Messages in this thread | | | Date | Sat, 23 May 1998 16:01:48 -0400 (EDT) | From | "Mike A. Harris" <> | Subject | Re: Rampage Plus 286 EMS boards programming info. |
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On Thu, 21 May 1998, Riley Williams wrote:
> >> Plug your board into a computer and see if the computer registers > >> the extra memory. > > > Nope. The driver needs to be installed to get anything. > > Usually the case...
Yeah.
> >> Furthermore using the boards for actual memory may be impossible. > > > Although using them for actual memory would be useful, my > > intention was to use it for a RAMDISK for a swapfile. > > Probably the best choice.
Yep.
> >> You will have to access it thru 16K pages, only 4 of which will be > >> present in the EMS page frame at any one time. If you determine > >> that it is an EMS board then first thing you should do is contact > >> AST to see if they have any techical information of the card. > > > I have written to AST technical support a couple of days ago, and > > not received a reply back yet. > > >> BTW, the card may well be EEMS instead of EMS as AST was one of > >> the backers of EEMS. > > > I'm not familiar with EEMS... > > It's an enhancement of the original EMS 3.2 standard which allows more > than four pages to be mapped into processor memory, and EMS 3.2 and > EEMS were merged to produce EMS 4.0, which is the standard implemented > by EMS386.EXE under MSDOS...
Ahhh. I see. I only used XMS and EMS in one program I was writing, and didn't know much about the details, other than that it used the pageframe to map 16k pages (EMS). After that I moved on to PMODE with DJGPP.
> >> If you are unsuccessful in this route then its time to reverse > >> engineer the card. > > > That is what I figured I'd have to do. I've got the driver REMM.SYS > > dumped with DOS DEBUG, and have looked for OUT instructions to find > > the ports used. This is tricky business however! I think I'd have > > to debug the running driver to really see how it works, and that is > > over my head currently. > > If you'd care to let me have a copy of the REMM.SYS file, I can go > through it and see what I can sort out for you?
Gladly! It's attached in a separate message...
> > Great! I use Borland Turbo Debugger. I've never traced into any > > active device drivers (it usually locks up the machine on me...) > > but I'll give it a whirl if the card works properly. > > Best wishes from Riley.
Thanks.
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