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-
- UMBMEM.EXE
-
-
-
- UMBMEM.EXE - C & T NEAT Upper memory Manager
-
- Copyright (c) 1991, Jay B. Harlow, All Rights Reserved.
-
-
- This package contains 2 device drivers to implement the UMB calls
- for the HIMEM.SYS XMS driver. One driver is for 386/486 only
- machines, the other is for 286 or above. Neither driver WILL work on
- an 8086 machine due to 286 & above specific instructions, not only
- that AT (tm) by definition is 286 or higher! This driver will only
- work on 286 or 386 machines that have C & T NEAT chipsets. I was
- meaning to write this for awhile, and with the release of DOS 5.
- I figured now is a good enough time.
-
-
- UMBMEM is being released as SHAREWARE. You may use, copy,
- give, or distribute this COMPLETE package any way you choose, I
- just ask that if you find that it is very useful for your machine
- that you send me $15.00 for each copy that you use in US dollars.
- I also would prefer that you not sell this for profit, but you
- may include this package as part of your package... ie Resellers
- may install it on the machines they sell so long as they don't
- include a charge for it...
-
- Jay B. Harlow
- dba T.S. Bradley
- 2501 8th St N #3
- Bismarck ND 58501-1111
- 701-223-5502
- harlow@plains.nodak.edu
-
-
- PACKING.LST:
- UMB286.EXE - 286 version of driver.
- UMB386.EXE - 386 version of driver.
- README.TXT - this readme
- TESTUMB.EXE - Allocates & Frees UMB blocks to see if umbmem works.
- TESTUMB.C - C source to test program (QC 2.51)
- UMBHELP.ASM - MASM source to test program (QC 2.51)
- TESTUMB.MAK - make file (WC 2.51)
- UMBHELP.H - include file
-
- I install UMBMEM on my machine by copying umb386.exe to
- \device\umbmem.exe then adding the above line to my
- config.sys
-
-
- Installation:
-
- CONFIG.SYS
- DEVICE=HIMEM.SYS <-- important needs to be first!
- DEVICE=UMBMEM.EXE options
- DOS=UMB
-
- Dos command line (AUTOEXEC.BAT)
- UMBMEM options
-
-
- OPTIONS:
- M=pppp
- number of paragraphs for minimum free block, this is
- the block size that a free block can be.
-
- I=mmmm-nnnn
- defines a useable range of upper memory to use for
- UMB's. If this option is specified an autoscan of
- shadow memory will not be performed.
-
- X=mmmm-nnnn
- defines a range of upper memory that should not be used
- for UMB's ie video memory, hard disk memory, LIM page frame.
-
- W
- make the available upper memory look like bios extentions.
- may help fool windows into enhanced mode...
-
- DEFINITIONS:
- pppp a hexidecimal number 0 to 4 digits.
- mmmm 1-4 hex digits specifying start of shadow memory
- nnnn 1-4 hex digits specifying end of shadow memory
-
-
- SAMPLE:
- DEVICE=\DEVICE\UMBMEM.EXE M=6 I=A000-AFFF I=C000-C7FF I=CC00-EFFF
-
- This lines loads UMBMEM with a minimum of 6 paragraphs on free
- memory. Valid UMB memory will be 64K at A000 (I have a Hercules MDA
- card), 32K at C000, and 144K at CC00. I have a Seagate SCSI
- controller at C800. For a total of 240K of Upper Memory. UMBMEM
- automatically loads itself into the first free UMB.
-
- An alternate to the above line is:
- DEVICE=\DEVICE\UMBMEM.EXE M:6 I:A000-C7ff I:CC00-EFFF X:B000-BFFF
-
- Which says the same thing...
-
- If you prefer:
- DEVICE=\DEVICE\UMBMEM.EXE
- this will cause UMBMEM to auto scan memory from C000-FFFF
-