Dos Prime95
 

Does anyone know if it would be possible to make a dos prime95 or if it has already been done?

[QUOTE=Unregistered]Does anyone know if it would be possible to make a dos prime95 or if it has already been done?[/QUOTE]

There is a REALLY old version available. Other than that you'd have to fiddle with the source code to compile it for DOS.

Where?
 

Where could you get this old version (for manual testing)?

[QUOTE=Unregistered]Where could you get this old version (for manual testing)?[/QUOTE]

Check [URL=http://www.xs4all.nl/~mfvl/prime/primeos2.html]this[/URL] page. Note that what is available is v18 which does not include any optimizations for P4s or Athlons. It also does not include the latest error checking routines.

You can do manual testing (non-PrimeNet) with more recent versions.

v18 also cannot handle exponents above 20 million

Generally the best bet that I have heard brought up is to use a Linux "live" CD to boot from and keep the files on your hard disk. No need to install a new operating system on your comp.

If your computer is too old to run anything other than DOS, it's probably not worth running GIMPS software on anyway. My oldest computer that's participating is a Pentium 133 MHz. It's currently working on a trial factoring of M28507447, with an estimated run time of two months.

regards, Leif.

I could . . .
 

I could use it to factor, I just don't have any OS for it (except DOS).

linuxiso.org

It doesn't have a CD dirve . . .

There are linux distros that will run from a DOS partition.

Does the Linux/Memtest/Mprime disk work for this?
Or is it too much restricted to memory checking?

I think the Linux version should work on DOS if compiled with DJGPP.

...google menuet think thats how to spell it thing boots from a floppy... idk if p95 will work for it you could try that floppy that was floating around the forums for a bit

I tried it, but the graphics arn't very good, and you have to load it from a floppy every time, and it runs slow.

yes but its small and has minimal requirements....

if you have another machine then i would susgest
ltsp.org

I didn't know Prime95 was ported for it, and if it is where can I get it?

yes mprime its also in dl section

Mabey I should rephrase my question. Where can I get a dos program that would LL test, not connect to gimps?

mprime can do that it runs in linux idk about dos there was a version that booted linux from a floopy and then ran a torture test.

I compiled [URL=http://hogranch.com/mayer/README.html#download]MLucas version 2.8[/URL] using DJGPP 2.03.

I tested it with known Mersenne primes under DOS mode of Windows 95:

For n=2281 it produced a segmentation fault.
For n=23209 and n=110503 it shows a Res64 not zero, indicating that the number is not prime.

I can't extract .gz files. Is there anywhere I cann get this zipped?

.gz are gzip files. On Windows systems, you can use 7-zip, for example.

I found that MLucas 2.8 shows the same wrong results in different computers when compiled with DJGPP.

It is possible that for some #ifdef the preprocessor takes the wrong path so the C compiler generates wrong code.

When the DJGPP compiler is running the __DJGPP__ constant is defined.