[comp.sys.amiga] Atari ST Emulator ?

bbs00203@uafcseg.uucp (Mario Amigo) (07/28/90)

Hello:  

	Not long ago there were words about ST emulator for Amiga from Germany.
There are PD versions which work, I hear.  Any more info on that, anyone?

davidm@uunet.UU.NET (David S. Masterson) (07/30/90)

In article <4985@uafhp.uark.edu> bbs00203@uafcseg.uucp (Mario Amigo) writes:

   Not long ago there were words about ST emulator for Amiga from Germany.
   There are PD versions which work, I hear.  Any more info on that, anyone?

Speaking of the ST, anyone heard anything on the "Stacy".  Is it just a
portable ST (that's what it looked like in the ad) or something new?
--
===================================================================
David Masterson					Consilium, Inc.
uunet!cimshop!davidm				Mt. View, CA  94043
===================================================================
"If someone thinks they know what I said, then I didn't say it!"

buffa@sardaigne.inria.fr (Michel Buffa) (07/30/90)

In article <4985@uafhp.uark.edu>, bbs00203@uafcseg.uucp (Mario Amigo) writes:
> 
> 
> Hello:  
> 
> 	Not long ago there were words about ST emulator for Amiga from Germany.
> There are PD versions which work, I hear.  Any more info on that, anyone?

Well, I got some disks with a bunch of small programs compiled on them, like
IFF-Converter, and so on... I guess they had been made by pirates, but they
are very useful. On one of them There was a preview of the chameleon
ST-EMULATOR and on the other one another ST EMULATOR, the MEDUSA one I think.
The first one worked well in the three resolutions, but it was impossible to
write on the atari disks (it was a preview). Most of the softs I tried were
very simple and they worked !!!!! 

The second one was more finished, and I think it was a cracked version of the
medusa emulator. With this one, everything I tried worked well, even complex
programs like platine st, quantum 2.0,... and it was very fast. I could run it
only in high black and white resolution.

I can't say more as the disks didn't contain any documentation (like most of
these compilations made by pirates).

I read that the medusa emulator works well only with a special hardware card.
Here is a repost of a transcription of the test of the medusa emulator in a
German magazine:

------------------------------------------------------------------------------
This is a quickly done translation of the first review of Medusa, the
Atari ST emulator for the Amiga 2000. Please excuse the probably rough
English. I don't believe that I'm required to produce Marketese ;-)

I have left the prices in Deutschmarks since this news group is quite
international. Most people are probably aware of their exchange rates
with the Dollar, so here is the exchange rate for Deutschmarks to
Dollar: 1 $ is roughly 1.67 DM.



		New perspectives from an Atari in the Amiga

Atari ST Computers are technically inferior to the Amiga in Video and Audio.
Despite this, they have won a quantitative and qualitative advantage in
areas like text processing. After inserting Combitec's emulation card
Amiga users can employ the powerful software of the seemingly weaker
computer.


Following Readysoft's emulator A-MAX another emulator makes new worlds
acessible to the Amiga. Instead of trying to imitate the Apple
Macintosh, Combitec's Medusa tries to emulate the Atari ST as closely
as possible.

Somebody imagining the emulator as a complete Atari ST on a plug-in
card will be surprised. On the small Medusa card for the 100 pin
Amiga-slot he will nmainly find two logic components (PALs) that
enable the Atari ST software to use Amiga hardware. WIth this the
purchase of Atari hardware is superfluous und possibly ensuing
copyright problems are avoided.

Medusa requires an Amiga with at least 1 Megabyte RAM and a diskette
drive. Combitec recommends a 2 MByte RAM expansion to be able to work
with programs that require more memory. The emulator uses the entire
Amiga memory without problems. Also used are all interfaces, the
diskette drives (read and write-compatible with original Atari 720 KB
drives) and certain hard disks. Printers and plotters can be used,
too. The owner of a well equipped Amiga owns also a well equipped
Atari.

After inserting the card Medusa can be started immediately. The
software can be loaded directly from diskette or hard disk and is not
copy protected. The Amiga part of the software consists primarily of
the Medusa program - the emulator proper - and the installation
software that is needed especially for using a hard disk.

The Atari operating system TOS (Tramiel Operating System) - not
included in the package - can be stored on hard disk and be loaded
from there. Owners of a Combitec filecard or a Combitec AutoBoot card
can create a bootable parttion of their hard disk for the Atari ST.

A short and clear installation program facilitates TOS installations
on Amiga diskettes or hard disks, theassignment of Amiga diskette
drives to the Atari, the creation of an Atari partition on hard disk
and the adjustment of video refresh.

The problem of getting the operatin system of the emulated computer is
prevailing among emulators. For the Macintosh emulator A-MAX the
original Macintosh ROMs are required, but cannot be delivered with it
for copyright reasons.

For Medusa this problems can be solved relatively easily: For one the
dealers are seling Ataris TOS as a diskete version for 15 DM, and a
program called "GetTOS" is delivered with Medusa that, started on an
original Atari ST, reads the TOS out and writes it to diskette. This
diskette can be used for the emulator directly or as a medium for the
hard disk installation. Sources for the diskette TOS are referred to
by Combitec on request. Combitec points out that the legal questions
have to be checked out before copying the TOS. In doubt Atari has to
be asked for permission !

For the test the TOS version 1.0 was available on diskette.

According to Combitec the capability is planned to put the ROM-TOS
into sockets on the Medusa card. Since TOS can be loaded from hard
disk in a few seconds, this plan was shelved for now. In daily use
this solution provides greater flexibility since users can choose
between different TOS versions that can all be stored on hard disk.

After installation a typical Atari desktop screen appears on the Amiga
monitor. Since HiRes mode is pre-selected it is an interlace screen.
The characteristical flicker is somewhat abated as the refresh
frequency of the monitor (1084 et al.) can be increased from 25 Hz to
31 Hz or even 35 Hz for better devices. This facility does not require
a special Agnus chip. In LoRes or MedRes logically the double
of the HiRes frequency can be used, up to 70 Hz. This represents an
absolutely stable image.

One has to experiment to find the ideal value: an accessory included
with Medusa (a program that can be reached at any time on the Atari
ST) allows the variation of the setting from the emulator. If the
screen is showing a wild image instead of the normal screen the
monitor cannot keep up. Very useful in this procedure is the feature
that allows to switch back to the standard Amiga setting (this is
always working) at any time.

"Signum! 2", the extremely successful scientific text processing
package, is an important program to find out about compatibility and
flawless function of the emulator. Texts could be processed and
printed without perceptible difference in speed. With the progres of
the test this impression got firmer. Programs like Calamus, Arabesque,
Tempus and Tempus Word, STAD, GFA-BASIC, Adimens, Psion Chess and
Turbo C ran without problems like on the original ST. Even the
software accelerator Turbo-ST ran and helped Medusa to a fantastic
text output speed.

As the shareware performance program Qindex ran, too, it was possible
to test the speed of Medusa: 95 to 98 percent of the original speed
were attained. Under Turbo-ST Medusa peeked to 1160 percent of an
original ST without Turbo_ST.

But the limits of the emulator became visible, too: third emulations
like Aladin, the Macintosh emulator for the ST computer, did not run.
Many games did not run likewise. This is pointed out in the manual,
because if a program assumes certain hardware prerequisites that are
not present in the Amiga - like the original ST diskette drives with
index hole controlled hardware - and uses this hardware circumventing
the operating system, this environment cannot always be emulated.

Combitec expect direct user participation on enhancing Medusa because
of a one year, no-cost update service. The manufacturer says they are
dependent on cooperation with manufacturers of hardware and software
to support more hard disks or software protected by dongles, like that
in the midi market, to make Medusa workable.

As said, Medusa works without problems with memory expansions,
diskette drives and hard disks. Flicker fixer cards do not disturb the
emulator likewise. But it is not possible to use the emulation if
68020 or 68030 cards are installed. This is not because of Medusa, but
because of TOS: The present TOS versions run with the 68000 processor
only.

Combitec is waiting for new TOS versions, like that for the long
announced Atari TT. There are already deliberations to run the Atari
as a screen on the Amiga. To speed up the emulator, a card called
"Piccolo" is announced that with provide a 14 MHz 68000 and 256 KByte
to 1 MByte memory. The memory is designed with SRAM so that switch-off
resistent storage of Kickstart or TOS in fast RAM is possible.

(J. Sprave/rg)

The Combitec development "Medusa" is sold by MacroSystem,
Gahlenfeldstrasse 6, 5804 Herdecke, Germany. Phone +49/23 30/80 11 32.
The price is DM 498.

------------------------------------------------------------------------
The German version of this article was published in Amiga Welt 6/90,
pp 50/51. This translation does not reflect the opinions of the
translator, who is only a reader of that magazine and in no way
related to either the publisher or Combitec or MacroSystem.

I did this translation because many people have been talking about
Atari emulation on comp.sys.amiga. I do not want to purchase this
system myself and please don't flame me if you don't like the contents
of this article of the rough cut translation.

--
| lchristoph@Sun.COM     (Internet)              | 		Disclaimer: |
| ...!unido!sunmuc!lupe  (German EUNet, "bang")  | 	  My employer has a |
| lupe@sunmuc.UUCP       (German EUNet, domain)  |    non-exclusive license |
| ...!suninfo!lchristoph (Sun Germany customers) | 	     to my opinion. |




------------------------------------------
Michel Buffa:       Projet Robotvis, INRIA, France

    Internet:       buffa@sardaigne.inria.fr
Surface Mail:       Michel BUFFA, INRIA - Sophia Antipolis, 
                    2004, route des Lucioles, 06565 Valbonne Cedex -- FRANCE
 Voice phone:       (33) 93.65.78.39, Fax: (33) 93 65 77 65
------------------------------------------

terry@helios.ucsc.edu (Terry Ricketts) (07/30/90)

>In article <4985@uafhp.uark.edu> bbs00203@uafcseg.uucp (Mario Amigo) writes:
>
>   Not long ago there were words about ST emulator for Amiga from Germany.
>   There are PD versions which work, I hear.  Any more info on that, anyone?

     The emulator you are refering to is called Medusa. It is supposed to be a
hardware-software combination. For the last month there has been a software
package by that name making the rounds of the bbs's. It appears to be PD but
since there was no documentation I can't say for sure. The software seems to
run. At least a TOS screen comes up on Ami. But since I have no ST disks to
check it with I have not gone any further. If anyone knows for sure that it is
PD & if others have an interest in it I could send it on to Xanth.



| Terry Ricketts			|  Internet: terry@helios.ucsc.edu
| Senior Electronics Engineer		|  	     loel@helios.ucsc.edu
| Lick Observatory Electronics Lab	|  Phone:    408-459-2110
| University of Calif, Santa Cruz 	|

seanc@pro-party.cts.com (Sean Cunningham) (07/31/90)

In-Reply-To: message from cimshop!davidm@uunet.UU.NET

I just got a copy of it...
 
It works fine, except I have no software to test on it.  Then the inevitable
question came to mind, "what would I run on it?"
 
Sean
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buffa@sardaigne.inria.fr (Michel Buffa) (07/31/90)

In article <5533@darkstar.ucsc.edu>, terry@helios.ucsc.edu (Terry
Ricketts) writes:
> >In article <4985@uafhp.uark.edu> bbs00203@uafcseg.uucp (Mario Amigo) writes:
> >
> >   Not long ago there were words about ST emulator for Amiga from Germany.
> >   There are PD versions which work, I hear.  Any more info on that, anyone?
> 
>      The emulator you are refering to is called Medusa. It is supposed
to be a
> hardware-software combination. For the last month there has been a software
> package by that name making the rounds of the bbs's. It appears to be PD but
> since there was no documentation I can't say for sure. The software seems to
> run. At least a TOS screen comes up on Ami. But since I have no ST disks to
> check it with I have not gone any further. If anyone knows for sure
that it is
> PD & if others have an interest in it I could send it on to Xanth.


What is the emulator you are speaking about ? How do you run it ? Medusa is
definately not public domain, it's sold in Germany.


Well, I tried two different emulators. I tried to run softwares, and they
WORKED ! The emulators I tested WERE NOT PUBLIC DOMAIN ! They were compiled 
with other softs on a disk with 50 different utilities. The name of the disk 
was CD147 I think. The CD's serie are disks compiled by pirates with a lot of
compacted utilities. Don't blame me. I'm not a pirate. Somebody just gave me
this disk and said: hey, do you want to try the st emulators ? May I had that
these compiled disks are very useful too (They contain pirated software, and
that's not good, but they also contain the best of the public domain
utilities, compiled in a very efficient way)

So, the first one I tried was the CHAMELEON emulator. It was a beta version,
so it was impossible to write anything on the atari disks. It reads directly
atari disks and run in three different resolutions (i had to press F1, F2 or
F3 at launching time to choose the res.). I tried degas elite and it
ran. It crashed several times too, and didn't work with 1 meg chip Ram (But
ran with Quickship) I never heard about this emulator before...

The second one was a cracked version (only software) of the medusa emulator
V2.1a I don't know if it is an alpha or beta version, but it works very well.
It reads directly atari disks, and runs only in the black and white hi-res 
mode. I ran without problems Signum 2.0, platine st, script, and some other 
softs. The only problem is that with only One Meg, A lot of programs pop the 
requester "Not enough memory to run this application". This emulator seemed 
very bug-free and there was no speed difference with a real atari st.


------------------------------------------
Michel Buffa:       Projet Robotvis, INRIA, France

    Internet:       buffa@sardaigne.inria.fr
Surface Mail:       Michel BUFFA, INRIA - Sophia Antipolis, 
                    2004, route des Lucioles, 06565 Valbonne Cedex -- FRANCE
 Voice phone:       (33) 93.65.78.39, Fax: (33) 93 65 77 65
------------------------------------------

lupe@alanya.Central.Sun.COM (Lupe Christoph - Sun Germany Consulting - Munich) (07/31/90)

bbs00203@uafcseg.uucp (Mario Amigo) writes:

>	Not long ago there were words about ST emulator for Amiga from Germany.
>There are PD versions which work, I hear.  Any more info on that, anyone?
Medusa, the Atari ST emulator for the Amiga 2000 is out and receives
favourable reviews.

I have not heard of PD versions. Medusa includes a tiny board with a few PALs
to make the hardware look more alike. Ever heard of PD hardware ? ;-)

--
| lchristoph@Sun.COM     (Internet)              | 		Disclaimer: |
| ...!unido!sunmuc!lupe  (German EUNet, "bang")  | 	  My employer has a |
| lupe@sunmuc.UUCP       (German EUNet, domain)  |    non-exclusive license |
| ...!suninfo!lchristoph (Sun Germany customers) | 	     to my opinion. |

terry@helios.ucsc.edu (Terry Ricketts) (07/31/90)

In article <8552@mirsa.inria.fr> buffa@mirsa.inria.fr writes:
>
>What is the emulator you are speaking about ? How do you run it ? Medusa is
>definately not public domain, it's sold in Germany.
>
> The emulators I tested WERE NOT PUBLIC DOMAIN ! They were compiled 
>with other softs on a disk with 50 different utilities. The name of the disk 
>was CD147 I think. The CD's serie are disks compiled by pirates with a lot of
>compacted utilities. Don't blame me. I'm not a pirate. Somebody just gave me
>this disk and said: hey, do you want to try the st emulators ? May I had that
>these compiled disks are very useful too (They contain pirated software, and
>that's not good, but they also contain the best of the public domain
>utilities, compiled in a very efficient way)
>
>The second one was a cracked version (only software) of the medusa emulator
>V2.1a I don't know if it is an alpha or beta version, but it works very well.
>It reads directly atari disks, and runs only in the black and white hi-res 
>mode. I ran without problems Signum 2.0, platine st, script, and some other 
>softs. The only problem is that with only One Meg, A lot of programs pop the 
>requester "Not enough memory to run this application". This emulator seemed 
>very bug-free and there was no speed difference with a real atari st.
>

    This makes me very suspicious that the program I got is the one you are
referring to. The BBS's I saw it on are usually very careful not to allow
pirated software to be uploaded. Since there was no documentation with this
program it may have sneaked through. The lack of docs made it very difficult
to figure out how to run it. There were a set of 3 programs & I had to try
various iterations of them in sequence (with each iteration causing my machine
to crash) before I stumbled on the right combination.

    I think at this point I will not pass it on any further, and will notify
the BBS's I saw it on that they possible have a pirated copy on their boards.
I guess I won't mind erasing it  myself too much since I can't find much use
for it (not having any Atari disks). I am sorry to see someone get ripped off
this way before they even get a chance to get their commercial version out
the door! I would appreciate it if no one else would ask me for a copy, since
I am getting rid of mine.
						Terry

| Terry Ricketts			|  Internet: terry@helios.ucsc.edu
| Senior Electronics Engineer		|  	     loel@helios.ucsc.edu
| Lick Observatory Electronics Lab	|  Phone:    408-459-2110
| University of Calif, Santa Cruz 	|

johnf@sag4.ssl.berkeley.edu (John Flanagan) (08/01/90)

In article <lupe.649428113@alanya> lupe@alanya.Central.Sun.COM (Lupe Christoph - Sun Germany Consulting - Munich) writes:
>bbs00203@uafcseg.uucp (Mario Amigo) writes:
>
>Medusa, the Atari ST emulator for the Amiga 2000 is out and receives
>favourable reviews.
>
>I have not heard of PD versions. Medusa includes a tiny board with a few PALs
>to make the hardware look more alike. Ever heard of PD hardware ? ;-)
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Ever heard of the LUCAS and FRANCES boards?  That's exactly what they
are -- public domain hardware.				     

Not that the Medusa stuff is likely to be PD.  It sounds like the BBS
versions are pirated.  It also sounds like it would be very difficult
to use even the commercial version ethically, unless Atari licenses
TOS for use on non-Atari hardware.




John Flanagan				Center for EUV Astrophysics
johnf@ssl.berkeley.edu			University of California
(...!ucbvax!soc1.ssl!johnf)		Berkeley, CA 94720
Manners Maketh Man.			(415) 643-6308