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From: AHS@PSUVM.BITNET
Newsgroups: comp.sys.ibm.pc
Subject: 386 on PC (repost)
Message-ID: <17248AHS@PSUVM>
Date: Fri, 24-Jul-87 09:57:36 EDT
Article-I.D.: PSUVM.17248AHS
Posted: Fri Jul 24 09:57:36 1987
Date-Received: Wed, 29-Jul-87 00:40:45 EDT
Organization: The Pennsylvania State University - Computation Center
Lines: 116

>>From: hundt@wind.bellcore.com (tom hundt)
>>Well this sounds almost too good to be true!
>>Will someone please re-post the directions?  I guess I missed 'em
>>the first time 'round.
     
Here they are:
     
     
     
1987 May 26                                               00 01 02 03 04
     
I made a mistake in my previous note.  Expanded memory is limited to
8 Megabytes if you use EMS expansion cards such as Intel or AST.
However, Desqview, using the 386 built-in memory management
services, will create an upto 16-Megabyte virtual EMS for *each* virtual
*concurrent* 8086 machine awaken from the 386 by Desqview.  Further, each
of these virtual EMS memories is 32-bit memory since the 386 build them
from the CPU own's 32-bit memory.
     
I append a corrected version and a last minute news supplement.
     
     
     
                                                          00 01 02 03
This week's news:
     
How to turn your PC into a true multitasking 80386 machine for 500$:
(Neither tools nor soldering needed except for a chip extractor).
     
1..  Insert in an empty slot an Everex "286 board for PCs".  That will
give you an 8-Mhz no-waitstate 80286 with 640k of dedicated 16-bit
memory.  Cost: 400$ list, 275$ by mail.  By now, you are already
outperforming the newest IBM 8-Mhz 1-waitstate AT.
     
2..  Remove the 80286 chip from the board you just installed and trade
it for a 80386.  Or get a free sample from Intel.
     
3..  Insert into the now empty 80286 socket a Cheetah "adapter 386"
microcard (3.5x3.5-in).  Place into the empty 386 socket on the
Cheetah your new 80386 chip.  And that is it.
     
Now, your DesqView 1.3 or 2.0 will run the 80386's built-in mode
called "virtual 8086".  DesqView will generate up to 256 totally
independent and multitasking virtual 8086/8088 PC-DOS sessions.
Further, each separate session can use its own dedicated 16 Megabytes
of Enhanced (EEMS) or regular Expanded Memory (EMS).  Naturally, each
session has it own fully adjustable window.  This means that you are
now able to load into the RAM memory of your five year old PC up to
256x(0.64+16)= 4,260 Megabytes of data and programs.
     
Help is on the way, Idea Associates has just started selling a single
1-slot card with 16 Megabytes of RAM on it (16 tiny columns of
1-megabyte sticks which collectively occupy less than half a full
card).  Thus, you will only need slightly less than 300 of these cards
to exhaust the memory capacity of your rejuvenated PC.
     
Fortunately, further help is on the way.  You can now buy "Above Disk"
sofware to create virtual EMS or EEMS by using your hard disk.  Thus,
at most, you will only need a 4,260 megabytes hard disk to exhaust the
new capability of your old PC.  Of course, when you order your hard
disk, it would be prudent to add a few megabytes to hold what you
already have on your present hard disk.
     
 By-mail cost:
          Everex "286 board for PCs"              275      275
          80386                                     0  to  200
          Cheetah "adapter 386"                   140      140
          DesqView 1.3 or 2.0                      45  to   65
                                                 -----    -----
                                                  460      680
          Trade-in allowance for 80286             60  to   10
                                                 -----    -----
          FINAL COST                              400  to  670
     
Should we investigate a mass purchase by the club ???.
     
Michel
     
     
PS: Upon reflection, it seems that the major problem with this scheme
is finding an empty slot on a 5-year old PC.
     
References:
     
Everex Excelerator 286 board for PCs:  PC Magazine, 1987 Feb 24, p.45.
                 Color picture of it:  InfoWorld, Feb 2, p.35.
     
Cheetah "Adapter 386":  Preview, PC Magazine, 1987 Feb 24, p.35.
     
IdeAssociates 16-MBy board color picture ad:  ibid, p.307.
     
TeleWare "Above Disk" ad:  ibid, p.346.
                     and:  PC Magazine, 1987 Feb 10, p.340.
     
----------------------------------------------------------------------
     
     
Last minute news:
     
In case you find you real 386 already to slow, help is already on the
way.  Intel will announce February 16th:
     
          a 20-MHz 386
          a 16-MHz 387 math coprocessor
          a 20-MHz 387 math coprocessor
          a 386 specific DMA controller
          a 386 specific cache controller
     
That should do until next year when we will need a few more megaHertz
and a 5-millisec hard disk just to keep up.
     
Michel
     

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