HDTenEightyP/NetNews huggingface dataset:
Newsgroups: comp.sys.mac.hardware
Subject: Re: Se/30 32-bit clean?
From: mcrae@husc8.harvard.edu (Andrew McRae)
Date: 21 Nov 92 14:33:11 EST
Reply-To: mcrae@husc8.harvard.edu
Originator: mcrae@husc8.harvard.edu

In article <1992Nov20.221038.1@jaguar.csc.wsu.edu>, f0975893@jaguar.csc.wsu.edu writes:
>                                                 In the old 24-bit mode, the
> maximum amount of memory you could address was 4MB (8MB in the case of the
> SE/30 - something I still have not worked out why!!).

I think the "4MB" applies to the Plus (and SE?), and maybe (in principle)
older 68000 Macs. The 68000 had a 24-bit address bus, so it could address
2^24 bytes, or 16MB. In the Plus at least, 4MB of the address space was
allocated to RAM, 4MB to ROM, 4MB to (ummm...) the VIA and something else,
and I can't at all remember where the other 4MB went. (It's a long time
since I looked this up.)

When the 68020/030 Macs came out, they had a 32-bit address bus, but used
8 bits of it for a variety of things that meant that only 24 bits could be
used for addressing RAM. I assume that those "other things" included
determining whether RAM or ROM or something else was being addressed, but
they also included a number of flags that did things like locking handles
(making their objects non-relocatable). I believe the most common cause of
programs failing to be 32-bit clean is that they directly modify those
flags, rather than using the routines provided for modifying them. Now
that the flags have been moved elsewhere, it's not surprising that such
programs will crash.

Anyway, I think that's the answer. 32-bit-dirty 020/030 Macs can address
8MB of RAM. 68000 Macs can, by and large, address only 4MB. (The memory
map for the PB100 and Portable must be different from that for the
Plus/SE, as they can address more RAM.)

Andrew.
-- 
Andrew McRae                       Internet: mcrae@husc.harvard.edu
                                     BITnet: mcrae@HUSC
Newsgroups: comp.sys.mac.hardware,comp.sys.mac.misc
From: gurman@umbra.gsfc.nasa.gov (Joseph B. Gurman)
Subject: Re: Mac ][vx/MIDI
Organization: Goddard Space Flight Center
Date: Mon, 23 Nov 1992 19:35:10 GMT

ibhan@husc10.harvard.edu (Ishir Bhan) writes:

>lakerb@rcwusr.bp.com writes:

>>My neighbor just came over to complain that his new PowerBook will not run his
>>MIDI.  Is this because there is no external voltage supplied to the serial
>>port?

>I had that problem on a Mac II.  I got an interface with its own power
>adapter and it works fine.  Also works fine on my PowerBook Duo 230..

    There is a known problem with the PowerBook 140, 170 (100? 145?)
serial port at high bit rates (e.g. MIDI or data-compressing V.32bis
modems). There are conflicting stories about whether a "PowerBook Tuner"
available with some manufacturers' modems in alpha form is still being
worked on, or is part of 7.1, or....
    Personally, I use the serial (printer) port on a PB170 with a
DaynaPort E/Z Ethernet adapter and have done ftp transfers at up to ~220
kbps. Maybe it would have been faster if some packets hadn't gotten
dropped and had to be retransmitted, but I can't tell without some sort
of sniffer.
    Hope this isn't the problem with the MIDI....
						Joe Gurman

--
J.B. Gurman / Solar Physics Branch / NASA Goddard Space Flight Center /
Greenbelt MD 20771 USA / gurman@umbra.gsfc.nasa.gov
| Federal employees are prohibited from holding opinions under the Hatch Act.|
| Therefore, any opinions expressed herein are somebody else's.              |
Newsgroups: comp.sys.mac.hardware
From: mcohen@vax.clarku.edu
Subject: HELP: PB140 LCD problem (cable/RAM/LCD?)
Organization: Clark University
Date: 20 NOV 92 03:11:07 GMT

I'm having a recurring hardware problem with my PB140.  Of course its 
milliseconds out of warrantee.  When the screen is entirely gray (such as the 
default desktop background), I have vertical lines in the bottom-left of my 
LCD screen.  The lines go from exactly the halfway point down to the bottom of 
the screen, and give-or-take are alternating off-on from left to right.

When items (icons, text, etc) are in the bottom-half of the screen, the lines 
go a bit wild, appearing in various places (still vertically on the 
bottom-half).  

This happens periodically.  Much of the time the PB140 is fine, then suddenly 
these symptoms occur with verying degrees from mildly annoying to downright 
disruptive.  This can occur at powerup or after use, and will go away without 
warning.  I don't seem to have any other problems with the machine.

The symptoms seem to indicate bad VRAM, but it might be a loose/bad cable.  I 
sure hope it isn't a bad LCD panel.  Does anyone with PB140 HW experience have 
a better indication of the problem?  I imagine the VRAM is surface mounted, 
correct?  Any other advice?  Anything greatly appreciated.

/--------------------------------------------------------------------------\
| > <    Mitch Cohen * Multimedia consultant * MCohen@vax.clarku.edu       |
|  ^          Any opinions expressed are clearly not my own.               |
|  v     I'll come up with something intelligent to put here later.        |
\__________________________________________________________________________/
Newsgroups: comp.sys.mac.hardware
Distribution: world
From: Joe_D._Ciarcia@fourd.com
Organization: 4th Dimension BBS
Date: Tue, 17 Nov 1992 19:43:28 EST
Subject: Re: >Mouse

My mouse is from Taiwan and I have the same "sticky mouse" problems.  Joe C.
********************************************************************
System: fourd.com                                Phone: 617-494-0565
Cute quote:  Being a computer means never having to say you're sorry
********************************************************************
From: eaiu243@orion.oac.uci.edu ()
Subject: Re: IIvx Bashing
Newsgroups: comp.sys.mac.hardware
Organization: University of California, Irvine
Date: 21 Nov 92 04:57:28 GMT

In article <1992Nov19.065131.12036@reed.edu> wrowe@reed.edu (Wayne S. Rowe) writes:
>--> 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.

I work at the computer store here at UCkI, and work with/demo both the IICk
and IIvx many times daily. In my experience thus far, the IIvx is noticibly
faster in every comparison I've cared to make. For instance: running 8bit
quicktime, the vx is noticibly smoother. In any video-update intensive
situation, the vs is better. (Thank god for VRAM!) Also, the IIvx was
a great deal faster in an installation of 1-2-3/Mac that I did the other day.
These are all PURELY subjective, and no, I didn't use a stopwatch.

I *have* noticed, however, that the vx's speaker seems overmatched by the 
startup sound. It soudns *great* with everything else I've tried, though.

--Andrew


Newsgroups: comp.sys.mac.hardware
From: pfam@amstel.NoSubdomain.NoDomain (Peter F. A. Middelhoek)
Subject: Sound-Input NuBus Boards
Keywords: Sound input, NuBus, cheap
Organization: University of Twente, Dept. of Computer Science
Date: Fri, 20 Nov 1992 13:14:40 GMT

I was wondering whether anyone could give me some pointers about
NuBus sound input boards, for my IIcx.  I want to be able to use
all the standard voice annotation stuff.  I can't use something
like MacRecorder (which I'm told uses the serial port) because I'm 
clean out of serial ports left to use.

	Obviously I'm looking for something that'll give me sound
input capability, that is compatible with the standard Apple System
Software and works like the built-in sound input, like on the Mac
Classic II.  Of course it would be nice if it isn't too expensive.

	Does anyone know of such a thing?!  Any help would be
greatly appreciated.


-- 
Peter `pfam' Middelhoek		| It's just a little too late
SIL Project			| it's never enough to swallow those pills
Twente University		| Now I'm sick and always will be
Newsgroups: comp.sys.mac.hardware
From: russotto@eng.umd.edu (Matthew T. Russotto)
Subject: Re: Mouse
Date: Tue, 17 Nov 92 23:41:51 GMT
Organization: Project GLUE, University of Maryland, College Park

In article <hp48sx.721874659@wuarchive.wustl.edu> hp48sx@wupost.wustl.edu (HP48SX Archive Maintainer) writes:
>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.

Better get that authorization renewed.  My Q700 came with a heavy
mouse with a gray ball, family number G5431--  and it has the
low-power ADB symbol on it.
-- 
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
Some news readers expect "Disclaimer:" here.
Just say NO to police searches and seizures.  Make them use force.
(not responsible for bodily harm resulting from following above advice)
Newsgroups: comp.sys.mac.hardware
From: Dale_Adams@gateway.qm.apple.com (Dale Adams)
Subject: Re: Video card for IIvx: why?
Date: Thu, 19 Nov 1992 13:45:00 GMT
Distribution: usa
Organization: Apple Computer, Inc.,  Cupertino, CA

In article <19392@ucdavis.ucdavis.edu> itstevec@hamlet.ucdavis.edu writes:
> Can anyone tell me why I need to purchase a video card when using
> a 16 inch color monitor on the IIvx? I was told that the IIvx 5/80 with
> CD Rom will have 1 meg of vram, so why does Apple tell me I need the
> "display card 824" in order to use the 16 inch monitor? Does anyone
> out there use the IIvx 5/80 with a 16 inch color monitor and no
> display card?

The IIvx onboard video is not capable of driving an Apple 16" display.  
You can drive a 3rd party 16" display, but you won't get any higher 
resolution than 640 x 480 (i.e., the standard Mac 13" display resolution). 
The limitation is inherent in the IIvx's video timing generator hardware, 
so even though you theoretically have enough VRAM to drive a 16" display 
at 832 x 624 (Apple's 16" display resolution) the IIvx hardware can't 
generate the video timing signals needed to do so.

- Dale Adams
  Apple Computer, Inc.
From: steve@sep.Stanford.EDU (Steve Cole)
Newsgroups: comp.sys.mac.hardware
Subject: Re: HOW DO I rename a hard disk????????
Date: 17 Nov 1992 19:24:22 GMT
Organization: Stanford Exploration Project
Distribution: world
NNTP-Posting-Host: taal.stanford.edu

Turn off file sharing in System 7. Then it should work.
-----------------------------------------------------------------
Steve Cole  (steve@sep.stanford.edu, apple!sep!steve)
Department of Geophysics, Stanford University, Stanford, CA 94305
From: stine@jeeves.ucsd.edu (Blaine Stine)
Newsgroups: comp.sys.mac.hardware
Subject: Grayscale ghosts on my new PB160 screen???
Date: 16 Nov 92 17:04:55 GMT
Organization: University of California, San Diego

Has anyone else noticed that when you have the monitor on a new
PowerBook set to 16 colors or gray that there is a dramatic
ghost of the title bar that extends up to the top of the screen
and down to about the middle forming a gray box. It also seems
that the border lines of any window where the scroll boxes are
also seem to form ghosts. One other thing is if you put the
mouse cursor in the title bar a vertical line appears in the 
ghost. It is such a pain that I'm not using the gray scale
setting. I've tried to adjust the brightness/contrast to get
rid of it but no way.This occurs on both of the PB160's I've 
used. Anyone have any ideas?

Blaine Stine
UCSD Biology
Newsgroups: comp.sys.mac.hardware
From: louislam@iastate.edu (Louis C Lam)
Subject: Re: ][ci video
Organization: Iowa State University, Ames IA
Date: Fri, 20 Nov 1992 14:56:43 GMT

In <1992Nov19.004751.41126@fourd.com> Joe_D._Ciarcia@fourd.com writes:

>Can anyone recomend a high quality inexpensive video board for a Mac ][ci?  I
>have a Mitsubishi Diamond Scan (model AUM-1391a) VGA monitor that I would like
>to use with it.  Thanx in advance, Joe C.

I want the info too. I can't stand that the scrolling speed of Word on my
PB100 is almost as fast as the ci in 256 colors. 

(Translation: the scrolling speed of a ci in 8-bit is almost as slow
as that of a PB100)

Will a cheap (I don't want an expensive one, cux I'll eventually go up
to the Quadra machines...) help the video output of a ci a lot?

Louis
From: jstc_ss@troi.cc.rochester.edu (j. collins)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Farewell to the Mac? (not flame)
Date: 19 Nov 92 06:26:54 GMT
Organization: University of Rochester - Rochester, New York

In <1992Nov19.005422.15975@ryn.mro4.dec.com> akhiani@ricks.enet.dec.com (Homayoon Akhiani) writes:


>In article <trimble.722112979@ph-meter.beckman.uiuc.edu>, trimble@ph-meter.beckman.uiuc.edu (Chris Trimble) writes:
>|>Newsgroups: comp.sys.mac.hardware
>|>From: trimble@ph-meter.beckman.uiuc.edu (Chris Trimble)
>|>Subject: Re: Farewell to the Mac? (not flame)

>The brings up a good point, POWER PC is a complete new architecture.  That means
>all my current software is junk! because they will not run on PowerPC.
>Most likely, Apple will have something like SoftPC to run the old 68xxx software
>on PowerPC.  But this will be slow.  Imagine running MSwindows with SoftPC 
>on Quadra.  

actually this is sort of right.  They will be using software emulation for
the mac on the powerpc, but what I have read has suggested that this 
implemenation will actually run mac software faster than current mac's.


>look, PowerPC is great, but do you really can use the extra power? 
>can you afford to buy it? can you get the software you need to run on it?

Yes I can use the extra power, the suggested prices are in line with the
current mac prices, and I will have the current base of mac software to
choose from to begin with, and I am sure that within two years of its release
that the powerpc will begin to have a large software base on it's own.

>look at the PC, intel will create faster and faster x86 chips, no matter what.
>IBM and the rest on clones will produce faster and faster x86 PC 
>Motorola will create faster and faster 68xxx and Apple will make faster Mac II
>and Quadra's.  

actually apple will probably stop using the 68xxx series within three years
(long estimate) due to the coming powerpc's

>The major factor in Personal Computer world are:
>  1st: cheap software 
>  2nd: cheap hardware

Try a major factor, not the major factor


>-------------------------------------------------------------------------------
>Homayoon Akhiani                               "Turning Ideas into ... Reality"
>Digital Equipment Corporation                        "Alpha, The New Beginning"
>77 Reed Rd. Hudson, MA 01701            "All Rights Reserved. Copyright(c)1992"
>Email: akhiani@ricks.enet.dec.com     "The words are mine, and not my employer"
>-------------------------------------------------------------------------------

-justin m. collins <jstc_ss@troi.cc.rochester.edu>
Newsgroups: comp.sys.mac.hardware
From: cac@iear.arts.rpi.edu (Christopher A. Cox)
Subject: PB100 in England...power?
Organization: Rensselaer Polytechnic Institute, Troy, NY
Date: Mon, 23 Nov 1992 15:56:08 GMT

	Well, I am about to head for England with still a lot of writing
to do, so I need my PB100.  I know the AC adapter says it takes
100-240V, but let me ask anyone who knows for sure:  Will one of those
little things from Radio Shack that changes the shape of the plug (so it
fits in British outlets) suffice?  If not, what do I want.
	Please email repsonse - I really haven't the patience to go
through all the articles posted here every day.

							Thanks,
							Chris

-- 
---------- If you cut here you'd probably ruin your monitor -------------
cac@iear.arts.rpi.edu			               Christopher A. Cox
cac@itchy.geog.albany.edu			       I think, therefore
cc8034@eve.albany.edu				              am confused.
Newsgroups: comp.sys.mac.hardware
Distribution: world
From: Joe_D._Ciarcia@fourd.com
Organization: 4th Dimension BBS
Date: Thu, 19 Nov 1992 23:29:40 EST
Subject: Re: Quadra 950 + what fast ext. HD? = :)

In article <1992Nov18.025437.39462@fourd.com> Joe_D._Ciarcia@fourd.com 
writes:
> The Quadra IS indeed a SCSI - 2 machine .......................unless 
> Apple changed something recentley  

Sorry, the Quadras aren't and never were SCSI-2 machines.  This piece of 
mis-information keeps popping up from time to time.  The SCSI hardware 
controller used (53C96) is a SCSI-2 controller, but the standard SCSI-2 
connector is not used.  More importantly, however, the Apple SCSI Manager 
does not provide support for SCSI-2.

- Dale Adams
  Apple Computer, Inc.
------------------------
Cool Beans, Joe!!!
********************************************************************
System: fourd.com                                Phone: 617-494-0565
Cute quote:  Being a computer means never having to say you're sorry
********************************************************************

Newsgroups: comp.sys.mac.hardware
From: Rick.Igou@launchpad.unc.edu (Rick Igou)
Subject: Re: HEAP adjuster program
Organization: University of North Carolina Extended Bulletin Board Service
Date: Tue, 24 Nov 1992 02:23:19 GMT

In article <1992Nov23.120135.487@doc.bmd.trw.com> nickgill@doc.bmd.trw.com writes:
>Hello,
>When you first boot-up your Mac with no open windows, Pull down the menu
>under the apple and select "about the finder". Notice all the white space
>after the finder and only a small amount after the system. For maximum
>efficiency, the system should have 90% black and 10% white. There is a
>program called HEAP fixer or HEAP adjuster or HEAP ...
>
>Is this program anywhere it can be FTPed.
>
>Thanks,
>Nick


I don't know about HEAP, but there's a freeware program called Bootman, by
Bill Steinberg, that allows you to adjust system heap as well as the
number of files you can have open. You can find it at
mac.archive.umich.edu/mac/development (I think). (It's in there somewhere,
I'm sure. [=-)  )

-Rick Igou
--
   The opinions expressed are not necessarily those of the University of
     North Carolina at Chapel Hill, the Campus Office for Information
        Technology, or the Experimental Bulletin Board Service.
           internet:  laUNChpad.unc.edu or 152.2.22.80
Newsgroups: comp.sys.mac.hardware
Distribution: world
From: David_A._Schnider@bmug.org
Organization: BMUG, Inc.
Date: Fri, 20 Nov 1992 01:31:25 PST
Subject: Re: SONY monitors

The information about the Sony CPD-1320 (eroneously labeled the 1302) is
slightly incorrect.  Here are the specifications:

Super-fine pitch Trinitron color tube
Aperture Grille pitch .25mm
Non-glare coating

640 * 480

Scanning horizontal 31.5 kHz
Scanning vertical 60/70 Hz

120V AC

Sold by MacNews for $379 --> ($425 out the door w/ ground shipping)

I don't know what all of this means, but that's what the owners manual says. 
It is a good monitor and I recommend it for any system that can support it.

-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: benkei@cs.utexas.edu (William Kent Richards)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Help: failed to stall system on a HD
Date: 19 Nov 1992 14:50:04 -0600
Organization: CS Dept, University of Texas at Austin
Distribution: world
NNTP-Posting-Host: lion.cs.utexas.edu

In article <1e87teINNg7l@rave.larc.nasa.gov> w.l.vaughn@LaRC.NASA.GOV (Wallace L. Vaughn) writes:
> (Victor Der-Thanq Chen writes

>  [105mb disk worked on Si, won't work on Plus.  Error message is: not formatted
    correctly for this machine (Plus).  Tried reinstalling system, wouldn't take
    it 'cuz said already existed.]

  [suggests actual reformatting with setup software]

>setup program for the 105M HD and reformat the disk with a 3:1 interleave 
>factor, or, some setup programs will just list the type of computers. Due to 
>the Plus's slow SCSI interface many drives work much better at 3:1 instead of 
>the more typical 1:1 used for most macs since the Mac II. (Someone more 
>competent may wish to explain the details of interleave). After reformating 

As I learned from someone on the net :), some of the newer drives, due to
on board caches, can be formatted at 1:1 interleave even with a Plus.

Interleave is how you space logically (not necessarily physically)
contiguous sectors (blocks) around a track.  1:1 means contiguous
sectors are placed physically right after another. 1:2 means
contiguous sectors are placed physically with one sector in between
them (ie, placed every second sector). 1:3 = two sectors between them.

This is done according to how fast the sectors can be consumed vs how
fast they can be read off of the disk.  If consumption is slow, then
one is still being transferred when the drive head is ready to read
the next, so rather than reading the sector then, the drive must
do another rotation to give the previous sector time to get out of
the way.  Thus, incorrect interleave can result in slower overall
transfer, as the time for the extra rotations add up.

With caches, the sectors can be gobbled up as fast (by the cache) as
the head can read them, so the interleave can be at its highest.

I suppose that since the SCSI transfer speed (and the speed at which
the computer consumes it) is the final factor, putting the sectors in
the cache faster with the 1:1 interleave makes little difference on
slow machines (though it certainly might! For small accesses if
nothing else).  However, if you format it at 1:1, you can later use it
with a faster Mac at full speed without reformatting, 'cuz the faster
Mac will be able to eat up the sectors faster.

Kent
-- 

Kent Richards                         "Practice acts of random kindness
benkei@cs.utexas.edu                   and senseless beauty"
From: gwangung@carson.u.washington.edu (Roger Tang)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Farewell to the Mac? (not flame)
Date: 18 Nov 92 20:56:08 GMT
Article-I.D.: u.1992Nov18.205608.26097
Organization: University of Washington, Seattle

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.

>  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.

>>	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.

> - Chris
>   (Standard disclaimers)

	Hmmm....you a MBA candidate or an American corporate manager?  Sure
sounds like it.

	On the other hand, Japanese execs have a different philosophy, which
seems to be doing much better.....



-- 
Roger Tang, gwangung@u.washington.edu
Producer Emeritus, Asian Theatre at the UW
	"The definition of balls is for a non-singer to go karaoke singing
with the cast of a musical revue."
Newsgroups: comp.sys.mac.hardware