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UMBDRVR.TXT
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1992-02-22
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UMB_DRVR.TXT Version 5.22 02/20/92
UMB_DRVR.SYS Device Driver
UMB provider for DOS 5.0 on 286 / 386 / 486 systems
Copyright (C) 1991, 1992 All Rights Reserved
Christopher Blum CompuServe: 76625,1041
1022 East Wayne Avenue INTERNET: 76625.1041@compuserve.com
Wooster, Ohio 44691 BIX: cblum
(216)262-3786
KNOWN PROBLEMS
Chip set selections 17 and 18 ( Silicon Integrated Systems 386 and
486 sets ) do not function correctly in this version. I am working on
the problem and will post a new version when they are fixed.
CHANGES IN THIS RELEASE
5.22 [02/20/92] - 'Unbroke' cache systems broken in 5.17;
( Hopefully ) improved handling of false parity
errors during processing;
Added code to handle boot page for MR BIOS;
Fixed handling of certain embedded video roms;
Released UMB_EMS4 EMS simulator.
CHIP SETS CURRENTLY SUPPORTED
00 - User-Specified Available Memory mode
Chip ID(s): None
01 - Chips & Technologies CS8221 NEAT, CS8281 NEATsx,
CS8223 LeAPset, CS8283 LeAPset-sx
Texas Instruments TACT82S411 Single Chip AT
United Microelectronics (UMC) UM82C210 286/386SX AT
Chip ID(s): ( C & T ) 82C212, 82C241 ( 286 )
82C812, 82C841 ( 386SX );
( TI ) TACT82S411 ( 286, 386SX );
( UMC ) UM82C212 ( 286, 386SX )
02 - VLSI Technology VL82C200
Chip ID(s): VL82C201,VL82C202,VL82C203,VL82C204 ( 286, 386SX )
( all 4 chips required )
03 - FOREX FRX36C300
Chip ID(s): FRX36C300 ( 386DX )
04 - Chips & Technologies CS8230 386/AT, CS8231 Turbo Cache 386/AT,
CS8233 PEAKset/386, CS82310 PEAKset DM/386
Chip ID(s): 82C302, 82C307, 82C311, 82C351 ( 386DX )
05 - Chips & Technologies 82C235 SCAT, 82C836 SCATsx, CB8291 ELEAT,
CB8295 ELEATsx, CS8285 PEAKset-sx,
CS8227 CHIPSlite, CS8288 CHIPSlite-sx
Chip ID(s): 82C235 ( 286 ), 82C836 ( 386SX )
06 - ETEQ Micro COUGAR II
Chip ID(s): 82C491 ( 386DX, 486 )
07 - OPTi Sx/AT, Sx/AT Cache
Chip ID(s): 82C281, 82C282, 82C283 ( 386SX )
08 - OPTi DX/BB PC/AT
Chip ID(s): 82C496 ( 386DX, 486 )
09 - OPTi 386WB PC/AT, 486SXWB PC/AT
Chip ID(s): 82C391 ( 386DX ), 82C493 ( 486 )
10 - OPTi 386/486WB EISA
Chip ID(s): 82C682 ( 386DX, 486 )
11 - Elite Microelectronics Eagle, Falcon
Chip ID(s): e88C311 ( 386DX ), e88C411 ( 486 )
12 - VLSI Technology SCAMP
Chip ID(s): VL82C310, VL82C311 ( 286, 386SX ), VL82C311L ( 286 )
13 - VLSI Technology VL82C286, VL82C386 TOPCAT
Intel 82340SX, 82340DX
Chip ID(s): ( VLSI ) VL82C320 ( 286, 386SX ), VL82C330 ( 386DX )
VL82C320A ( 286, 386SX, 486 )
( Intel ) 82343, 82346 ( 286, 386SX )
82343A ( 286, 386SX, 486 )
14 - OPTi HiD/386 AT, HiB/486 AT
Chip ID(s): 82C382 ( 386DX ), 82C482 ( 486 )
15 - Sun Electronics SUNTAC ST62CS24, ST62CS25
Chip ID(s): ST62C241 ( 286 ), ST62C251 ( 286, 386SX )
16 - Texas Instruments TACT83000
Chip ID(s): TACT83442 ( 386SX, 386DX, 486 )
17 - Silicon Integrated Systems High Performance 80386
Chip ID(s): 85C310 ( 386DX )
18 - Silicon Integrated Systems High Performance ISA486
Chip ID(s): 85C401 ( 486 )
BAD NEWS ( CHIPS THAT WILL NOT BE SUPPORTED )
Chips & Technologies: CS8220(82C201/82C202) [1]
Intel: 82335/82335SX [2]
Sun Electronics ( SUNTAC ): ST62CS02(ST62BC002) [1]
United Microelectronics ( UMC ): UM82C230(UM82C231) [1]
VLSI Technology: VL82C100 [1]
Western Digital: ( Faraday ) FE3021/FE3021A [2]
Notes:
[1] - No shadow ram support
[2] - Lock feature prohibits access
MAYBE? ( NEED TECHNICAL DATA TO SUPPORT )
ACER
American Megatrends (AMI) - Megatrends custom chips, *NOT* BIOS
COMPAQ
IBM PS/2
Micronics - custom chips
PC-Chips brand chip set(s)
Toshiba
I have been unable to get any documentation for these systems. If
you can have your system vendor or the chip set manufacturer
contact me, I will try to include support for them.
COMING ATTRACTIONS ( SUPPORT PLANNED OR UNDER DEVELOPMENT )
ACC Microelectronics: 2036 [2], 2046
Headland Technology: HT12/HT15 [1], HT18/HT21/HT22 [2], HT322
Intel: 82350 EISA(82359), 80386SL(Intel386SL)
OPTi: L1/L2 Notebook
Symphony Laboratories: SL82C360(SL82C361), SL82C460(SL82C461)
Texas Instruments: TACT84500 EISA(TACT84542)
United Microelectronics ( UMC ): UM82C380(UM82C384) [1]
VLSI Technology: VL82C486
Western Digital: WD6000/WD75C10/WD76C10/WD7710/WD7910 [1]
ZyMos Corporation: POACH(82C230/82C231)
Notes:
[1] - Support minimal ( maximum 64K UMB area ).
[2] - Support limited ( maximum 128K UMB area ).
If your chip set is not listed, have your system vendor or the chip
set manufacturer contact me and I will try to support it.
A newer, more flexible ( read as less Neanderthal, approaching the
Bronze Age ) user interface is coming as soon as I get the time.
Also in the works are features to save even more precious memory
below 640K by:
- loading the primary shell ( COMMAND.COM ) into upper memory
- relocating all DOS areas possible to upper memory, including
FCBS=, FILES=, BUFFERS=, STACKS=, and LASTDRIVE=
- allowing the lower portion of the video ram area to be switched
in and out to expand DOS base ram beyond 640K but not inhibit
graphics modes ( only for chip sets with video area support )
I have ( I think ) found a way to *reliably* test for and list the
chip set in a machine. I will be including a separate program to do this
in the package soon. Of course, it will only recognize the chip sets it
supports, so a negative result will not necessarily mean you have a chip
set that will not be supported later.
If there is enough interest, I will also write device-specific EMS
drivers for the hardware facilities in the EMS-capable chip sets. Please
Email or surface mail your thoughts ( no phone calls on this, please -
save those for support questions ).