larry@nstar.uucp (Larry Snyder) (10/09/90)
does the 2.20 release of 386/ix fully support
motherboards with 12 megs of ram (can the OS
use all 12 megs)?? Someone told me that 386/ix
will only use 8 megs for the OS, and the other
4 megs could be used by ramdisks - but not by
the OS..
--
Larry Snyder, Northern Star Communications, Notre Dame, IN USA
{larry@nstar, uunet!sco!romed!nstar!larry, nstar!larry@ndmath.math.nd.edu}
backbone usenet newsfeeds available
Public Access Unix Site (219) 289-0282 (5 high speed lines)howardl@wb3ffv.ampr.org ( WB3FFV) (10/10/90)
From article <1990Oct09.160925.1433@nstar.uucp>, by larry@nstar.uucp (Larry Snyder): > does the 2.20 release of 386/ix fully support > motherboards with 12 megs of ram (can the OS > use all 12 megs)?? Someone told me that 386/ix > will only use 8 megs for the OS, and the other > 4 megs could be used by ramdisks - but not by > the OS.. Hello Larry, I am running Interactive UNIX 2.2 on an 80486 system, and from what I can see it is addressing all 12meg of avalible memory. I am now debating the possibility of expanding to 13 or 16 meg of main memory. Hope this is what you were looking for... ------------------------------------------------------------------------------- Internet : howardl@wb3ffv.ampr.org | Howard D. Leadmon UUCP : wb3ffv!howardl | Advanced Business Solutions TELEX : 152252474 | 210 E. Lombard St - Suite 410 Telephone : (301)-576-8635 | Baltimore, MD 21202
cpcahil@virtech.uucp (Conor P. Cahill) (10/11/90)
In article <1990Oct09.160925.1433@nstar.uucp> larry@nstar.uucp (Larry Snyder) writes: >does the 2.20 release of 386/ix fully support >motherboards with 12 megs of ram (can the OS Both 2.0.2 386/ix and ISC UNIX 2.2 will make full use of 16MB of memory. I have heard, but not tested that ISC UNIX 2.2 will also make full use of memory above 16MB on EISA machines with EISA controllers. -- Conor P. Cahill (703)430-9247 Virtual Technologies, Inc., uunet!virtech!cpcahil 46030 Manekin Plaza, Suite 160 Sterling, VA 22170
aland@informix.com (alan denney) (10/17/90)
In article <1990Oct09.160925.1433@nstar.uucp> larry@nstar.uucp (Larry Snyder) writes: >does the 2.20 release of 386/ix fully support >motherboards with 12 megs of ram (can the OS >use all 12 megs)?? Someone told me that 386/ix >will only use 8 megs for the OS, and the other >4 megs could be used by ramdisks - but not by >the OS.. That doesn't make much sense and would be a serious limitation, since machines on their supported list can accomodate up to 64MB. I can see problems going over 16MB on ISA bus machines, but I don't see why 12MB would be a problem. Does anybody know how they handle DMA in ISA bus machines with > 16 MB? (e.g. what they do in lieu of AT&T's DMAABLEBUF parm). -- Alan Denney # Informix # aland@informix.com # {pyramid|uunet}!infmx!aland "That money talks I'll not deny. I heard it once. It said, 'goodbye'." - Ogden Nash
aland@informix.com (alan denney) (10/17/90)
In article <1990Oct10.223330.11537@virtech.uucp> cpcahil@virtech.UUCP (Conor P. Cahill) writes: >Both 2.0.2 386/ix and ISC UNIX 2.2 will make full use of 16MB of memory. I >have heard, but not tested that ISC UNIX 2.2 will also make full use of >memory above 16MB on EISA machines with EISA controllers. EISA only??? AT&T's 3.2 can use > 16MB on any machine, though DMA gets rather goofy... I see no technical barrier to supporting > 16MB on MCA, either... do they say why they don't? >Conor P. Cahill -- Alan Denney aland@informix.com {pyramid|uunet}!infmx!aland I'm Pro-Anarchy... and I Vote!
cpcahil@virtech.uucp (Conor P. Cahill) (10/18/90)
In article <1990Oct17.004229.27762@informix.com> aland@informix.com (alan denney) writes: >In article <1990Oct09.160925.1433@nstar.uucp> larry@nstar.uucp (Larry Snyder) writes: >> [question about isc unix & > 12MB of ram deleted] > >That doesn't make much sense and would be a serious limitation, since >machines on their supported list can accomodate up to 64MB. ISC (throught thier sales branch) claims to only handle 16MB in the current release (and the 2.2.1 release due RSN). I don't yet have a system to test this, but I will shortly be setting up a system with 32MB of ram to test it. If ISC can't handle it, then the only choice will be to use SCO (which claims to handle >16MB with the 3.2.2 release). -- Conor P. Cahill (703)430-9247 Virtual Technologies, Inc., uunet!virtech!cpcahil 46030 Manekin Plaza, Suite 160 Sterling, VA 22170
randy@chinet.chi.il.us (Randy Suess) (10/20/90)
In article <1990Oct18.133651.27511@virtech.uucp> cpcahil@virtech.UUCP (Conor P. Cahill) writes:
]
]ISC (throught thier sales branch) claims to only handle 16MB in the
]current release (and the 2.2.1 release due RSN). I don't yet have
]a system to test this, but I will shortly be setting up a system with 32MB
]of ram to test it. If ISC can't handle it, then the only choice will be
]to use SCO (which claims to handle >16MB with the 3.2.2 release).
]
I run AT&T's UNIX 3.2.2 on a 6386 ISA machine with 32 megs
memory. AT&T must do something special with their DMA
stuff.
-randy
--
Randy Suess
randy@chinet.chi.il.us