSI Manager.

Furthermore, disabling blind writes should be meaningless on a Quadra.
On Macs that used the 5380, which is a much lower level SCSI chip, the
Mac was responsible for the handshake of each byte transferred.  Blind
mode affected how the Mac handled that handshake.  On the 5396, the
handshake is entirely handled by the chip.

--Tim Smith
Newsgroup: comp.sys.mac.hardware

 PB questions...
Organization: Purdue University Engineering Computer Network
Distribution: usa
Lines: 36

well folks, my mac plus finally gave up the ghost this weekend after
starting life as a 512k way back in 1985.  sooo, i'm in the market for a
new machine a bit sooner than i intended to be...

i'm looking into picking up a powerbook 160 or maybe 180 and have a bunch
of questions that  somebody can answer:

* does anybody know any dirt on when the next round of powerbook
introductions are expected?  i'd heard the 185c was supposed to make an
appearence "this summer" but haven't heard anymore on it - and since i
don't have access to macleak, i was wondering if anybody out there had
more info...

* has anybody heard rumors about price drops to the powerbook line like the
ones the duo's just went through recently?

* what's the impression of the display on the 180?  i could probably swing
a 180 if i got the 80Mb disk rather than the 120, but i don't really have
a feel for how much "better" the display is .  could i solicit
some opinions of people who use the 160 and 180 day-to-day on if its worth
taking the disk size and money hit to get the active display?  .

* how well does hellcats perform?  ;)

thanks a bunch in advance for any info - if you could email, i'll post a
summary (news reading time is at a premium with finals just around the
corner... :
--
Tom Willis  \      \    Purdue Electrical Engineering
---------------------------------------------------------------------------
"Convictions are more dangerous enemies of truth than lies."  - F. W.
Nietzsche
Newsgroup: comp.sys.mac.hardware

 FORSALE: RADIUS Precision Color 24x Video Card
Organization: HP Colorado Springs Division
Lines: 22
NNTP-Posting-Host: hpcsrc13.col.hp.com

  I have a Radius Precision Color 24x video card for the Mac that fits in a 
NuBus slot.  The card has 3 Mb of VRAM on it, which means that 24-bit color 
is possible on the card!  The card supports just about any monitor scan
rate you can think of .  You can switch resolutions and depth on the fly with a
software control panel.

  This is the ACCELERATED version of the card, which means all QuickDraw 
calls are not executed by the CPU but taken over by the video card, freeing
up the mac processor for other tasks. 

  The cheapest I could find this card for when I called around last night
was $1738 at Mac's Place.  I will sell it for $1250 + shipping.  It is just
over a year old and never been any problem.  It comes with software and the
original manuals.

  Hurry!

Chris Magnuson

Hewlett-Packard Company
 590-2963
Newsgroup: comp.sys.mac.hardware

 Re: LC III NuBus Capable?
Reply-To: 
Organization: Dartmouth College, Hanover, NH
Disclaimer: Personally, I really don't care who you think I speak for.
Moderator: Rec.Arts.Comics.Info
Lines: 12

  writes:

>My friend recently purchased a LC III and he wants to know if there is
>such a demon called NuBus adapter for his PDS slot? CompUsa and
>ComputerCity Supercenter says they don't carry them.

>Does this mean LC III is incapable of carrying a NuBus board?

    Yes. That is exactly what it means. The LC family of Macs can only
use PDS cards. They are not able to use NuBus.

-Hades
Newsgroup: comp.sys.mac.hardware

 Re: HD Setup Partition (Was: OK to set 54 lbs on top of Centris 610???
Nntp-Posting-Host: bcarm422
Organization: Bell-Northern Research
Lines: 21

In article <>,
  wrote:
> 
> 
> Now if I can figure out if there's any hope using the "partition" button
> on the hard disk setup utility ,
> then maybe I can divide up the wealth among the family members a bit more
> securly.  The "getting more information" section of the manual suggested
> trying other avenues before calling Apple, but didn't mention the net.
> -- 
> Mike Feldman, Motorola Computer Group,      384-8538, FAX  384-8550
> 1101 East University Avenue	   Pager in IL  302-7738,  351-0009
> Urbana, IL 61801-2009 !udc!feldman 

The Partition button in Apple's HD Setup lets you set up A/UX and other
types of partitions. It WON'T let you create more than one normal mac
volume. You need SilverLining or something similar to do that. It WILL,
however, allow you to take advantage of some possible unused space on your
hard disk, if you don't mind reformatting the whole thing.

Chris Ellens