Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.os.msdos.programmer > #584

Re: DOS and DPMI

Show all headers | View raw

On 2012-05-13 22:10, Geoff Barnard wrote:
> Hello,
>
> Maybe I'm digging myself a deeper hole each time?
>
> I've had to get a new laptop, as the old SONY died.   I was fine with that
> one, it had a built in floppy, and XP did some useful things.
>
> The new one has no floppy, although I've got a USB one.   It's got W7 mind
> you.
>
> I could do with having W7, as I've got a number of issues I need to check
> out with that, but the immediate problem is to run DOS progs, and most
> important to be mobile with my MS C7 compiler setup, Libs etc.
>
> On my main desktop PC there's no problem as that's a Pentium booting into
> DOS, and using 386Max which includes all reqs for the C7 stuff, in fact
> 386Max was supplied with the compiler.
>
> I spent some time playing with DosBox, and this seemed to get me nowhere
> with the DPMI.   I find it appears very slow, OK I understand it's emulating
> a DOS prompt but it still seems slow.
>
> I tried another tack.   I can boot DOS on the floppy, and this gives a great
> DOS prompt.   Cannot access the NTFS HD.   So I changed the HD setup, and gave
> myself a 2 Gb FAT partition, but DOS wouldn't see that.   Thought it might not.
> So, I tried DR-DOS, and this copes better with BIG HDs, and this does give
> me a DOS with the 2 Gb HD, and when I boot up into W7 I can still see the
> HD so that's more usefull.
>
> When I tried to install 386Max, this went through the initial motions OK
> but when I tried to continue with MAXIMIZE the system locks up.
>
> If I try to use add-on DPMI processes, these seem to do something but
> when I try to compile something CL gives a message to say 'No DPMI'.  But
> supposedly there IS DPMI.
>
> I've tried the JEMM process, this seems to work great and does a lot of
> what 386Max would do and again says I've now got DMPI.   I test prog coming
> with djgpp says there's DPMI.   A test prog coming with the HX system says
> DPMI is OK.   But CL will NOT run.   BLINKER will run fine, and I think that
> needs DPMI as well??
>
> Maybe I'm almost there, but CL is looking for something else?
>
> Does anyone have any suggestions?   I've been looking for any prog that
> might 'test' DPMI and confirm that it is there, GO32 with djgpp says it IS.
> Anyone any ideas why 386Max might not work - the manual does refer to a
> lockup at the same point but is suggesting changing settings but my lockup
> is immed before anything else is set??
>
> Feeling I'm very nearly there - could be something silly is missing.   Maybe
> I cannot see the wood for a partic tree that's stuck in my face??
>
> Any suggestions gratefully received.

If you're laptop is anywhere above the minimum specs for W7, why not 
download Oracle's Virtalbox and use that to run DOS in a pure virtual 
environment.

There are many flavours of DOS around on the internet, although some 
might be a bit of work to install them. I'm using a legal version of 
IBM's PC DOS 2000, and that works flawlessly, once you manage to install 
it by tweaking the images that are included on the CD ROM, VB requires 
them to be exactly 1,474,560 bytes, which means you need a hex editor (I 
used HxD) to add a load of x'00's to the end of each image file.

Robert
-- 
Robert AH Prins
robert(a)prino(d)org

Back to comp.os.msdos.programmer | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

DOS and DPMI "Geoff Barnard" <geoff@jgb17not.co.uk> - 2012-05-13 22:10 +0000
  Re: DOS and DPMI "Rod Pemberton" <do_not_have@notemailntt.cmm> - 2012-05-13 20:49 -0400
    Re: DOS and DPMI "Auric__" <not.my.real@email.address> - 2012-05-14 06:23 +0000
  Re: DOS and DPMI cg_chas <cg_chas@hotmail.com> - 2012-05-13 22:58 -0400
  Re: DOS and DPMI Robert AH Prins <spamtrap@prino.org> - 2012-05-14 07:48 +0000
  Re: DOS and DPMI Rugxulo <rugxulo@gmail.com> - 2012-05-14 17:10 -0700

csiph-web