HDTenEightyP/NetNews huggingface dataset:
From: bloc1469@ee.ee.uwm.edu (Gregory R Block)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: The "cool" fan debate
Date: 24 Dec 1992 06:05:25 GMT
Organization: Electrical Engineering Dept. University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.2.33

The problem is that with positive pressure airflow systems, the
problems come forward thusly:

1) It is extremely difficult to arrange airflow in a way that brings a
direct current of air across any one specified area.

	This is solved in negative-pressure systems by placing a vent
	in such a way that the air coming in would blow over the area
	to be cooled

2) Positive pressure airflow dynamics change the moment the physical
layout changes.  Specifically, let's say we have a positive-airflow
2000, with a vent on the left side of the case, next to all of the
slots.  The problem here lies in that dropping in ONE card will cease
airflow across a huge expanse of the board now, and on top of that,
any expansion cards in the machine will be cooled very poorly.

3) It is extremely difficult for a positive-pressure system to cool a
large area properly without making use of more than one fan.

These three problems are the reasons behind not using
positive-airflow, even if it makes your computer that much cleaner on
the inside.

Greg

--
(: (: (: (: Have you overdosed on smileys today?  Why NOT!?! :) :) :) :)
(: "Our father, who art in Iowa, Hollow be thy head, Thy ideas run    :)
(:  Thy will be done, At Commodore as it is at Apple"  -Dan Barrett   :)
(: (: (: (: (: (: (: (: (: (: (: (: () :) :) :) Wubba, the Dark Angel :)
From: bburdeau@redorc.chi.il.us (Bob Burdeau)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Suggestion Wanted on Drawing Pads
Date: 28 Dec 92 13:26:56 CST
Organization: Red Oracle Bbs/Network

I am interested in your findings on these drawing pads also.
Are they worth it?

=-=-=-=---===-===-==-=-====-=-=-=-==--===-=-====------=-=====---=-=-==---==-=-
  Bob Burdeau - Soon-to-be-famous artist       >  You can do anything     <
 mail: bburdeau@redorc.chi.il.us               <  if you try enough.      >
                                               >                          <
=-=--==--=-=-=-======-=-=-=-==--=---=-=-=-=-===--=-=-=-====--==-===-=-=-==-==-
From: bytey@werple.apana.org.au (Chris Hames)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: To *ALL 1200/4000* multisync owners!
Date: 30 Dec 1992 12:40:33 +1100
Organization: werple public-access unix, Melbourne
NNTP-Posting-Host: werple.apana.org.au

dseaman@oread.cc.ukans.edu writes:

>Does not having the 15 Khz mode very restrictive? A couple of PD hacks
>claim to promote all screens to a resired resolution/frequency. Do
>these really work, and what if any programs refuse to be promoted?

 
PROMOTING DISPLAYS TO SCANDBL MODES
===================================
 
Program uses OS to OpenScreen
-----------------------------
 
     If the program is not bootblock loader type, you double click the
DBLNTSC or DBLPAL monitor first then you execute the new Degrader with the
PROMOTEALL option and it should be fine.  Another option is to turn
promotion
on from preferences but this doesn't catch all cases (ie programs which
specify the monitor as PAL or NTSC - Dpaint 4.0).
 
     If the program does load from the bootblock, you do have a change if
you
run the bootblock from a program (not by reseting).  But you must of course
make sure that promotion will occur.
 
Program uses graphics primatives (LoadView etc)
-----------------------------------------------
 
     This looks like a bit of a hack but I beleive it is possible with some.
 
Program hits the hardware, does own copperlists etc
--------------------------------------------------
 
     This is what most bootblock loading type games do and many others as
well.   Currently I know of no way.  I tried having a double scan screen
just like the screen the program was going to open before I tried it.  No
go,
it looks like BLPCON0 needs a bit set for a start and since that is always
written to by the program that hits the hardware no hope.
 
Main Problems
-------------
 
You need all that monitor junk before you can run a mode that requires that
monitor.
 
Programs that hit the hardware, hit registers that must be set in a certain
way by the looks of it.
 

>-- 
>DSeaman@Oread.cc.ukans.edu
>Derek Seaman
-- 
Chris Hames
Internet: bytey@werple.apana.org.au  and  uunet!cbmvax!cbmaus!hames!chrish
FidoNet: 3:633/353
Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.misc
From: walrus@wam.umd.edu (Udo K Schuermann)
Subject: Re: Turning off print timeout
Organization: University of Maryland, College Park
Distribution: usa
Date: Tue, 22 Dec 1992 07:31:41 GMT

In article <1992Dec22.001631.15232@doug.cae.wisc.edu> kolstad@cae.wisc.edu (Joel Kolstad) writes:
>
>Hi,
>
>	I just bought a new printer that has a built in 48K buffer.  This
>is great, except that the friendly Amiga goes off, fills up the buffer, and
>then has to wait for awhile before the printer will accept more data (I
>think the printer waits until a couple K is free again or something).  This
>makes the Amiga unhappy, and it's constantly putting up those silly
>"Printer Trouble -- Check Wiring, Paper, etc." requestors.
>
>	So how do I tell the Amiga to wait forever for the printer?

I solved this problem by patching the driver file.  The standard timeout
value seems to be 30 seconds, which is 1E in hexadecimal.  That value is
stored in the driver file some 13 bytes BEFORE the name of the printer.  If
you do end up modifying the driver file this way, be sure to make a backup
copy of the driver file (in DEVS:printers) and be prepared for the
possibility of a crash in case that you messed up or in case that I am
wrong or inaccurate in my description ;-)
	I had good luck with my ancient Epson FX printer, changing the
timeout from 30 (1E) to 60 seconds (3C)

I hope this helps and that someone will correct me should I be wrong.

Question: do WB 3.0 printer drivers offer a timeout through preferences?

 ._.  Udo Schuermann
 ( )  walrus@wam.umd.edu
From: barrett@astro.cs.umass.edu (Daniel Barrett)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: WB2.1 & Rexxmast
Date: 29 Dec 92 04:46:47 GMT
Reply-To: barrett@astro.cs.umass.edu (Daniel Barrett)
Organization: BLAZEMONGER INCORPORATED

In article <1992Dec28.184813.16009@cbnews.cb.att.com> itch@cbnews.cb.att.com (richard.m.brack) writes:
>Not saying it's good or bad, but all you really have to do is put Rexxmast
>in the WBstartup drawer.

	I vote for executing it from s:user-startup instead.  What
happens if you upgrade to (say) 3.0 and there's a new version of ARexx?
The old one will still be sitting in WBStartup and getting executed
on bootup.  Or is the Workbench installation program smart enough
to find things in sys:WBStartup?

                                                        Dan

 //////////////////////////////////////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
| Dan Barrett -- Dept of Computer Science, Lederle Graduate Research Center |
| University of Massachusetts, Amherst, MA  01003  --  barrett@cs.umass.edu |
 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\/////////////////////////////////////
Newsgroups: comp.sys.amiga.hardware
From: zarthac@bradley.edu (Matthew Simmons)
Subject: Re: Backing up on a VCR
Organization: J. Random Misconfigured Site
Date: Mon, 4 Jan 1993 02:57:34 GMT
X-Newsreader: TIN [version 1.1 PL8]
X-Posted-From: cs1.bradley.edu
NNTP-Posting-Host: sol.ctr.columbia.edu

JIM GRAHAM (graham@venus.iucf.indiana.edu) wrote:
: In article <3JAN199318154970@md2.huji.ac.il>, robi@md2.huji.ac.il (Dr. Wartenfeld Robi) writes...
: >     Hello.
: >  I once saw some instructions on building an interface whuch allows
: >connecting the amiga parallel port to a Video Cassette recorde and backing up
: >the hard disk to the VCR.  If anyone has those instructions please send a
: >copy to me.
: >     Thanks.
: >        Robi.
: > 

: Me too!

: Thanks,

: Jim Graham 

:         -> ->Disclaimer: I do not speak for my company. <- <-
:                           Neither do they speak for me.
:  ______________________________________________________________________
: | Internet: graham@venus.iucf.indiana.edu                              |
: |           dolmen!jgraham@moose.cs.indiana.edu                        |
: | BBS:      The PORTAL DOLMEN BBS/ParaNet ALPHA-GAMMA (sm) (9:1012/13) |
: |            (812) 334-0418, 24hrs.                                    |
: |______________________________________________________________________|

Ditt....

e-mail to zarthac@cs1.bradley.edu
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 11:28:15 PST
Organization: The Portal System (TM)
  <smcgerty.725067816@unix1.tcd.ie>

It is simple.  if you have both data and instructions in the same
cache, you have both data and instructions bumping each other in
the same cache.  The net result is you can have an instruction that
is replaced by data and a data item that is replaced by instruction
that you would cause a lose of a hit on the cache.  Cache obeys a
square law that says to double the hit rate, you need to quadurple the
cache size(4 times as much cache to get twice the hit rate).  By going
to an 8K cache, you have double the cache size, but have twice the
amount of access to it.  By having 2 separate caches, you get almost the
same performance, but don't have data and instructions hitting of the
same cache locations.  What I mean is If a data item caches to location
0 in the cache and the instruction also does, the motorola way will be
faster.  Otherwise they will be the same speed.  If the instruction mix
is spread of 4K or less, motorola will be the same speed, if over 8K the
intell way may be faster.  In general, I think the motorola way will pay
off with slightly faster operation over all.   This is just an opinion.
Newsgroups: comp.sys.amiga.hardware
From: itch@cbnews.cb.att.com (richard.m.brack)
Subject: Re: WB2.1 & Rexxmast
Organization: AT&T
Date: Mon, 28 Dec 1992 18:48:13 GMT

In article <jwalkup.2yxz@terapin.com>, jwalkup@terapin.com (Jeff Walkup) writes:
> Rick_Lang@amusers.UUCP (Rick Lang) writes:
> 
> > This is a good change since many people would comment [Rexxmast] out of the
> > Startup-sequence file in order to custom define their rexx environment
> > via user-startup which was executed before the WB2.0 rexxmast.
> 
> 
> 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).

Not saying it's good or bad, but all you really have to do is put Rexxmast
in the WBstartup drawer.  Of course then you get this little window that
pops open for a few seconds every time you boot up saying rexxmast is active
or some such...


Rich...
-- 
{ the itchman cometh   /-/         _          i don't want to be your angel }
{ itch@cbnews.att.com /-/        _|_|_          i want to be your witch!    }
{ att!cbnews!itch \-\/-/         ( * )tch                 -yello            }
{                  \/\/           /^\                                       }
From: jimomura@tndb.UUCP (Jim Omura)
Newsgroups: comp.sys.amiga.hardware
Subject: External HD Floppies
Distribution: world
Date: 30 Dec 92 23:48:50 EST
Organization: Not an Organization


     Apparently, the reason why the A1200 doesn't have an HD floppy
is because the A4000 drives were too tall.  But that's only important
for the low profile A1200 case.  An external floppy could be any
height, so long as some manufacturer made a case to fit.  So the question
I have is whether anybody knows of any company who has announced an
external 1.7 Meg external floppy which would be usable on an A1200
or, more to my interest, on an A500 with with DOS 2.1?

--

Jim Omura, (416) 652-3880
'jimomura@lsuc'
Organization: Queen's University at Kingston
Date: Sun, 3 Jan 1993 14:46:51 EST
From: <LEEK@QUCDN.QueensU.CA>
Newsgroups: comp.sys.amiga.hardware
Subject: 2.0 UNIT_MICROHZ timer questions...

I have just installed the 2.04 ROM into my A1000.  I have read that 2.04
"fixes" some of the timer problems - namely the time delays are more
accurate than the 1.3, right ?

I am having some timing problems with the GAL programmer I designed and
built.  The programmer works fine under 1.3 and only 25% of the chips get
programmed properly under 2.04.  I can only assume that timing problems
are ones to blame.

For timing that are less than 100uS, I am using a CPU timing loop that
reads off a memory location in the peripheral chip area.  Since these
delays are for minimum time delays for some of the signals, the actual
delay time does not matter as long as the minimum delay criteria is
met.  The 8250 peripheral chip are clocked to 716KHz E clock and read
cycles are at least 1.4uS long reguardless of CPU speed.  I have
previously checked the timing of 100uS delay and it came out to be
100.5uS on my 18MHz 68020 system.  The speed of this routine is
independent of OS version.

For the more critical programming pulses, I am using the UNIT_MICROHZ
timer for time delays from 10mS to 100mS.  The actual programming
routine runs at priority of 10.  To verify that the OS overhead wasn't
the problem, I have just tried setting all the system tasks to 9 and it
doesn't help.

Are the timing accurately enough to +/- 10% ? ie +/- 1mS for 10mS delays
and +/- 10mS for 100mS.  BTW I do have the full programming specs from
the manufacturer.

The hardware runs on the parallel port.  I opened the parallel.device
from the OS before poking the 8250 registers.

Are there anythings I have overlooked ?  Anything that might affect the
parallel port or the time delays ?  For now I guess I'll program
stuff under 1.3.

Thanks in advance.

K. C. Lee
Elec. Eng. Grad. Student
Newsgroups: comp.sys.amiga.hardware
From: 22black@sol.cs.wmich.edu (Martin Black)
Subject: Re: Creative Computers A2000 package for 1499...Inside?
Organization: Western Michigan Univ. Comp. Sci. Dept.
Date: Mon, 28 Dec 1992 18:23:58 GMT

chrisr@ersys.edmonton.ab.ca (Chris Ringe) writes:

>Has anyone ordered the awesome deal from Creative Computer for the A2000?

>The package includes: '030 25Mhz ACCEL.
>                      5M Ram
>                      100M Quantum
>                      and A2000 (of course)

>Does anyone, who has ordered the package, know what board rev., KS, AGNUS,
>DENISE the A2000 comes with?  The package sound TOO good to be true.  Possibly
>old hardware...

Why is this a great deal?  You can get an a3000 25mhz with 100M drive for
that much.
Then you will have faster graphics.

Martin

-- 
Bill SATAN LIVES Gates is the biggest enemy to personal computers ever.
From: cr215@cleveland.Freenet.Edu (Mike Grossman)
Newsgroups: comp.sys.amiga.hardware
Subject: Video Toaster
Date: 4 Jan 1993 00:46:43 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


Can anyone give me an address or phone number where I can get in touch with
the folks who make the Video Toaster? I think they are located in Topeka
Kansas. Drop me a note in e-mail, please.

Thanks...
From: brendan@gu.uwa.edu.au (Brendan Langoulant)
Newsgroups: comp.sys.amiga.hardware
Subject: Killing the System!!!
Date: 23 Dec 1992 14:31:10 GMT
Organization: The University of Western Australia
NNTP-Posting-Host: mackerel.gu.uwa.edu.au

Greetings all,
   I have tried to kill the Amiga Operating system using the following
method.
First Capture current copper list from graphics library.
Next, turn off dma, adkcon, and then the cia's.

This works most of the time.  The problem is when I try to get it back. It
may or may not come back.

It fails once in every 10-15 times.

Any ideas?

--
--
Brendan Langoulant
brendan@gu.uwa.edu.au
Newsgroups: comp.sys.amiga.hardware
From: "roger bouchard" <roger.bouchard@canrem.com>
Subject: attn commodore:
Reply-To: "roger bouchard" <roger.bouchard@canrem.com>
Organization: Canada Remote Systems
Distribution: comp
Date: 1 Jan 93 06:04:10 EST

BE>in hardware.  Just like every workstation has a unique hostid.
BE>That would allow software vendors to provide software that is
BE>tied to that hostid or multiple hostids.
BE>

And when the chip that produces the id fails ?

I had that happen around here . the replacement chip cost US , the
AUTHORISED REPAIR CENTER for that machine at the time , $1000 US for a PAL
with it's verification fuse blown .

BE>Some people complain that this prevents them from chucking their
BE>hardware and moving their software to a newer machine, but I have
BE>found that the turnaround time that is necessary to obtain a brand
BE>new license key from every Unix software vendors that I have dealt
BE>with has been less than half an hour, especially if you have a FAX
BE>machine.
BE>

even those you bought over the BBS's , or the mailorder houses or
clearinghouse ? 

WHAT ?! you never bought your UNIX applications in places like that ?

BE>The only problem is that for Commodore to do so would offend the
BE>target market and it would hurt their hardware sales.  Since they
BE>are not really in the software business their political powers
BE>that be can't really be expected to care about that benefit it
BE>could bring to their third party software vendors.
BE>
BE>Ben


the problemS would be

-higher production cost for the hardware ; EACH MACHINE would need at least
 one chip unique to it . not desireable in a low cost machine

-administration cost of the scheme like when replacement numbers are needed
 for both hardware and software vendors .



you are falling prey of the idea that what is good in one case MUST be good
in all cases . not here . what works in a multithousand dollar machine
market does NOT make sense in a cut throat home market .

in this case , serializing of EACH machine's software is simply NOT
practical .



---
 * Amiga-Reader V2.00 * Cogito, ergo spud: I think, therefore I yam.
--
Canada Remote Systems  - Toronto, Ontario
World's Largest PCBOARD System - 416-629-7000/629-7044
Newsgroups: comp.sys.amiga.hardware
From: huff@cactus.org (Matthew Huff)
Subject: A2090 & A2091 in A2000HD
Organization: Capital Area Central Texas UNIX Society, Austin, Tx
Date: Sun, 27 Dec 1992 20:58:08 GMT

Because of my purchase of used Amiga hardware I have ended up with a situation where I need to use both a A2090 MFM & SCSI HD controller and a A2091 HD controller.  What do I need to do to get this to work? I don't have any documentation for the A2090 or A2091.

I also am running WB 2.1 with 2.1 roms in a A2000HD
-- 
Matthew Huff              |   huff@cactus.org
                          |   {...}!cs.utexas.edu!cactus.org!huff
Work Phone: 512-467-0222  |
Home Phone: 512-339-4716  |
Newsgroups: comp.sys.amiga.hardware
From: zarthac@bradley.edu (Matthew Simmons)
Subject: Re: Tape Backups for Amiga
Organization: J. Random Misconfigured Site
Date: Sun, 3 Jan 1993 11:10:44 GMT
X-Newsreader: TIN [version 1.1 PL8]
X-Posted-From: cs1.bradley.edu
NNTP-Posting-Host: sol.ctr.columbia.edu

Don - Hirschfeld (DonH@cup.portal.com) wrote:
: Unless the Colorodo has a SCSI connection, it won't work with the amiga.
: They usually operate off the floppy controller of the PC.


I was looking into it a while ago and somebody emailed me saying that
there is a company which makes interfaces between the cheap CMS drives
and the amiga...

Newsgroups: comp.sys.amiga.hardware
From: danb@shell.portal.com (Dan E Babcock)
Subject: Re: Stupid question of the week:  Why not a VGA card in your A2
Organization: Portal Communications Company -- 408/973-9111 (voice) 408/973-8091 (data)
Date: Thu, 24 Dec 1992 05:47:32 GMT

In article <boinger.084p@myamy.hacktic.nl> boinger@myamy.hacktic.nl (Paul Kolenbrander) writes:
>In article <jbickers.0lqj@templar.actrix.gen.nz> jbickers@templar.actrix.gen.nz (John Bickers) writes:
>> Quoted from <Boinger.07si@myamy.hacktic.nl> by Boinger@myamy.hacktic.nl (Paul Kolenbrander):
>> > In article <1992Dec13.030321.19353@spartan.ac.BrockU.CA> tmc@spartan.ac.BrockU.CA (Tim Ciceran) writes:
>> 
>> > > Sorry, the Golden Gate won't allow you to do this. Besides, without RTG,
>> > > how would you display Workbench? 
>> > 
>> > Are you sure we are talking about the same GoldenGate II? I am
>> > pretty sure the docs mention that it is possible. And displaying
>> 
>>     I recall the same thing. The only problem is what does one code as
>>     a "device driver", when the current OS doesn't have RTG.
>
>Maybe the same type those German guys Dave H. was referring to are 
>using? It should be possible. The German Retina and Domino cards do
>things along similar lines... I'm no device writer tho. Anybody here
>more qualified wanting to anwer this? Or maybe write a driver? ;-)

As I understand it the Domino-like cards basically replace the entire graphics.
library. (A lot of system routines anyway...). This has some disadvantages, like
1. It's hard to write/debug (a lot of messy code). and 2. You have to play a 
game of catch-up with Commodore as new routines are added to graphics.lib.
In short, it's not a routine matter to crank out a "driver" of this kind...it
requires some rather extraordinary hacking. RTG, RTG, RTG...:-) 

Dan
From: msp@msen.com (Jerry Foster)
Newsgroups: comp.sys.amiga.hardware
Subject: Irwin Tape Drive on an Amiga
Date: 29 Dec 1992 05:26:48 GMT
Organization: Msen, Inc. -- Ann Arbor, Michigan
NNTP-Posting-Host: garnet.msen.com
X-Newsreader: TIN [version 1.1 PL8]

We have an overabundance of the ancient standard for pc tape drives at
work - the Irwin 20 MB mini.  It is connected to the pc via the floppy
controller.  My boss said I could have one.  Is there any way possible to
connect  it to my Amiga 2000?  Probably not, but I wanted to check first.
Thanks in advance.


--
  //  Jerry Lee "3P"
\x/   e-mail: jfos@msp.com
Newsgroups: comp.sys.amiga.hardware
From: harlock@rahul.net (Mike Harlock)
Subject: Opinions on this DERRINGER acellerator/ram board?
Keywords: derringer acellerator
Organization: a2i network
Date: Fri, 1 Jan 1993 14:04:02 GMT

HiLo.  Flipping through the January 1993 issue of AmigaWorld, I see
an advertisement for what looks like something that is too good to be
true for the price:

The CSA Derringer Acellerator:
An acellerator board that fits inside an A1000, 2000 or 500, that
has a 25 MHZ 030 CPU with 6881, and room for 32 megs of 32 bit ram,
that comes with 4 megs of ram (remaps kickstart), for only $500?!

I am considering buying it for my spare A1000, which I may be running a
BBS on shortly.  Has anyone had any experiences with this piece of hardware?
...oh, and, where does this thing plug in? It looks like one of those
things that sits on the motherboard and replaces a few chips.  The reason
I am wondering is I still need to fit a SCSI controller on the 1000.


Input/reviews appreciated.
--Mike

-- 
 _____________________________________________________________________________
| harlock@rahul.net  (Mike "Harlock" Massee)| Arcadian Productions    Amiga!//|
|   Head Guru, Foothill A.N.I.M.E. Club     | Subtitling/Graphics/Cons   \\// |
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: dleslie@phakt.usc.edu (David Leslie)
Newsgroups: comp.sys.amiga.hardware
Subject: A1000 pal(as in NTSC) conversion - possible?
Date: 28 Dec 1992 22:49:15 -0800
Organization: University of Southern California, Los Angeles, CA
NNTP-Posting-Host: phakt.usc.edu


I have an A1000, and I'd like to run it in PAL video mode. What does
it take to convert from NTSC to PAL? Is there a PAL agnus that can
be swapped? Thanks!

Dave
 /  Amiga  ///    |  U.S.C. Trojans  | O Bar  | David Leslie        \
|         ///     |     Fight On!    | E O    |                      |
|     \\\///      |        --        | Meu    | dleslie@usc.edu      |
 \     \XX/ A1000 |     Go Kings!    | Lar!   |                     /
Newsgroups: comp.sys.amiga.hardware