Solved

387 emulator

Posted on 1997-12-15
8
267 Views
Last Modified: 2009-12-16
I'm searching for a free 387 emulator tha runs under Windows 3.11.
If You have one, please mail to:

             s85201@cclix1.polito.it
0
Comment
Question by:Gino121597
8 Comments
 
LVL 5

Expert Comment

by:tabit
Comment Utility
Dear Gino,

387 is half a 386DX, as you probably know.

It is - to be exact - a working FP-unit picked from the 'bad'-die-pile in Intels founderies about 5 years ago.

Either your software is able to emulate the missing floating-point-unit, or you should visit one of the second-hand-PC-vendors and replace your 386SX with a 386DX (upgrade-costs about 2 US$)

Everything else does not make sense in your case.

regards

tabit
0
 

Expert Comment

by:parenti
Comment Utility
Usually 387 emulators did not perform well both in WIN 3.11 and in DOS. They tend to make your system unstable conflicting with other TSR and so on and are/not are able to work in protected mode. I think it is better to go and buy a few dollars chip (a real 387).

Anyway
http://www.irtech.com/treehous/files/G417.htm
give you the choice to test them.
0
 

Expert Comment

by:parenti
Comment Utility
Adding to the previous comment: look in
http://www.cpdee.ufmg.br/simtel/simtel_index_mathcopr.html
0
 

Author Comment

by:Gino121597
Comment Utility
Sorry, but this is a hardware solution, and I would prefer a sotfware solution, till my applications are't so intensive fpu users
0
Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

 
LVL 5

Expert Comment

by:tabit
Comment Utility
If you want the software-solution, use it. Parenti recommend an FPU-emulator. But for performance-reasons I would strongly recommend the 2$-upgrade to a 386DX (which "includes" the 387)

Never emulate something that you can have in hardware for the same price. You can expect in the case of the 387, that the performance will be worse than without the emulator.
0
 
LVL 2

Expert Comment

by:evil_ed
Comment Utility
Yoooh Tabit ...

Where did you get the idea that a 386 contains a copro ???

you're mixing things up a little , 486 dx contains a copro
but not the 386 ... :-)

to much champagne on christmas evening perhaps ... ho ho ho

merry christmas ...
0
 
LVL 5

Expert Comment

by:tabit
Comment Utility
evil ed:

sorry, I missed that. I switched directly from 286 to 486SX to Pentium. But you would certainly agree to the point that to have a hardware 387 for 2 bucks is a much better solution that to slow down the slow 386 with an emulator.

Gino:

did you try the emulator parenti recommended?
0
 

Accepted Solution

by:
parenti earned 50 total points
Comment Utility
I cannot understand in which sense the SW I proposed you are an HW solutions. May be that some mis-alligment in the chat has been there.

So I only can give you again the pointers to the SW-only solution(s) you can try (you will find a tenth of them for any pointer!)

1) http://www.irtech.com/treehous/files/G417.htm
2) http://www.cpdee.ufmg.br/simtel/simtel_index_mathcopr.html

I want to recall that usually the 387 emulators did not perform well both in WIN 3.11 and in DOS (you must choose). They tend to make your system unstable conflicting with other TSR and so on and are/not are able to work in protected mode.

If you were going to work with it,  I definitively think it could be better to go and buy a few dollars chip (a real 387), but if you are playing you can try.

I think that no more can be said on the matter.

My best regards.

Anyway
http://www.irtech.com/treehous/files/G417.htm
give you the choice to test them. Comment from parenti...Adding to the previous comment: look in
http://www.cpdee.ufmg.br/simtel/simtel_index_mathcopr.html
0

Featured Post

Comprehensive Backup Solutions for Microsoft

Acronis protects the complete Microsoft technology stack: Windows Server, Windows PC, laptop and Surface data; Microsoft business applications; Microsoft Hyper-V; Azure VMs; Microsoft Windows Server 2016; Microsoft Exchange 2016 and SQL Server 2016.

Join & Write a Comment

Suggested Solutions

Great sound, comfort and fit, excellent build quality, versatility, compatibility. These are just some of the many reasons for choosing a headset from Sennheiser.
In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
Illustrator's Shape Builder tool will let you combine shapes visually and interactively. This video shows the Mac version, but the tool works the same way in Windows. To follow along with this video, you can draw your own shapes or download the file…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

744 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

17 Experts available now in Live!

Get 1:1 Help Now