Ah, now I see. The modem driver uses 386 tricks to provide a virtual serial port, but conflicts with EMM386's own trickery. <g>
Oh, well, maybe you can still use HiMem and DOS=High to save some conventional memory? The phrase "memory managers such as HIMEM/EMM386" might mean "HiMem and/or EMM386", however it might instead mean "HiMem with EMM386" - hopefully it's the latter. If you can use HiMem, the DPMS stuff still applies, but it is only relevant for DPMS-aware drivers and TSR's. Joe. On Tue, 28 May 2002 08:03:23 -0400, Howard Eisenberger <[EMAIL PROTECTED]> wrote: >On Tue, May 28, 2002 at 04:21:57AM +0000, Joe da Silva wrote: > >> >I have been testing DOS PPP on a 386sx16 laptop with less than 2 >> >meg ram and parallel port pocket modem. The modem driver is not >> >compatable with emm386 so I have to run everything in conventional >> >> Ouch!!! You don't say which EMM386 you are using. You might try >> another one? For example, the DR-DOS 7.XX versions have had a few >> problems, although the one from DR-DOS 7.03 (or 7.02 update) is >> not too bad. AFAIK, the MS/IBM versions are well behaved, as is >> the one from DR-DOS 6.0 (which was actually the version Caldera >> used in the DR-Webspyder demo!). Failing this, you just have to >> make do with HiMem and use the "DOS=high" setting in CONFIG.SYS, >> at least that will get most of the DOS out of the conventional >> memory. > >From the docs (1993): >"The Xircom Pocket Ethernet Modem is 'software driven'... does NOT >currently support OS2, Unix PC environments or Apple computers." > >-It comes with software for DOS and Win3 only. > >"Redirection of the communications port under DOS is not supported >using memory managers such as HIMEM/EMM386." > >-At various times I have confirmed this with MS-DOS, Open/DR-DOS, >and FreeDOS. > >"The DOS redirector is compatible with Quarterdeck's QEMM memory >manager, version 7.03 or later." > >-I also tried this, and while the drivers do load, the system is >unstable with frequent exception errors. > >> Also, if you are using DR-DOS 7.XX, you can make some >> drivers such as NWCACHE and NWCDEX run in extended memory, by >> loading the DPMS driver first. > >I can try this, but with the small programs I am running and >limited extended memory, I think I can make do without a disk >cache. Most of the stuff I am using should (theoretically) run >on an XT. > >> (BTW, I know nothing of parallel port modems.) > >I believe that this particular model (14.4 + NIC) sold for $400 >back in '93. I picked it up for $60 a couple of years later when >the original owner upgraded to Win95 (no drivers for that either). >I used it for a few years on the laptop mainly for terminal dialup. > >I can avoid the hassle, by using a real external modem, but I have >to cut it back to 9600 with the old serial port. I was also planning >to try the NIC, instead of PPP over null-modem (slow), which I am >doing now. > >Anyway, for this DOS "survpc", which I have only recently taken >out of retirement, LSPPP's small memory footprint seems to be >pretty important. > >Howard E. > >-- ><http://www.ncf.ca/~ag221/> To unsubscribe from SURVPC send a message to [EMAIL PROTECTED] with unsubscribe SURVPC in the body of the message. Also, trim this footer from any quoted replies. More info can be found at; http://www.softcon.com/archives/SURVPC.html
