HDTenEightyP/NetNews huggingface dataset:
From: matthewd@csufres.CSUFresno.EDU (Matthew Davidian)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Data/Instruction Cache & BURST modes on 68030? Why/when?
Date: 24 Dec 92 05:21:17 GMT
Organization: California State University, Fresno

In article <smcgerty.725067816@unix1.tcd.ie> smcgerty@unix1.tcd.ie (Stephen John McGerty) writes:
>With this in mind, why is it that Motorola have seperate instruction
>and data caches? On the i486 there is a single 8k cache used for
>both instructions and data. On the M68040, there is one 4k cache
>for data, and another 4k cache for instructions. Which is better?
>
>I hear that the Intel 586 is going to have seperate instruction
>and data caches, as in the M68040, so this would seem to imply that
>this is the prefered arrangement...?
>
>The only thing I can think of is that you might not want your instruction
>cache getting overwritten with less frequently used data, in a vector
>operation or something. But this isn't really a serious factor, or
>so I'm told...

The main rationale I've read for the "Harvard" or split cache setup is that
they can both be accessed at the same time; in pipelined architectures this
can be especially good, since in one stage you might be fetching & decoding
an instruction, while another stage might be fetching the operand for another
instruction; both at the same time.

A side effect of having data and instruction caches is that self modifying
code (which is not a good thing anyway) won't work--your writes to modify
the code will go into the data cache (because it's assumed to be data) and
the instruction caches doesn't get the change.

In an article I read before the P5/586/Pentium was announced, the writer
swore that Intel would never produce an 80x86 with a Harvard architecture
because so many DOS programs use self-modifying code--including Windows.
In order to pull this off, they must have added some extra stuff to check
data writes against the instruction cache, or some such magic, or else
the caches will have to be disabled for self-modifying code.

Matt Davidian
matthewd@csufres.csufresno.edu
From: slmt9@cc.usu.edu (Joshua Dinerstein)
Newsgroups: comp.sys.amiga.hardware
Subject: What does a PURPLE screen on bootup mean?
Date: 24 Dec 92 09:33:46 MDT
Organization: Utah State University

	I have a hardware based question for you net geniuses!

	My A3000 has been giving me some problems lately!! But I have been
clueless as to how to fix it. When booting it the other day the system locked
up and gave me a light PURPLE color. I know that the different colors on boot
up all mean something, so I went to my list of colors and looked it up. Or at
least tried too, as there was no purple in the list.

	Does anyone know what the purple screen means? Or how about a light
blue screen? (or maybe it was a light green??? :)

	Any information here would be great!

	Joshua
	SLMT9@cc.usu.edu

-- 
**************************************************************
*                     *                                      *
*  Joshua Dinerstein  *  Nothing matters and what if it did? *
*  SLMT9@cc.usu.edu   *            - Who Knows!!!            *
*                     *              Anyone?? Anyone??       *
**************************************************************

If it's a raincoat why does it have to be dry cleaned?
        - Some Guy on some comody show
From: rene.vega@ivorytower.amdahl.com (Rene' A. Vega)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: AGA USELESS - Thanks To Flicker In Higher Modes!!!
Date: 22 Dec 92 00:02:01 GMT
Reply-To: rene.vega@ivorytower.amdahl.com (Rene' A. Vega)
Organization: Amdahl Corporation

Bob writes:
 	My two cents, for the nearly $500 it cost, the 1960 is a pretty
sad excuse for a monitor.
...
Are there any mulitsyncs that would work better?
	To be fair, though, I am very happy with the A4000 itself.

	--- Bob


Just about any other multisync monitor is better than a 1960. Try a Nec3D, 
Nec4FG, a Sony 130x series. About the only thing nice about the 1960 is its 
ability to display overscan in the 31Khz mode. Most other monitors display a 
black border.


Rene' A. Vega    
Computer & System Architecture
*** My opinions, not my employer's ***
From: jv291s338@sycom.mi.org (Jeff Viola)
Newsgroups: comp.sys.amiga.hardware
Subject: A500 Hard Drive
Date: 28 Dec 92 20:36:36 GMT
Organization: Michigan Information eXchange
X-BBS-Software: EXCELSIOR! V0.975

For Sale Data Flyer 500.
49 MB HD SCSI, 4 MB of Fast ram on board!
Power Supply
SCSI BUS passthrough
$400.00

     Call Jeff @(313) 544-2609
From: db562s445@sycom.mi.org (Dave Birdsong)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 2.0 on A1000??
Distribution: world
X-BBS-Software: EXCELSIOR! V0.975
Date: 3 Jan 93 01:58:47 EST
Organization: Michigan Information eXchange

 I had a A1000 with a DKB Kick Start Board in it with 2.04 in it and it was 
really cool!!
it is really easy to install and worked great!!
Please note if you are using the DKB board you need to cut the wire on the ROM 
chip when you put it in !
Oh yea it can have 2 roms in it to,(1.3 and 2.0 or 1.2 and 1.3 but WHY?)
Dave Birdsong
db562s445@sycom.MI.ORG
Newsgroups: comp.sys.amiga.hardware
From: tmc@spartan.ac.BrockU.CA (Tim Ciceran)
Subject: Re: A4000-T?
Organization: Brock University, St. Catharines Ontario
Date: Thu, 31 Dec 1992 03:15:30 GMT

In article <1992Dec29.173448.6178@cronkite.ocis.temple.edu> jeff@picasso.ocis.temple.edu (Jeff Linder) writes:

>Do I buy a 4000 now?

>Or do I wait for a RUMORED tower that might not be included as part of the
>power up program?

The tower is more than rumoured. According to information released at the 
WOC in Toronto, it should be available in mid-February.

>Will a DSP upgrade be available on the 4000?

Yes, late Spring.

>Will a 33mhz/040 upgrade be available on the 4000?

Sounds like a good bet to me.

>Will all my software work on the 4000?

Anything that works under 2.0 should be fine.

>Should I just buy a Mac instead?

If you're a masochist.
From: James_Coulter@panam.wimsey.bc.ca (James Coulter)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: joystick
Distribution: world
Date: 22 Dec 92 11:56:56 PST
Organization: Commodore Computer Club / PaNorAmA

In a message dated Mon 21 Dec 92 20:17, Arrakis@cup.portal.com (duane M Hal
wrote:

 AMH> Before you buy chips, suggest you check the 4 amp pico fuse (green
 AMH> one) in line with the port (forget the designation). If no one helps
I
 AMH> will research it for you :)

No need, I already gutted the machine. :)  True enough the fuse 'F1' was
blown(it's also not the manual's schematics).


-- Via DLG Pro v0.995

/------------------------------------------------------------------------\
| James D. Coulter              FIDO    :1:153/911                       |
| {}{}{}{}{}{}{}{}          //  USEnet  :james_coulter@panam.wimsey.bc.ca|
|"Punishment is a crime." \X/                                            |
\------------------------------------------------------------------------/
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 1200 owners, please answer these questions..
From: Mark.Stuart@bbs.actrix.gen.nz
Date: Sun, 27 Dec 1992 23:27:31 GMT
Organization: Actrix Information Exchange

In article <pati.725482342@milton> pati@milton.u.washington.edu (Pati Irish) writes:
> Im really debating getting a 1200 because of the follwing I have heard, could
> someone please answer if these thing are true or false..
> 
> I heard the the 1200 will only run %25 percent of the software out there..
> 
> heard the try'n to add a 2.5 int. drive such as the maxtor 80 meg, just doesnt
> work at all...
> 
> And is a 1084 good enuff for the 1200, i mean do you really need a multisync
> to use the AGA software??
> 
> someone please get back to me, im really sick of this slow 500.. i wanna
> faster amiga bad.... Thanks..

25% is an awfully low estimate, I'd say about 80% plus of applications,
games I'm not sure, all the new ones work... I haven't tried old ones yet,
nor have I tried stuff like degrader thouhg ;-)
 
I stuck a Maxtor 2.5" 85Mb right in, got it going with WB3 and the
HDTOOLBOX from a 600's install disk. Its been working fine ever since. If
you really want to see the 1200 at its best, get a multisync, Commodore are
talking about a new Quad-Sync with stereo speakers built into it - look out
 for that one soon.
From: Tony-Preston@cup.portal.com (ANTHONY FRANCIS PRESTON)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Floptical Christmas HELP NEEDED [PLEASE READ!!!]
Date: Mon, 28 Dec 92 09:43:19 PST
Organization: The Portal System (TM)

|FLOPTICAL!!!:
|
|Q:  It will read normal Amiga disks, Amiga high density disks, IBM disks, and
|    it's 20 meg/disk formats?  Right?
|
     It will read/write IBM 720 and 1.44MB formats the Amiga format cannot
     be accessed at this time.  The 20 Mb format works great!

|Q:  How fast is it?  Normal disk speed?  Slower?  Faster?
|
     It is like a slow hard drive(i.e. ST225N), it has a 65ms access time
     and is 3-4 times faster than a floppy.  It is 1/3 to 1/2 as fast as
     my hard drive(Quantum).  I have mine set with 300 buffers.
|Q:  Where can I get the cheapest one? [that will work on an Amiga]
     I sell them for $270 each, disks are $17, send me e-mail for detailS
|
|Q:  Can it be made internal on an A3000?
     I have mine in an A2000, and don't know about The A3000, It mounts
     exactly like a standard internal floppy on my system.
|
|Q:  Anybody out there selling a used one? ;)
|
     I sell only new ones...  
Newsgroups: comp.sys.amiga.hardware
From: mlelstv@speckled.mpifr-bonn.mpg.de (Michael van Elst)
Subject: Re: How programmable is ECS?
Organization: Max-Planck-Institut f"ur Radioastronomie
Date: Wed, 30 Dec 1992 10:57:15 GMT

In <10353@cbmger.de.so.commodore.com> peterk@cbmger.de.so.commodore.com (Dr Peter Kittel Germany) writes:
>Now that sounds like a really nice idea! Anyone volunteering?

Tell that your colleagues. They do not reveal any information on how
to add monitor specs and hardware parameters to the system.

Regards,
-- 
Michael van Elst
UUCP:     universe!local-cluster!milky-way!sol!earth!uunet!unido!mpirbn!p554mve
Internet: p554mve@mpirbn.mpifr-bonn.mpg.de
                                "A potential Snark may lurk in every tree."
From: dcc@dcs.ed.ac.uk (David Crooke)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: HELP!! Major crashes and flickering power light
Date: 21 Dec 92 13:48:57 GMT
Organization: Department of Computer Science, University of Edinburgh

Interesting......I have a friend who had the same problem with Civ. until he did the
1MB chip hack (Rev. 7 A500 with 1.3 (34.3x) I think). The same machine would not run
the old Taito game "Buggy Boy" in 1/2 MB but other 500s and even my old 1000 will.
The HD interference sounds like a 1000 style bus noise problem, but there's a chance
it might be solved by going to 1.3/2.0 

Happy hacking
Dave
-- 
------------------------------------------------------------------------------
David Crooke, Department of Computer Science, University of Edinburgh
Janet dcc@ed.dcs  :  Internet dcc@dcs.ed.ac.uk  :  IP talk dcc@129.215.160.2
Home: 22a Montgomery St., Edinburgh, SCOTLAND EH7 5JS.  Tel: 031 556 0265
Work: JCMB Rm 3310, King's Bldgs, W Mains Rd., Edinburgh EH9 3JZ. 031 650 6013
Newsgroups: comp.sys.amiga.hardware
Newsgroups: comp.sys.amiga.hardware
Subject: WIGGLY MONITOR
From: andy.reed@grapevine.lrk.ar.us (Andy Reed) 
Date: 1 Jan 93 17:31:00 GMT
Reply-To: andy.reed@grapevine.lrk.ar.us (Andy Reed) 
Distribution: world
Organization: The GrapeVine BBS *** N. Little Rock, AR *** (501) 753-8121

I have a Sony 1302 multisync connected to a A1200.  The picture has
a wiggle to it, kind of a snaking effect up and down the screen.  It is
reduced if I drop the VGA Only monitor in the devs/monitors drawer, but
is still apparent.

This never happened with my flicker fixed A2000.

Any suggestions?
From: Tony-Preston@cup.portal.com (ANTHONY FRANCIS PRESTON)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Data/Instruction Cache & BURST modes on 68030? Why/when?
Date: Wed, 23 Dec 92 11:20:30 PST
Organization: The Portal System (TM)
  <hellerS.725061488@batman>

I don't want to call the guy that told you that ignorant, so I wont....
If you turn off the cache, you are in effect forcing the cpu to hit
memory on every memory reference(instruction and data fetches).  With
it on, you sometimes will get a 'hit' which will save several memory
cycles.   With or without 32 bit memory, you will gain as much as a
200% increase in speed with the caches on.  In fact, on my 40 Mhz 
VXL-30, I got a 14.5 rating from MIPS versus a 5.6 rating, almost a 
factor of 300% with cache enabled(I have 2 mbs 32 bit memory).  The
32 bit memory speeds up the system over all by as much as 400 %, but
on top of that you still get improvements with cache enabled.
Newsgroups: comp.sys.amiga.hardware
From: zant0001@student.tc.umn.edu (Eric Zanto)
Subject: AE 1.52M device driver for 2.0??
Organization: University of Minnesota
Date: Fri, 1 Jan 1993 03:09:32 GMT

I know this was asked before by someone, and an answer was posted, but I
only heard about it from a friend, who didn't remember everything.  I NEED
to find out about who I can get this device driver for the AE HD drives,
that make it run in 2.0.  Thanks!

Eric
From: bjm@rommel.UUCP (Brad McMahon)
Newsgroups: comp.sys.amiga.hardware
Subject: Re:  Power-up deal
Distribution: world
Date: 25 Dec 92 17:27:11 +1030
Organization: Private

In article <1gq4l2INN147@mercury.kingston.ac.uk> cs_e445@ceres (Vlod Kalicun) writes:
>kopnicky@great-gray.owlnet.rice.edu (Lyle Warren Kopnicky) writes:
>: 
>:  >> I hear the powerup price of the 4000 '040 version is somthing like $2600
>:  >
>:  >With that price, I guess you get to keep your previous Amiga?
>: 
>:  That's ridiculous!  I can get the 4000 for $2750 as it stands.  A
>
>What ??!!! 4000 cost 2100 UK pounds about $4000 !!?
>

About $AUS 4500 over here in Australia.
about $US 3100....
Gee, aren't WE lucky..


>Thats it Im moving to the US ! ;-)
>
>Regards..
>
>Vlod
>-Amiga Advocate.
>----------------------------------------------
>Amiga - Anything else isn't worth considering
>----------------------------------------------


--
********************************************************
* Brad McMahon               - bjm@rommel.UUCP         *
*                                                      *
* "There's just a fine line between stupid and clever" *
*                                   -Spinal Tap        *  
********************************************************
From: st1my@rosie.uh.edu (Stich, Christian E.)
Newsgroups: comp.sys.amiga.hardware
Subject: 8375 pin-out
Date: 31 Dec 1992 15:23 CST
Organization: University of Houston
Distribution: world
NNTP-Posting-Host: rosie.uh.edu
Keywords: Agnus, 2 MB, chip
News-Software: VAX/VMS VNEWS 1.41    

Somebody posted the pinout of the 8375 a few months back.  If someone still
has a copy of that old post or knows the 8375 pinout (A500+ owners?) please
E-mail it to me.  Also are there any different versions out there?  (I think
it was mentioned that there are 8375 NTSC/PAL versions (since the 'Test/NTSC/
PAL select pin is gone)).  What about the 8375 used in A2000 Rev6.4 mother-
boards (is the motherboard different from earlier versions or is the 8375
pinout for this use the same as the 8372A)?

			Christian
Organization: Penn State University
Date: Sun, 20 Dec 1992 23:07:04 EST
From: Lou Berestecki <KAK151@psuvm.psu.edu>
Newsgroups: comp.sys.amiga.hardware
Subject:    HELP!! Major crashes and flickering power light

I'm having some troubles and I don't want to lay out a lot of money to find
out it might not be anything at all.
I recently purchased Civilization and installed it on my hard drive.  It
crashed often and hard, and didn't display graphics properly.  On a warm
reboot I didn't get a full boot and shut everything down.  When I restarted
the computer I got a jumpy screen and a flickering power light.
The problem is severe and not specific to Civ.  It is happening constantly.
However, it only seems to crash my computer when I run Civ off the hard drive.
I tried Final Copy 2 and that didn't do it.  I tried Civ off the disks and
still couldn't crash my computer.  Thats the long of it.  Short of it follows.
What's the problem?  ANY ideas?  A virus?  Semi-blown chip??

I'm running a 500, orig. chips, 1.2 kick, GVP HD8+ (no it doesn't auto boot
and yes I still get the problem), 3 megs (512 chip, 2.5 fast) etc etc
I had thought it was a virus on my hard drive, but it doesn't autoboot so...
I did a diagnostic on the memory...Not that.  One thing that does happen is
I get a disk not validated when I try to access my HD on bootup.  And the
problem (flickering) is worse when I'm accessing the hard drive.
Hope you can help.  Thanks in advance.
Lou
PS.  Please, no e-mail, as I am using a friends account
From: Aric.Caley@ofa123.fidonet.org
Newsgroups: comp.sys.amiga.hardware
Subject: Re: WB2.1 & Rexxmast
X-Sender: newtout 0.02 Nov 17 1992
Date: 28 Dec 92  22:26:00

> Organization: BBS
> From: jwalkup@terapin.com (Jeff Walkup)
> Message-ID: <jwalkup.2yxz@terapin.com>
> Newsgroups: comp.sys.amiga.hardware
>
> I don't know if it's good or not.  I mean, ARexx *doesn't work* until
> you go hacking around in your Startup-Seq.  Most people don't like to mess
> with that (or don't know _how_ to mess with it).
>
> I can just see it:
>
> Befuddled user: "Hello, Gold Disk?  My ProPage 'Genies' aren't working
> anymore."
>
> Gold Disk: "Are you sure ARexx is running?"
>
> User: "What's that?"
>
> Gold Disk: "Well, are you using WB2.0 or above?"
>
> User: "Heck yeah, I just installed 2.1."
>
> Gold Disk: "Oh, that's Commodore's fault.  You'll have to edit your
> Startup-Sequence."
>
> User: "What's that?"
>
> ad confusium... ad phone-billium... ad tech-support headacheium...

How about simply dragging the Rexxmast icon into the WBStartup drawer?

 -Dances With Coyotes - World's slowest programer-Given that God is infinate-
 -AKA Dances V2.0, Coyote, Critter, Magnet, Major-and  that  the universe is-
 -- Former Net-Lurker - YES, an AMIGA godammit! --also  infinate,  would you-
 --- Still limping along with AmigaOS 1.3  :(  ---like a toasted  tea  cake?-


--- Maximus 2.01wb
From: ehrmann@tschil.informatik.rwth-aachen.de (Guido Ehrmann)
Newsgroups: comp.sys.amiga.hardware
Subject: help needed !!!! (2.5 inch ---> 3.5 inch)
Date: 21 Dec 92 12:45:20 GMT
Organization: Rechnerbetrieb Informatik - RWTH Aachen
NNTP-Posting-Host: tschil.informatik.rwth-aachen.de
Summary: help needed !!!!! (2.5 inch ---> 3.5 inch )

I need some help with my amiga 1200 !

I have a 3.5 inch harddisk and i want to connect it to
the 2.5 inch-plug in the amiga 1200 !!!!!

does anybody know where to get a cable !? (best in germany or europe!)

or can anybody tell me the pin-setting of the 2.5 inch plug !!!!!!!!!
(the one from the 3.5 inch i know !)

many thanks in advance 


   G. Ehrmann 

p.s.: email-adress :   ehrmann@pool.informatik.rwth-aachen.de
From: joeles@cup.portal.com (Joel Edward Swan)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A4000 QC problems?
Date: Wed, 23 Dec 92 17:08:07 PST
Organization: The Portal System (TM)
  <1992Dec21.165107.24150@cbmtor.uucp>

>The normal orientation of the fan in the A4000 is blowing outward. From what I
>understand, this is more efficient at cooling, and avoids getting dust in the
>machine 8-).

1. "More efficient cooling."
   Well, not exactly more efficient, but more even.  It allows cooler air to
   hit more of the important components rather that heat up first while
   passing through the PS.

2. "avoids getting dust."  NOT.  Because the air sucks in all the other
   vents, dust gets on -everything-.  Pulling the air in only one location 
   gives you the opportunity to filter the air.  

Notice, however, that Commodore made no provision for such a filter.  That's
because the designed is for air to blow out the PS and be pulled in through
all the vents.

>
>                                                Steve Vetzal

-Joel
-------
   ========================================================================
  / Joel E. Swan....Pres./...Media Specialties, Ltd., Oak Forest, IL.USA  /
 / & Senior Producer..../...Moody Broadcasting Network, Chicago, IL. USA /
/ Portal ID: joeles..../...joeles@cup.portal.com                        /
========================================================================
Newsgroups: comp.sys.amiga.hardware
From: johnn@eskimo.com (John Navitsky)
Subject: A1200 Summary please?
Organization: =>ESKIMO NORTH (206) 367-3837 SEATTLE, WA.<=
Date: Wed, 30 Dec 1992 19:15:48 GMT

Hello,

I've not been keeping up lately and was wondering if someone could summarize
the specs on the A1200?  All I know is that it is in an integrated package
and has the AGA chip set.  I did follow the A4000 discussions so could use
that for reference.  As an aside, I currently have an A2000 w/SCSI disk &
a A1000 that I've been thinking of upgrading or replacing.  I'm afraid I
don't want to spend a lot so was thinking that moving from the A2000 ->
the A1200 might be a good move.  (I think I would like to keep the A1000 :-)
Any thoughts on this?  I suspect the A1200 has expansion similar to othe
A500/A1000?  Also list or estimated pricing would be helpful.

Thanks!!!

-- 
   ---------------------------------------------------------------------------
    ||   John Navitsky   `,`,`,`,       e-mail >>  johnn@eskimo.com        || 
   ---------------------------------------------------------------------------
From: mr_scary@lakes.trenton.sc.us (Chris Hurley)
Newsgroups: comp.sys.amiga.hardware
Subject: A3000 SCSI Hard Drive Trouble
Date: Sat, 19 Dec 92 02:06:10 EST
Reply-To: mr_scary@lakes.trenton.sc.us (Chris Hurley)
Organization: Lakes Public Access

I recently hooked up an IBM WDS3200 200mb SCSI hard drive to my Amiga 
3000 with internal 50mb hard drive.
        The IBM drive seems to work fine, except that when I reboot the 
machine, after a split-second, the IBM HD light comes on and stays lit 
(along with the HARD DISK light on the A3000) and the system refuses to 
boot until the IBM hard drive is turned off.
        Anyone know how I can fix this or should I take the drive back 
for a refund?
 
email:   mr_scary@lakes.trenton.sc.us
Newsgroups: comp.sys.amiga.hardware