HDTenEightyP/NetNews huggingface dataset:
From: mks@cbmvax.commodore.com (Michael Sinz)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Cache on 68030
Date: 15 Apr 92 13:02:29 GMT
Reply-To: mks@cbmvax.commodore.com (Michael Sinz)
Organization: Commodore, West Chester, PA

mch@regent.e-technik.tu-muenchen.dbp.de (Michael Hermann) writes:
>mks@cbmvax.commodore.com (Michael Sinz) writes:
>>.....
>>The 80486, on the other hand, does have a cache and does have BURST memory
>>cycle support.  It still have a unified cache so it does not have he ability
>>to do instruction and data fetches at the same time.  (The data path is
>>larger so internal to the chip the cache is *very* fast, but it is not
>>harvard architecture.  But then, they needed to remain compatible with all
>>the x86 code out there, much of which can not deal with independant
>>instruction and data memory spaces/caches...)
>>.....
>
>What is the commonly used type of code that makes separated inst/data-
>caches on the 80486 impossible due to backward compatibility?

That is easy:  MS-DOS and MS-DOS applications.  Many things in the MS-DOS
world use self-modifying code and that breaks with separate instruction
and data caches.

>Why is the 68040, which is backward compatible to the 68000 immune
>against this type of code?

It is not.  The however, since the 68020, we have had a real instruction cache
on the chip.  This ment that software that was doing the silly self-modifying
code was breaking starting with the 68020.  (And that is why a number of games
on the Amiga broke back when we first released the 2620 card.)

>Both the 8086 and the 68000 had outputs to indicate the type of access
>externally (8086 lacked supervisor mode, which does not play a role here).
>Even if a design had made (clever?) use of the separation of code and data
>(and stack), how do you mark a particular adress as INST. only if you don't
>use a MMU or an extra bit in main memory?
>How many designs for 8086/68000 actually use external INST/DATA separation?

Rather few.  More so in the 68000 family.  (I know of two controller systems
that do)  The 68000 family has nice supervisor support for being able to
write to the instruction side of things.  This was needed for doing such things
as true address space separation.  However, externally, there is very little
gain to separate instruction/data address spaces.  Mainly because it all
has to flow into the same "hole" to get into the CPU.  Once in the CPU,
the separation (like in the 68030 and 68040) is a major performance benefit.
If the 680x0 family ever gets external separation of instruction and data
bus then performance can again get better.  (But it will cost a ton of pins)

/----------------------------------------------------------------------\
|      /// Michael Sinz  -  Senior Amiga Software Engineer             |
|     ///                   Operating System Development Group         |
|    ///   BIX:  msinz      UUNET:  rutgers!cbmvax!mks                 |
|\\\///                                                                |
| \XX/     "I think not." said Ren'e Descartes, then he vanished.      |
\----------------------------------------------------------------------/
From: sworkman@oregon.uoregon.edu (Michael Sean Workman)
Newsgroups: comp.sys.amiga.hardware
Subject: CBM's multi-serial card
Keywords: BBS, telecomm, serial, multi
Date: 14 Apr 92 22:34:00 GMT
Organization: University of Oregon
News-Software: VAX/VMS VNEWS 1.41

I'm wondering if anyone's found any problems using Commodore's multi-serial
card with Eric Drewery's StarNet BBS software?  I'm currently running a one
line BBS and am expanding to two lines very soon and have heard that ASDG's
multiserial card isn't as good as CBM's.  It's only got 2 ports and it is
supposed to be slower and bog down the machine at higher baud rates.  Also,
anyone using CMS's, does it really bog down at high speeds?  I'll be
running one line with a 16.8kbps Dual Standard and the other with a Supra
2400 Plus (v.42bis)  I have an Amiga 2000 (5megs) running under OS 2.04. 
If you have a similar setup and/or know anything about it, please let me
know what you think about the serial card.  Thanks.

  //AmigaX (503)342-2144
\X/Sworkman@oregon.uoregon.edu
Just say NO! to single-tasking!
From: mcraig@ee.fit.edu (Mark Craig)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A1300 Genlock on A500
Date: 10 Apr 92 12:53:12 GMT
Organization: Florida Tech, CP/EE Dept.

In <1992Apr1.212027.1@ualr.edu> lrfrederick@ualr.edu writes:

>This is my second post of this message.  Please reply if you know the answer.

>Will an A1300 Genlock work with an A500 if the -12 volts on pin 21 of the video
>port is changed to -5 volts?  This pin is the only one that is different from
>the A1000/2000 port according to the Amiga Hardware Reference Manual.
>Any comments or suggestions would be appreciated.  Thankyou.


It's doubtful it would work as the A-1300 apparently requires more amps than
the 500 can put out.  Check the milliamp ratings on the 500 ports and the
requirements on the A-1300.
 

I'm the other person with the same problem and my solution was to just buy
(or trade) for a cheap A-1000 system.
 

Thanks to everyone who responded...
 
 

Mark

--
Mark Craig
mcraig@ee.fit.edu
Xref: sparky comp.sys.amiga.hardware:8490 comp.sys.amiga.advocacy:12006
From: danb@gaff.physci.psu.edu (Dan Babcock)
Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.advocacy
Subject: Re: Will the Blitter become redundant?
Date: 7 Apr 92 15:01:24 GMT
Article-I.D.: cs.22aHp16k6
Organization: Penn State University, Physical Sciences

In article <1992Apr7.140540.11864@uwm.edu> gblock@csd4.csd.uwm.edu (Gregory R Block) writes:
>entity@cccan.uucp (Cybernetworx) writes:
>
>Not even the 040 can outperform the blitter in all cases.  Not even in
>most cases.

...when accessing chip RAM in 560ns cycles. Not exactly fair!

Dan
From: bob@jacobs.CS.ORST.EDU (robert s. richardson)
Newsgroups: comp.sys.amiga.hardware
Subject: CDTV Keyboard Pinouts Needed
Date: 16 Apr 92 04:10:36 GMT
Organization: CS Dept. Oregon State University, Corvallis, Oregon.

Hello.  I have a few CDTV keyboards on order (those nifty all-black
ones) and will be attempting to mate them with A500 motherboards.
I have already successfully mated a2000/a3000 keyboards with the
a500, and will use an ohmmeter to check for corresponding pins on
the CDTV keyboards, but if anyone has these pinouts handy, I would
appreciate them.  Are there any unexpected things I should watch
out for?

Also, I will be receiving the all-black external floppy units.  I wish
to mate these to the A500 motherboard as DF0:.  Any suggestions?

AND: As a result of this project, we will have several surplus and
unneeded infra-red mice.  Since the A500 MB cannot receive the
impulses from these, they will be useless to us.  Is there a worthy
charity/application to which we might donate these, or would anyone
like to buy them from us (all offers considered.)

We order the keyboard/drive/mouse as a bundle, but only really need
the keyboard.  (We can get drives we know work for less elsewhere, but
will just have to adapt...)

Thanks for your input,
Bob Richardson


| Bob Richardson     (or, for you UNIX buffs: bob@jacobs.cs.orst.edu) |
| 218 NW 21st #2           Corvallis, OR  97330          503-758-5018 |
| __            						      |
| \/   WI- GR+ F++ ST* GL- SC++ MU& WH WE& SF+ YA++ SN- NU-- SW- SR+  |
Newsgroups: comp.sys.amiga.hardware
From: diamond@hubcap.clemson.edu (David Lee)
Subject: Re: Supra Drive
Keywords: adaptec
Organization: Clemson University
Date: Fri, 17 Apr 1992 15:16:39 GMT

lad@remus.rutgers.edu (Kamlesh) writes:


>Helloo,

>	I have the Supra drive w/2meg, and Adaptec controller and a 20
>meg, NEC hard drive.  I boot the computer, A500, with the Supra boot
>disk providedd.  However, when it starts, it gives the message
>"No SCSI device present".  Then I tried formatting the drive?  
>But the software lets your choose between many controllers and drives?

>Also, the program grays out all thee SCSI devices numbers and LUN
>numbers.

>	Thanks
>								Kamlesh Lad
>							 lad@remus.rutgers.edu
>								
 First of all, is the NEC Drive a SCSI drive? If so, then check it for
 a set of jumpers for setting the LUN id. It should be set for zero if
 that is the only drive. This could be the cause of the two problems above.
 If you cannot find your specific drive then you should probably choose "other" for both the controller and the drive and then take the NEC drive spec
sheet and fill in the appropriate parameters. Of course, doing this 
doesn't allow you to map out errors.

If the drive ain't SCSI and you have a SCSI interface...it won't work.


-David Lee
 diamond@hubcap.clemson.edu

-- 
   David C Lee
   Clemson University     //   
   Clemson,SC           \X/ Amiga
   diamond@hubcap.clemson.edu
From: rnelson@yoda.eecs.wsu.edu (Roger Nelson - Grad Student)
Newsgroups: comp.sys.amiga.hardware
Subject: 1084-S popping problem fix
Date: 13 Apr 92 18:24:51 GMT
Organization: Washington State University


It looks like one of the fellows in our user group has the 1084-S popping
problem. Could someone send me the description of the problem and the fix
that was posted here a few months back.

Thanks,  Roger
From: cholt@catpan.UUCP (Charles Holt)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: CIA questions
Date: 13 Apr 92 18:28:59 MDT
Organization: CATPAN BBS, Boulder CO (via C-Net Amiga)

   In response to your question about bad CIA chips.  First of all, they blow up constantly.  Almost ANY plugging in of things besided the keyboard/mouse/joystick while anything is turned on will generally result in a blown CIA.

SYMPTOMS:  Any one of a plethora of things.  If the parallel or serial port has died, that's a good indication that it has met its demise.

TESTING:  The only sure way I know of is to open the machine... there are two CIA chips.  Swap them.  If the problems change, then chances are the CIA has blown.

--- Via UCI v0.13 Beta (C-Net Amiga)

******************************************************************************
* \\ AMIGA   kessner.denver.co.us!burner!catpan!cholt  aka Grimalkin         *
*  \\ //      CATPAN BBS (303)494-4825  Home of the Useless Facts!           *
*   \X/       "Growing old is mandatory, growing UP is optional."            *
******************************************************************************
Newsgroups: comp.sys.amiga.hardware
From: mrz50957@uxa.cso.uiuc.edu (SEQUENT V2.0)
Subject: Trackball probs
Summary: probs
Keywords: tack
Organization: University of Illinois at Urbana
Date: Fri, 10 Apr 1992 05:53:12 GMT


Newsgroups: comp.sys.amiga.hardware
Subject: Trackball prob

I recently had a strange problem occur on my A2000HD system running 2.04 with
3 megs ram (1 chip, 2 fast).  Problem occurs when the trackball is hooked up,
and I try to boot; the system hangs.  This is on a cold boot.  From this
hang, I can do a warm boot, and everything boots as normal, exceptw when I
try to move to trackball, then i locks up.  Another interesting note is when
I do a cold boot, and the system just hangs there, I can press any of the
bottons on my MicroSpeed trackball, and toggle the power LED to blink as if I
were having a guru.  

This all led me to reinstall all system software...I did this all my
intuition's keyboard mouse equivilents.  This works, so when I had it all up,
I dug out the ol' mouse, and that worked, andI once again had everything
working.  I was a happy person.  Then I decided to plug the trackball back in
and the same ol' thing happened.  

It would appear that this problem occurs _only_ when I have the trackball
plugged in.  Perhaps it is a short in the trackball itself (how'd I do
that?).  In either case, my trackball would seem dead.  Any help?  Please
email me directly so I can make sure that I will get the information that I
need, and thank you in advance!


-----------------------------------------------------------------------------
| Matthew R. Zeier                 __  | "Be content, then, in everything;  |
| University of Illinois,         / /  |  and if you wish to seem so        |
|   Urbana-Champaign         __  / /   |  likewise to anyone, appear so to  |
| mrz50957@uxa.cso.uiuc.edu  \ \/ /    |  yourself and it will suffice you."|
| "Live long and prosper!"    \__/     |                 -Epictetus         |
-----------------------------------------------------------------------------
-- 
-----------------------------------------------------------------------------
| Matthew R. Zeier                 __  | "Be content, then, in everything;  |
| University of Illinois,         / /  |  and if you wish to seem so        |
|   Urbana-Champaign         __  / /   |  likewise to anyone, appear so to  |
From: kalisiak@acsu.buffalo.edu (Christophe M. Kalisiak)
Newsgroups: comp.sys.amiga.hardware
Subject: Anyone have any experiences with SMD to SCSI converters on an Amiga?
Date: 7 Apr 92 17:55:46 GMT
Organization: UB

A friend of mine (without net access, but you can email to me) has an
A500 and we are trying to get a Hitachi SMD drive to interface to an
Adaptec 5580 (I think) SMD to SCSI adapter, which in turn is trying
to be connected to a SCSI controller in an external case (if you want
to know which SCSI controller, I can ask him). 

Does anyone have any experiences with connecting said hardware? We have
tried unsuccessfully to access the drive from the disk formatting software
he has, but the software did not automagically see the drive hanging off
the SCSI bus. We know the controller works because he as able to hang a
Seagate SCSI drive off it before. 

Any help would be appreciated.

Thanks,
Chris Kalisiak
kalisiak@acsu.buffalo.edu

BTW, I am not an Amiga user, so I don't read the comp.sys.amiga.* 
boards. Please reply via email.
From: ee23042f@vttcf.cc.vt.edu (Zaphod Beeblebrox)
Newsgroups: comp.sys.amiga.hardware
Subject: Toaster on a 3000????
Date: 10 Apr 92 03:41:39 GMT


  Does anyone have a Video Toaster working on a 3000?  I've heard that
  the board needs to be hacked off to make it fit, is this true?

  Also, I've heard that there is a Toaster-type card that will definately
  work in a 3000, does anyone know what it is called, if there is one?


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ;-) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Brian Wentz     
Virginia Tech                          wentz@csugrad.cs.vt.edu          
703-232-2300                 
Newsgroups: comp.sys.amiga.hardware
From: clare@nynexst.com (Clare Chu Ayala)
Subject: Re: Supra XP 500 vs GVP Series II
Keywords: hard drive, ram
Organization: Nynex Science and Technology
Date: Fri, 17 Apr 92 16:13:23 GMT

In article <cline.703465154@ee.ualberta.ca> cline@ee.ualberta.ca (Robert Cline) writes:
>bmccnnll@unix1.tcd.ie (Barry McConnell) writes:
>
>
>>The GVP can handle non-DMA 32-bit memory correctly, unlike many other DMA
>>controllers (including older A590/A2091's). It uses a buffer in 16-bit fast
>>RAM which is much larger than the one the FileSystem supplies. With an '030,
>>you won't notice much of a slowdown at all.
>Firstly, you're right- any DMA-based controller could use DMAfix, I didn't
>mention that, but DMAfix, nor whatever the GVP uses couldn't be considered
>handling the problem 'correctly'. The extra buffering required does slow
>down the system, and that's what I was talking about, but you're right, it's
>not a drastic slowdown, nor GVP's fault. I do wish the MMR could allow the DMA.
>
>>Barry.
>Rob


  What is DMA, and is it good or bad for a hard-drive controller?
  The GVP ads say it is good, because it makes drive access faster.
  The Supra ad says "A2000 performance with no DMA problems".
  The Grandslam is also non-DMA.  Thanks to several people, I'm
  now considering the Grandslam also.  Fast drive access is not
  that important to me, as lack of problems.  Of the three, which
  system has the least problems and is easiest for a non-hardware
  hacker to set up?  I get the feeling it is the Grandslam, but
  if anyone has had any problems with it, please e-mail me.

  Thanks, Clare

-- 
-----------------------------------------------------------------------------
Clare Chu, Ph.D.             Data & Information Services
NYNEX Science & Technology   clare@nynexst.com
White Plains, NY 10462       AMIGA RULES!!!
From: labman@cs.rit.edu (Lab Manager)
Newsgroups: comp.sys.amiga.hardware
Subject: Action II or Bubble Jet
Date: 11 Apr 92 16:23:00 GMT
Article-I.D.: cs.3099
Organization: Rochester Institute of Technology, Rochester, NY

Hi,

I'm thinking about getting a low-end laser or bubble-jet printer.

Does anyone have experience or an opinion on the

1. Epson Action laser II

2. Cannon Bubble Jet ex


What drivers would I use for each?
what quality will I get?

any help would be appreciated

thanks in advance,

Ken W.
From: skaaht@tbag.UUCP (Glenn Pettry)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 1950, AGAIN... (Help, please?)
Date: 15 Apr 92 12:24:44 EST
Organization: Tampa Bay Amiga Group

     That flashtube sound is your high voltage sircuit kicking in; sounds like
a problem which is causing the xray protect circuit to cut in. May be a bad
tube.
From: cpw8034@zeus.tamu.edu (CHI PIN WEN)
Newsgroups: comp.sys.amiga.hardware
Subject: IBM Expansion... CHEAPER!
Date: 13 Apr 92 06:02:00 GMT
Organization: Texas A&M University, Academic Computing Services
News-Software: VAX/VMS VNEWS 1.41

it and say it's an expansion device... hell, that's what IBM'ers and Mac'ers
are doing with the A2000 Toaster Computer anyway!  (except that they don't
exactly put it ON their computer...)

Just a thought...Alan

Buy one of those really thin slim IBM's with cards built in and put it on top
of your A2000
From: Zaphod@qube.OCUnix.On.Ca (Zaphod)
Newsgroups: comp.sys.amiga.hardware
Subject: Xetec adaptor
Distribution: world
Date: 11 Apr 92 08:15:04 PST
Organization: The QuBE BBS

I recently bought a hard drive for my system, and I'm trying to make it
autoboot. However, I ran into a problem when I opened up the adaptor and
saw that someone had soldered two pins together. When I touched one of the
pins, it fell off, too.. so obviously someone has tinkered (badly). But I
am still trying to make the thing work: my ROM select jumpers now look like
this:

     (gone)    o     o
                     |
                     |
        o      o     o

I tried putting a jumper on the middle two to configure for 1.3 (which I
assume my system is, since the WB requester "hand" says 1.3), and couldn't
even boot off a floppy. However, when I took off the middle jumper, I could
boot from a floppy but couldn't make the drive (which works fine) autoboot.
 
Any comments or explanations would certainly be welcome..
(hardware:A500 w/ Xetec "FastTrak" SCSI Host adaptor, external Seagate
enclosure)

-- Via DLG Pro v0.991

* Zaphod @ the QuBE, where the pretzels are..

"Take my PC, please"
Newsgroups: comp.sys.amiga.hardware
From: cython@ais.org (Tim Devlin)
Subject: Re: A3000/Toaster
Organization: UMCC
Date: Sat, 11 Apr 92 01:03:19 GMT

In article <9204101650.AA26908@teetot.acusd.edu> gs@TEETOT.ACUSD.EDU (Greg Simon) writes:
>
>  Does anyone have a Video Toaster working on a 3000?  I've heard that
>>  the board needs to be hacked off to make it fit, is this true?

  The current Toaster will not fit in the A3000 case, unless you "hack" the
case to let it hang over the side.  Also, last I knew the Toaster only
worked with the old Denise chip, and wont run with the ECS denise chip in
the A3000, thus you would also have to replace the ECS denise with the old
Denise.  

The Toaster I would assume, will fit in an A3000T, but once agian the denise
problem is still there, unless Newtek has solved this problem.  They have
said that an A3000 version of the toaster will one day be avaible, but they
are in no rush to make one, so I would not be suprised to see the year 1993
come and go before an A3000 toaster is produced.
Organization: City University of New York/ University Computer Center
Date: Wednesday, 15 Apr 1992 23:38:07 EDT
From: <AD6QC@CUNYVM.BITNET>
Newsgroups: comp.sys.amiga.hardware
Subject: Rev 6.0 2000

     I was wondering I have a 2000 with rev 6.0 board and I was wondering
what chips of the new chip set I have. I know I have a 1 meg agnus but I
would like to know if I have a ECS Denise. What would I have to do to upgrade
to 2.0. Is it just getting the roms and the disks. Thanks.



                                                     Alex Jeannopoulos
From: sspst8@unix.cis.pitt.edu (Sanjay S Patel)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Quantum Drives - Are they reliable?
Date: 11 Apr 92 04:40:37 GMT
Organization: University of Pittsburgh

No I have not tried the newer drives. I'm glad they improved the speed.
However the 52 is not say slow but not as fast as everyone's impression.

You will Never get 1 meg per second in real usage. If you are quoting
some benchmark I'd like to see it.
Newsgroups: comp.sys.amiga.hardware
From: blgardne@javelin.sim.es.com (Dances With Bikers)
Subject: Re: NEW DAK External CD-ROM. (Re: DAK $229 CD-ROM details)
Reply-To: blgardne@javelin.sim.es.com
Organization: Evans & Sutherland Computer Corporation
Date: Wed, 8 Apr 1992 14:20:51 GMT

several folks write:

[what's a DAK?]

DAK is a mail-order surplus closeout shop. They specialize in electronic
gadgets, and a catalog filled with amazingly bad prose, hyping the
products they sell. Their ad copy is good mostly for laughs, but they do
have some good deals from time to time.

>|> Is this $229 CD-ROM drive also from DAK, or somewhere else?  Sorry if
>|> this was already mentioned, our newsfeed has been flakey.

>The CDR-80 isn't listed in any of the DAK catalogs I've seen, but its
>order number is 5986. (Thanks to Robert Kimball who originally posted
>this info back in December.)

>Here are DAK's phone numbers.

>Orders 800-325-0800
>Tech Info 800-888-9818
>Other Inquiries 800-888-7808
>TDD 800-888-6703
>FAX 818-888-2837

And if you're outside the US, try 818-888-2695
-- 
Blaine Gardner @ Evans & Sutherland        580 Arapeen Drive, SLC, Utah 84108
blgardne@javelin.sim.es.com  uunet!javelin.sim.es.com!blgardne  BIX: blaine_g
DoD #46               My other motorcycle is a Quadracer.              FJ1200
From: Ernie_Gorrie@mindlink.bc.ca (Ernie Gorrie)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: How can I get in touch with Capilano Computing?
Date: 17 Apr 92 18:30:36 GMT
Article-I.D.: mindlink.11484
Organization: MIND LINK! - British Columbia, Canada


        Capilano Computing Systems is at #501 - 1168 Hamilton Street,
Vancouver, B.C. Canada  (sorry, but I don't know the postal code).  The
telephone number is (604) 669-6343.
--
Ernie_Gorrie@mindlink.UUCP (Port Coquitlam, British Columbia, Canada)
CompuServe Information Service (CIS) 72647,2150
Xref: sparky comp.sys.amiga.hardware:8769 comp.sys.ibm.pc.hardware:13691
From: jad@expert.cc.purdue.edu (John Dormer)
Newsgroups: comp.sys.amiga.hardware,comp.sys.ibm.pc.hardware
Subject: Looking for RS422 cards
Summary: tell me what you know about rs422 boards for IBM and Amiga
Keywords: rs422, serial
Date: 13 Apr 92 19:50:22 GMT
Article-I.D.: mentor.45190
Followup-To: comp.sys.amiga.hardware
Organization: outstanding.
Originator: jad@expert.cc.purdue.edu


  I am trying to find out just how many rs422 or rs422-capable boards exsist
for the Amiga and the IBM. I know there must be quite a few for the IBM, but
I have only heard of one for the Amiga and the company which makes it has 
gone under. Please reply by email or forward requests for the collected info
to me.

:	John Dormer
:	Purdue Daemons
:	jad@expert.cc.purdue.edu