HDTenEightyP/NetNews huggingface dataset:
From: daveh@cbmvax.commodore.com (Dave Haynie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 14.xx & 7.xx Mhz, why?
Keywords: 68000
Date: 10 Nov 92 22:19:45 GMT
Reply-To: daveh@cbmvax.commodore.com (Dave Haynie)
Organization: Commodore, West Chester, PA

In article <1992Nov5.224246.25432@ifi.uio.no> stigo@ifi.uio.no (Stig Arne Olsen) writes:
>
>Can some guru :-) here tell me why C= are clocking the processors below what
>they were made for? They do not seem to do it with the faster processors,
>but why are the Mc68000 just 7 and Mc68020 in the A1200 14Mhz? Has it something
>to do with dma-cycle timing? 

It has everything to do with Chip RAM timing.  Chip RAM lives on the synchronous
Chip bus, which is based on a 7.09-7.16MHz clock (actually, two of them).  It's
much simpler to interface a processor to this bus if you make its bus clock the
same clock as used for the Chip bus.  There are a number of problems that you
must solve when interfacing mutually asynchronous systems that go away with
synchronous designs.  So the A1000, A2000, A500, A600, A1200, and A2500/20 were
each based on synchronous designs.  There's little point in running a CPU a 
8MHz, since your synchronization delays would more than make up for any gain
in CPU speed.  At 14MHz-16MHz, a faster CPU would help caches and with Fast RAM,
but it complicates the design.  The A2500/20 was 14.3MHz because I hadn't 
figured out all the details of a safe synchronous design at that point, while
I suspect the A1200 was synchrouous to save cost and because, in a system with
only Chip RAM, a 14.3MHz synchronous design should be faster than a 16MHz
asynchronous design.  At speeds of 25MHz and beyond there's no choice,  since 
there's no way to remain truely synchronous there anyway.

>And why are the 68030 in the A3000 running at the full 25Mhz, if this is a 
>problem?

It's not a problem per se, it's a tradeoff.

-- 
Dave Haynie / Commodore Technology, High-End Amiga Systems Design (cool stuff)
 "The Crew That Never Rests"  {uunet|pyramid|rutgers}!cbmvax!daveh   BIX: hazy
		SCIENCE:	"I'll believe it when I see it"  
		RELIGION:	"I'll see it when I believe it"
From: bobl@bobsbox.rent.com (Bob Lindabury - SysAdmin)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: PCMCIA card slot
Date: 8 Nov 92 05:08:54 GMT
Organization: Raven Enterprises -- Piscataway, NJ USA
X-NewsSoftware: GRn 1.16f (10.17.92) by Mike Schwartz & Michael B. Smith

In article <36788@cbmvax.commodore.com> grr@cbmvax.commodore.com (George Robbins) writes:
>
> You might ask "where are all these cards"?  At the moment anything fancier
> than a SRAM card seems to be moving from vapor to limited availability.
> At first everyone was talking about what could be done, and there was lots
> of handwaving, but now there seem to be real devices moving into the
> marketplace.
>
> --
> George Robbins - now working for,     work:   to be avoided at all costs...
> but no way officially representing:   uucp:   {uunet|pyramid|rutgers}!cbmvax!grr
> Commodore, Engineering Department     domain: grr@cbmvax.commodore.com

Hayes has a couple of PCMCIA modems available now I believe.  If I get
the chance I will pull down the information and post it here if there is
interest in such items.

--
 Bob Lindabury

InterNet: bobl@bobsbox.rent.com                | Raven Enterprises
    UUCP: ...rutgers!bobsbox!bobl              | 25 Raven Avenue
  BitNet: bobl%bobsbox.rent.com@pucc           | Piscataway, NJ 08854
  Home #: +1 908/560-7353                      | +1 908/271-8878
From: Roger_Nordin@atb.bbs.bad.se (Roger Nordin)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A1200 keyboard (A600 owners?)
Date: 7 Nov 92 20:34:03 GMT
Reply-To: Roger_Nordin@atb.bbs.bad.se (Roger Nordin)
Organization: ANet Test Bench, Karlstad, Sweden
OD-Comment-To: Internet_Gateway

> The key beside the left shift most likely has the < > symbols on
> it, and I have no clue what the other one is.  I'd guess \ |,
> since that's what's there on this silly DEC keyboard I'm using,
> but then what's in the top row?

Well, on the Swedish keymap, the key to the left of Enter, above Shift, is * 
and ' (* shifted).

The keys you mention is left in the top row, to the left of backspace.

                        _       .    __
    Roger Nordin     _ //      /!Net /est Bench
 2:203/602.0@fidonet \X/  Internet: Roger_Nordin@bad.se

--- 
Newsgroups: comp.sys.amiga.hardware
From: dmacphee@nyx.cs.du.edu (Don mac phee)
Subject: Re: Floppy size in 1200?
X-Disclaimer: Nyx is a public access Unix system run by the University
	of Denver for the Denver community.  The University has neither
	control over nor responsibility for the opinions of users.
Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept.
Date: Fri, 6 Nov 92 00:36:22 GMT

In article <36692@cbmvax.commodore.com> grr@cbmvax.commodore.com (George Robbins) writes:

>Arghh, I post a simple answer and get a petite diatribe in return.  I'll admit
>that a HD floppy would be nice, perhaps very nice, but I'm not sure whether
>it is really essential on a machine with a built-in hard drive capability.
>
>Is this really a buy/no-buy point for you?

 Seeing as how I'm not looking at the 1200, you can weigh what I say.

 The Macs I have to work with use the SUperDrive. The PC's I work
with have, without exception, HD drives. And this is in a 
University situation! Having the ability to read, if not write the
data in a common interchange format is USEFUL. 

 The drive is there, the technology is there, and the need is there.
Why not have it on the low-end Amiga?

 The common arguement given by C= is that 90% of the masses have no use for
a feature in a low-end machine. I can see several for the 1200:

 Data interchange: From exchanging nude .gifs to Postscript files.
 Data backup: Having to use 1/2 the number of disks to back up that
             'optional' drive.
 Larger system disks: For those that DON'T HAVE the 'optional' drive,
             you can pack on something OTHER than the system onto the
             system disk. (Memacs, arp.library, seomthing other than
             Topaz 8, an archiver....)

         BTW: *I* run a 1 disk system floppy, and have *2* drives. The
             thing *I* hate the most is swapping my system disk in and out
             for ANY reason.

 Now, again, I disclaim, I'm not your average Amiga user. I'm sort of on the
extreme low-end. These are things I'd pay $100 extra for. Having an optional
external HD floppy would also be a marketing plus. I can make a LOT of money
if C= would supply me with a stream of HD disks.

 I really don't understand why C= isn't buying these things like hotcakes
and selling them through their dealer network. Save for the fact that C=
might get stuck with a large inventory of DD drives... :)

 A HD disk isn't a major selling point to me. It could be construed as
a value-added option that's going to be used by 100% of the Amiga users.

--
Amiga /s/   Donald Mac Phee  \\\ agimA  Should the message regarding whether
2000 /s/ Rpg110@Uriacc.Bitnet \\\ 0002 or not you want to post your rantings
 \Perot dmacphee@Nyx.Cs.Du.Edu \\\///  come AFTER you've written your flame?
  \XR/ Personal_09@Ecl1.Uri.Edu \XX/   1 in 5 for Perot. Says something?
Newsgroups: comp.sys.amiga.hardware
From: earl@rtsg.mot.com (Brent R. Earl)
Subject: Hard monitor reset from 2.04(Is this normal?)
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Fri, 6 Nov 1992 03:58:41 GMT

I am getting a nice "snap" reset on my monitor when I start
up under 2.04.  This doesn't occur for 1.3.  I am wondering
if this occurs for others.  A friend with a nec3d says that
he doesn't have (hasn't noticed) anything like this.

My setup is: b2000 rev4.4 c=1950 monitor, usually in pal
display mode through hardware hack (grounded crystal etc)
1m agnes chip.  I don't have the ecs denise yet.
2.04 ks 37.175, wb 37.67.  I also told 2.0 not to start
up interlaced.
From: kevinm@ocf.berkeley.edu (Kevin Miller)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: REALLY confused about monitors - for a1200
Date: 13 Nov 92 22:29:24 GMT
Organization: U.C. Berkeley Open Computing Facility
NNTP-Posting-Host: tornado.berkeley.edu

In article <1992Nov13.135835.29442@decuk.uvo.dec.com> hilton@bahtat.dec.com writes:
>
>1200 has a number of different modes:
>
Here's the way I understand it.  If I've made any mistakes, feel free to 
correct me.

>    1280 x 400
Will work on 1084 (interlaced) or VGA (non-i)

>    1280 x 200
Will work on 1084 (with scan lines) and VGA (no scan lines). Games will not 
work with VGA monitor.

>    800 x 600
Multi-sync required.

>    640 x 690
MS required.

>    640 x 480
1084 (interlaced), VGA (non-interlaced)

>    640 x 400
Same as 640x400

>    640 x 200
Same as 320x200

>    320 x 400
>    320 x 200
1084 will work with both, but 320x400 will flicker and 320x200 will have scan
lines.  VGA will work wil both, without flicker and scan lines.  In general,
games will not run if you use the VGA monitor because they games
don't tell the computer to promote the screen.
 
>    All modes offer 256,000 colours from a palette of 16.7m.

Yep.

>    Would a SVGA monitor be able to DISPLAY all of these, 
>    with/without flicker?
>    Would a multisync be able to DISPLAY all of these 
>    with/without flicker?
>Would the 'standard' C= 1084 monitor work ok?

A proper multi-sync will work in all modes (like the C= 1960), but opting
for either a VGA or 1084 limits you to certain modes. If you have the money,
get the MS; otherwise look at the screens that the 104 and VGA screen will
give you and choose.

>If anyone could explain what overscan and interlace mean,
>and what they would mean to a user, I would also be grateful.

Interlace is a way of displaying images.  Non-interlaced images are displayed
line after line.  Interlaced images are a little differen: First the odd lines
are displayed, and then the computer/monitor goes back and displays the even
lines.  This causes the characteristic "flicker" that most people hate.  
Flicker in the 640x400 modes will be worse than flicker in the 800x600 modes.
 
Overscan means that the screen goes beyond the edge of the viewable monitor 
space.  This is the case on TV's for example.  Look at most IBM clones.  There
will be a 1" or so strip all around the screen that it black.  An overscan
screen would have the image fill the entire screen plus a little more.  This
is very important for video work.
Newsgroups: comp.sys.amiga.hardware
From: Winfried.Krueger@arbi.informatik.uni-oldenburg.de (Winfried Krueger)
Subject: Re: 10 MB fastram onb a2000: technical question
Organization: University of Oldenburg, Germany
Date: Fri, 13 Nov 1992 11:08:07 GMT

markus@techfak.uni-bielefeld.de (Markus Illenseer) writes:

>In article <frits.721490862@galaxy> frits@ph.tn.tudelft.nl (Frits Kuijlman) writes:

>> I have no plans at all of buying it, but I am interested in how they might
>> have done it. If I read the hardware manual(1.3) I have at home correctly
>> the memory map of the a500/a2000 allows for 8 MB fastram, 2 MB chipram and
>> the rest is reserved for chip registers and so on. Where might they have put
>> the extra 2 MB fastram?

> It's on the card. They use the 2MB Aguns of course, too.

Hey, do you believe Frits is that stupid? Don't you think he's asking
for the address space? Or did you just forget to place a smiley?

[...]

>> Just curious,
>>     Frits
>> --

>Markus Illenseer       EMail: markus@TechFak.Uni-Bielefeld.de

winnie.
From: roger@kih.no (roger aas)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Composite video input on a 1084
Date: 5 Nov 92 17:25:22 GMT
Organization: Kongsberg Ingeniorhogskole

In article <1992Nov3.225858.3170@sol.cs.wmich.edu>, 22black@sol.cs.wmich.edu (Martin Black) writes:
|> peterk@cbmger.de.so.commodore.com (Dr Peter Kittel Germany) writes:
|> 
|> >In article <1NOV199210310422@md2.huji.ac.il> robi@md2.huji.ac.il (Dr. Wartenfeld Robi) writes:
|> >>
|> >>  I have a 1084 monitor connected to a Amiga 500. On the rear of the monitor
|> >>there is a composite video inut (CVBS).  I try to connect it a VCR but i got no
|> >>picture. I pressed the button on the front pannel and got nothing.
|> 
|> >There must be something wrong. This should definitely work. A colleague
|> >of mine had this setup at home: A VCR, Amiga and a 1084, so that he could
|> >watch TV via the tuner of the VCR and the monitor, watch videos and of
|> >course his Amiga.
|> 
|> There is yet another button on the back you have to push.  The front one
|> is for if you have seperate hue input.  
|> 
|> Martin
|> 

On my 1084 I use only the front button, which is labeled something like
RGB/COMP. The button on the back is labeled VCR, and sets the monitor
into a special VCR mode. Without this set when playing videos the
colors look bad. 

Another problem by the way is that when my Amiga is on, the SYNC signals
from the Amiga overrides the signals from the CVBS input, giving the
result of 'screen sliding', ie the front switch does not switch between
inputs properly. (This phenomena gives rise to an interesting application
for the Amiga coupled with a 1084 - use it as a Cable-TV decoder.
Yes, its true. If I feed a scrambled Cable-TV signal into the CVBS port
and let the Amiga stay on, the signal override descrambles the signal.
You still have 'screen sliding' though. Anyone able to program the variable
sync on the ECS-chipset -> send me mail ).

Roger
E-Mail roger.aas@kih.no
Newsgroups: comp.sys.amiga.hardware
From: andrews@msdrl.com (Richard Andrews)
Subject: Ethernet cards for Amigas?
Organization: Merck Research Laboratories
Date: Mon, 9 Nov 92 18:02:25 GMT

Are there good ethernet cards available for the Amiga 3000?  I am looking to
link my 3000 with an IBM via ethernet.  I want to share resources like CD-ROM,
disk space, and tape backup.  I suppose that another IBM running NetWare could
do the trick.  What other options do I have?  Run UnixWare on the IBM?  

What cost are we talking for ethernet cards for the Amiga?

-rla
From: TomK@cup.portal.com (Tom R Krotchko)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Amiga 1200
Date: Sun,  8 Nov 92 10:40:43 PST
Organization: The Portal System (TM)
Distribution: world

>How about Commodore calling some more chips by -male- or sex-neutral names,
>or better still, leave out the anthropomorphisms........

I don't think any misogyny was implied by the monikers applied to the visage
of the aforementioned electronic componenets; any more than the common, but
affectionate, familiar of ships as "she".

That said, I am beginning to suspect the best places of higher learning are
no longer found in the New England area, but are probably located in Texas,
particularly those centers dealing with babbage machines and difference
engines.

TomK@cup.portal.com
Tom Krotchko
Xref: sparky comp.sys.amiga.hardware:18972 comp.sys.amiga.graphics:7202
From: kontos@clipper.ingr.com (Thorne Kontos)
Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.graphics
Subject: Re: 3D Scanner available
Summary: IMPORTANT FOLLOWUP
Keywords: I am in no way associated with these people...
Date: 4 Nov 92 22:37:52 GMT
Organization: Intergraph Advanced Processor Division - Palo Alto, CA


I just called the people who make this 3D scanner. Hold onto
your wallets...Price tag $45K - $90K. Serious users only need apply!
From: neil@memex.co.uk (Neil Balloch)
Newsgroups: comp.sys.amiga.hardware
Subject: Floppy Problemo
Date: 9 Nov 92 11:09:33 GMT
Organization: Memex Information Systems Ltd., East Kilbride, Scotland
X-Newsreader: TIN [version 1.1 PL6]

Hi fellow Amigans,

Does anyone know what particular chips/circuitry controls the
writing of info to the floppy on a A500 ?

The machine works fine reading from internal/external drives ok
but errors on trying to write. I see from the Amiga Systems Programmers
Manual from Abacus that the two 8250 chips partly control the floppies
but is it just these or whot ?

Any help or info would be greatly appreciated. :-)

Cheers,
		Neildo.

*-----------------------------------------------------------------*
|neil@memex.co.uk						  |
|Neil S. Balloch, Software Engineer, 				  |
|Memex Information Systems Ltd,					  |
|16 Albion Way, Kelvin Ind. Est.,	Tel +44 3552 33804 (Work) |
|East Kilbride G75 0YN, Scotland, UK.	Tel +44 3553 2820  (Home) |
*-----------------------------------------------------------------*
Newsgroups: comp.sys.amiga.hardware
From: mlelstv@speckled.mpifr-bonn.mpg.de (Michael van Elst)
Subject: Re: Floppy size in 1200?
Organization: Max-Planck-Institut f"ur Radioastronomie
Date: Tue, 10 Nov 1992 04:00:46 GMT

In <1992Nov6.003622.22353@mnemosyne.cs.du.edu> dmacphee@nyx.cs.du.edu (Don mac phee) writes:
> The common arguement given by C= is that 90% of the masses have no use for
>a feature in a low-end machine. I can see several for the 1200:

I think the real argument is: sorry, we have the floppy controller built
into the chipset which limits us to DD floppies. To use HD floppies we
need some overhaul of the chipset (forthcoming, expensive) or a special
drive (still expensive).

> Data interchange: From exchanging nude .gifs to Postscript files.

Agreed.

> Data backup: Having to use 1/2 the number of disks to back up that
>             'optional' drive.

Not an issue with current disk prices. And, you usually do not backup
a complete disk (and time wouldn't be an issue with the special half
speed drives).

> Larger system disks: For those that DON'T HAVE the 'optional' drive,
>             you can pack on something OTHER than the system onto the
>             system disk. (Memacs, arp.library, seomthing other than
>             Topaz 8, an archiver....)

Now, this is no reason at all. People should use harddisks. There's
noone in the clone or Mac world that uses a system from floppies.

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: 890530m@dragon.acadiau.ca (Darren MacKenzie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: NO A3000 Power Light!!!
Keywords: Dead Light
Date: 13 Nov 92 03:24:34 GMT
Organization: Acadia University

adap@edmund.cs.andrews.edu (Edsel Adap) writes:

>In article <guido.721471115@pv0a27.vincent.iastate.edu> guido@iastate.edu (BP Walenz) writes:
>>Here's the sceneraio.  I was working on a small C program, it compiled, so
>>I executed it.  The power light died, the machine DID NOT lock up or crash.
>>(And, no, the program was not supposed to do this.)  So, I reboot.  The light
>>is still off.  So, I kill the power, wait a couple of minutes, power on again,
>>and (guess what) NO light.
>>
>>Everything else appears to be working fine.  Ideas??
>>
>>bri
>>-- 
>>	     Brian P. Walenz      Computer Engineering|Science
>>	     guido@iastate.edu    Ames, IA       (515)296-5326
>>	     "EE's do it with power, CprE's do it with LOGIC."

>The power led died ?!  No relation to your programming.
>It's a possibility......
>Solution? buy a new led and replace the old one.

29 cents at Radio Shack.
-Doc

-- 
=============================================================================== The Commodore Amiga 4000 - 24 bit          16,777,216 colors (4096^2)!!         ------------------------------------------------------------------------------- Buster: "Say goodnight, Babs."                                                 
Babs  : "Goodnight, Babs."                                                      I'm tiny, I'm toony, and I'm a little looney!                                   ------------------------------------------------------------------------------- Darren MacKenzie                                                                ("The Doctor")                                                                  890530m@aucs.acadiau.ca
===============================================================================
From: jmpor@dynam.adsp.sub.org (Jean-Marc Porchet)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Moving 500 to 1200, BAD NEWS
Date: 5 Nov 92 21:24:43 GMT
 <1davn7INNfhf@cs.tut.fi>
Reply-To: cbmehq!cbmswi!dynam!jmpor@cbmvax.commodore.com
Organization: Merging Technologies
X-Newsreader: Arn V1.00 beta rel2

In article <1davn7INNfhf@cs.tut.fi>, Kolkka Markku Olavi writes:

> In article <OD.6badnetOA92-901-302p0_52d49fb1@piraya.bad.se> Roger_Nordin@atb.bbs.bad.se (Roger Nordin) writes:
> >
> >Parity checking is a thing from the pre-historic when DRAMs were unreliable. 
> >Just like MS-DOG (yes, both pre-historic and unreliable :)).

Error correction and parity checking is usefull when you have a lot of memory
since thre more memory you have the more you increase the probability of a
bad read or write in the memory.

> Also, parity checking doesn't _fix_ any memory errors, it only guarantees
> that the machine will _crash_ when a memory error happens. Apparently some
> people prefer this sort of behavior.

with 10 bits you will be able to correct an 1 bit failure and detect a
2 bits failure.


--

PS : forgive my bad English, I'm still trying to learn it
-----------------------------------------------------------------------------
Jean-Marc "JUMP" Porchet                             Phone : (41) 22-754-1733

EMAIL :   ...{uunet,rutgers}!cbmvax!cbmehq!cbmswi!dynam!jmpor
	       or try   mcsun!cbmswi!dynam!jmpor		 
-----------------------------------------------------------------------------
'Simple things should be simple & complex things should be possible' Alan Kay
From: jhf@d0xs1.fnal.gov (John Featherly)
Newsgroups: comp.sys.amiga.hardware
Subject: SCSI tape drive on A530
Keywords: SCSI tape A530
Date: 12 Nov 92 23:37:06 GMT
Reply-To: jhf@d0xs1.fnal.gov (John Featherly)
Organization: D0 Experiment
NNTP-Posting-Host: d0xs1.fnal.gov


Has anyone used a SCSI tape drive (DAT, 8mm, QUIC) with an A530?  If so, what
does your MountList entry look like?  Do you need additional drivers/handlers
from GVP?

I've connected a drive and FastPrep sees it at the right SCSI ID but refuses
to generate a MountList or do anything else with it.

--
--------------------------------------------------------------------------------
   John Featherly                                    jhf@d0xs1.fnal.gov
   D-Zero Experiment at Fermi Lab                        (708) 840-4508
--------------------------------------------------------------------------------
Newsgroups: comp.sys.amiga.hardware
From: mlelstv@speckled.mpifr-bonn.mpg.de (Michael van Elst)
Subject: Re: Secondary CPU cache for the Amiga
Organization: Max-Planck-Institut f"ur Radioastronomie
Date: Tue, 10 Nov 1992 02:11:30 GMT

In <OD.6BadNetOA92-901-231p0_52c45b1f@piraya.bad.se> Mike_Noreen@anet.bbs.bad.se (Mike Noreen) writes:
>Yes, but if you've already got a A3000 (with '030), wouldn't it be rather nice 
>to double performance using - say - 512k SRAM? This wouldnt have to be very 
>expensive; less than one tenth of an average '040 accelerator for the A3000...

If you just count the SRAM chips... but just the SRAMs don't make a cache
and just a cache doesn't make a marketed product.

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."
Newsgroups: comp.sys.amiga.hardware