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- X-Mailer: ELM [version 2.2 PL16]
- Message-ID: <199301271635.AA26629@lobby.ti.com>
- Newsgroups: bit.listserv.sas-l
- Date: Wed, 27 Jan 1993 10:35:46 CST
- Reply-To: "R. Snyder" <rsnyder@LOBBY.TI.COM>
- Sender: "SAS(r) Discussion" <SAS-L@UGA.BITNET>
- From: "R. Snyder" <rsnyder@LOBBY.TI.COM>
- Subject: Re: Expanded memory with PC-SAS
- Comments: To: goes@chimera.sph.umn.edu
- Comments: cc: sas-l@uga.cc.uga.edu
- In-Reply-To: <199301271604.AA25374@lobby.ti.com>; from "Jim Goes" at Jan 27,
- 93 9:35 am
- Lines: 45
-
- SUBJECT: 6.04 and exPANDed memory.
- SUMMARY: I talked to SI Tech Support.
- REL/PLTF: 6.04/PC
- E-ADDR: rsnyder@lobby.ti.com
- NAME: Bob Snyder
- COMPANY: Texas Instruments, Sherman, TX
- PHONE: (903) 868-5799
- FAX: (903) 868-7240
-
- The last time I saw this topic on the List I generated this summary of data
- given to me by SI:
-
- >
- > Instead of seeing how far I could shove my foot into my mouth I decided to
- > get with SI Tech Support.
- >
- > Their wisdom is that exPANDed is a kludge and that SAS's use of it is also
- > a kludge. Roughly 60% of the 6.04 SAS program modules can be loaded into
- > expanded memory. Some modules are non-deletable once loaded and some will
- > be purged when not needed. The only way you would need more than 2M of
- > exPANDed memory is if you run enough diverse applications in one session to
- > load 2M of non-deletable code. SAS does not put any data into expanded
- > memory. Data is put only in conventional memory. DOS 5.0 helps here.
- >
- > SAS provides two commands for memory management, cde and cdm. cde executed
- > from the SAS command line will tell you how much conventional memory is
- > available. cdm will list the modules loaded into expanded memory, their
- > starting addresses, and if they're non-deletable.
- >
- > Tech support gave me two ideas for making use of extended/expanded memory
- > beyound the 2M of expanded used by SAS directly. One is to make a RAM disk
- > and use a batch file to load the modules that cdm shows you use
- > the most onto the RAM disk. The path commands in the config.sas
- > file will have to be modified to have SAS look on the RAM disk first for
- > this to be effective. You may also put the SASWORK directory on RAM disk
- > which would speed up access to tempory data. The hazard of placing the
- > SASWORK directory on RAM disk is that running out of space causes a complete
- > system crash. Some folks use both methods.
- >
- > Another suggestion is to use a product like QEMM which can allow you to
- > borrow from video memory. This creates more conventional memory just as
- > DOS 5.0 does by relocating part of the kernal.
- >
- > Regards,
- > Bob
-