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Article #3748

Re: EMS and UMB's under EMM386?

#3748
From: CHERRIMAN PJ
Date: Tue, 26 Jan 1993 16:11
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In <1993Jan21.182428.4485@dcatlas.dot.gov> joet@dcatlas.dot.gov (Joe Trott) writes:

>shtmar04@uctvax.uct.ac.za writes:

>>I've never understood,  (or pretended to understand) the ins and outs of PC
>>memory control - and now I'm stumped.  Could someone please tell me if I can
>>allocate some memory to EMS (not all) and still have UMB's?  Sorry for the
>>ignorance!

>>My system: 4dos4.01,  486DX,  8megs RAM, using smartdrv with 2megs of it!
>>If I try giving EMM386 a number it fetches me that amount of EMS but doesn't
>>give me UMB's - ergo little conventional memory left.

>>CONFIG.SYS contains : DEVICEHIGH=EMM386  noems i=E000-EFFF

>>What should I change the noems to?

>Make sure you have the line : DOS=HIGH,UMB  in your config.sys.  Then you can
>take out the  noems i=e000-efff  parameter.  Replace it with the amount of
>ems you need, e.g. :

>device=himem.sys
>device=emm386.exe 4096
>dos=high,umb
>...

>..will load DOS in the HMA, will make 4096K (4mb) available as ems, and will
>give you access to UMBs for devicehigh and loadhigh statements.

I think this is wrong, on my system I have:

emm386 i=e000-efff ram

The ram or noems switch is required for UMB's

SO for 1M of EMS use:

emm386 1024 i=e000-efff ram

Peter Cherriman - pjc90@uk.ac.soton.ecs
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References: <1993Jan14.160010.203462@uctvax.uct.ac.za> <1993Jan21.182428.4485@dcatlas.dot.gov>

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Path: arc1-ca.pugleaf.net!sparky!uunet!inmos!fulcrum!bham!warwick!doc.ic.ac.uk!sot-ecs!pjc90
From: pjc90@ecs.soton.ac.uk (CHERRIMAN PJ)
Newsgroups: comp.os.msdos.misc
Subject: Re: EMS and UMB's under EMM386?
Message-ID: <14299@ecs.soton.ac.uk>
Date: 26 Jan 93 16:11:24 GMT
References: <1993Jan14.160010.203462@uctvax.uct.ac.za> <1993Jan21.182428.4485@dcatlas.dot.gov>
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