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- Path: sparky!uunet!paladin.american.edu!auvm!SJUVM!WALSHJ
- Message-ID: <921010.093435.EDT.WALSHJ@SJUVM.BITNET>
- Date: Sat, 10 Oct 92 09:34:35 EDT
- Sender: Nota Bene List <NOTABENE@TAUNIVM>
- From: Jerry Walsh <WALSHJ@SJUVM>
- Subject: Quest for the eschatological RAMbyte
- Newsgroups: bit.listserv.notabene
- Lines: 62
-
- The following information may be of interest to those who are trying,
- like me, to squeeze more available RAM out of their systems. It may be
- (probably will be) old hat to the gurus among us, but for what it's
- worth... (If you're not interested in following the memory thread that
- has been on the list, discard this right now. It gets verbose.)
- At Michael Shalev's suggestion, I downloaded The Last Byte from a
- SIMTEL mirror. This program has a utility to check the chipset in a
- 286 machine to see if you can access the UMBs; if you can, I believe,
- the program can be installed to do so. (I can't, of course, which leads
- to a new corollary for Murphy's law: When 2 potential solutions to a
- problem present themselves, the straightforward one won't work. And the
- roundabout one may not either...) Those who want to try this program
- can find it in the /msdos/sysutl/ subdirectory. It consists of 4 ZIP
- files beginning with TLB. The utility to check the chipset is in the
- file TLB-T211.ZIP.
- Once I got the bad news from TLB I looked at some of the other
- memory programs in the /msdos/sysutl/ subdirectory and found two that I
- think will help me: ADDMEM25.ZIP and VRAM40.ARC.
- UnZIPped, the first produces ADDMEM, a removable TSR that takes ad-
- vantage of idle memory on an EGA or VGA card when the screen is in text
- mode. Depending on your configuration, it claims to add 64 or 96 Kbytes
- to your RAM (and to use 5 Kbytes for itself). It warns you NOT to try
- to load a graphics program while ADDMEM is resident: the system will
- crash. But since it is easily removable, and NB remains adamantly in
- text mode, a couple of lines sandwiching an nb-loading batch file avoid
- such eventualities. I tried it. I loaded NB from the command line
- without ADDMEM; F7 reported 179 Kbytes free. I quit to DOS, loaded
- ADDMEM, and loaded NB again from the command line; F7 reported 269
- Kbytes free. (I have a VGA card with 1M memory.) The program is
- shareware and costs $15US plus $3 s/h.
- The second file, unARCed, yields VRAM. This program makes extended
- memory or disk space available as expanded memory. It can be loaded as
- a permanent TSR (removable only by reboot), or it can be used as a pro-
- gram launcher that is removed when the program finishes. Since I have
- no idea whether NB3.1 (NB4 is still vaporware for me) can use expanded
- memory, I tried VRAM (with some of its cleverer switches) as a launcher
- for the DOS MEM command. Without VRAM MEM reports 567 Kbytes of con-
- ventional memory free on my system; with VRAM, it reports 541 Kbytes of
- conventional memory and 131 Kbytes of expanded memory. I then tried
- both ADDMEM and VRAM to load Lotus's AGENDA program. Results were more
- or less as expected. With neither loaded, the AGENDA memory utility
- reported 141 Kbytes of conventional memory available, and no expanded.
- With ADDMEM alone, it reported 230 Kbytes of conventional, no expanded.
- With VRAM alone, it reported 115 Kbytes of conventional, 64 Kbytes of
- expanded (this puzzles me; I think it should have been 128K). With
- both, it reported 204 Kbytes of conventional and 64 of expanded. VRAM
- is also shareware. The downloadable version is limited: it is set to
- create 128 Kbytes of expanded memory. The registered version ($49US)
- allows the user to determine the amount.
- Now, if any of the gurus on the list (to whom none of this is news,
- I suspect) are still reading, do you have any advice, warnings, or
- other insights into either of these programs or their ilk? Some spe-
- cific questions that occur to me: (1) What use is expanded memory for
- NB3.x? How about for the eschatological NB4? (2) Does anybody have
- any advice on how to juggle a Stackered RAMdrive, PC-CACHE, and VRAM
- in 1 Mbyte of extended memory? (3) If I use VRAM in my AUTOEXEC.BAT
- in TSR mode to create permanent expanded memory, is it possible to
- load any of the device drivers there? (I doubt it, since they've al-
- ready been loaded by CONFIG.SYS, but who am I to set limits to magic?)
- Jerry Walsh
- WALSHJ@SJUVM.bitnet
- WALSHJ@SJUVM.STJOHNS.EDU.internet
-