1152 lines
58 KiB
Plaintext
1152 lines
58 KiB
Plaintext
|
|
|
|
Building an IBM Compatible
|
|
or How to be a real Clone
|
|
DJ Elliott
|
|
|
|
|
|
|
|
PC HELP
|
|
Box 19401
|
|
Baltimore, Md 21206
|
|
301-661-1921
|
|
GKHF68A-Prodigy
|
|
|
|
**********DISCLAIMER**********
|
|
|
|
|
|
Although I believe this to be a project that any reasonably intelligent
|
|
person can accomplish, the Author assumes no responsibility for failed
|
|
attempts, errors, omissions or injuries or losses connected to the use
|
|
of the information contained herein. If you need help, get it. If you
|
|
are not sure, ask. So there.
|
|
|
|
Copyright 1990 DJ Elliott. All Rights Reserved.
|
|
|
|
If received via BBS
|
|
I INVITE YOUR COMMENTS AND YOUR CRITICISM. PLEASE SEND ME E-MAIL
|
|
WITH YOUR RESPONSE. YOU ARE FREE TO UPLOAD IT TO OTHER BBS'S IN
|
|
IT'S ENTIRETY WITH NO CHANGES TO THE TEXT. COMMENTS SHOULD BE
|
|
OUTSIDE OF THE ARTICLE.
|
|
|
|
DJE January,1991 Version 1.3
|
|
|
|
Revision History- Original November, 1989.
|
|
|
|
This is a living document. It is being corrected and expanded
|
|
constantly. Below is the date of the latest modification.
|
|
|
|
January 7, 1991
|
|
|
|
|
|
|
|
|
|
|
|
Yes, You Can!
|
|
Build your own IBM Compatible Computer
|
|
|
|
by DJ Elliott
|
|
|
|
With very little know how and using only what you already know about IBM
|
|
Compatible Computers, it is an easy and enjoyable task to assemble an
|
|
80286 Machine for a total of about $800. This machine will look like a
|
|
store model and do everything a store bought system will do, and leave
|
|
you $1000 or more for other pursuits.
|
|
|
|
The Machine can be built in your spare time in a few days, or over a
|
|
number of weeks or months, adding the parts as you can afford them and
|
|
find them at the right price.
|
|
|
|
This author, over three months of occasional work and with no formal
|
|
training, built a 12 Mhz 80286 Compatible Machine with 2048K Memory, a
|
|
5 1/4 and 3 1/2 Inch drive, a 10 meg hard disk, Parallel and Serial
|
|
Ports, and a 1200 bps Modem. Actual work time was in the neighborhood of
|
|
10 hours. This unit is a virtual Rocket, running 700% faster than an IBM
|
|
XT (source: PC Tools Diagnostics). A soldering gun was used ONCE, to
|
|
add a switch (optional for my uses). The gun was the most technical
|
|
piece of equipment used. There was no test equipment, special tools or
|
|
mathematics involved. This article is written on the described Machine.
|
|
Since that time, I have assisted in the building of several other
|
|
machines, and advised on many others. Over 300 people have downloaded
|
|
the original article. Once you start, you are hooked. I have since
|
|
increased memory to 4 megs and bought a used 40 Meg hard drive at a show
|
|
for $40 and I constantly improve and upgrade the machine as I learn
|
|
more, which is the real lasting fun of the project.
|
|
|
|
Why build a computer instead of buying it? MONEY and fun. This machine
|
|
would easily go for between $1200 and $3000. Most parts are under
|
|
warranty, and you are not "stuck" with a computer that does not work.
|
|
Just have the offending part replaced or serviced.
|
|
|
|
Compatibility- What makes this process nearly idiot proof is the
|
|
architecture- everything plugs in or screws together. If you can build
|
|
a model car with Legos or hook up a stereo, you can accomplish this.
|
|
|
|
IBM made the decision years ago that the MS-DOS PC would be an Open
|
|
Architecture System- a flash of brilliance that led to their domination
|
|
of the Market- and made Apple an also ran.
|
|
|
|
Whatever part it is that you are looking for, it is made by a number of
|
|
different manufacturers at a number of different price points, and,
|
|
wonder of wonders- they fit into the same slot the same way. An ABC
|
|
Motherboard accepts a DEF Controller, which runs a GHI Hard Drive, which
|
|
fits into a JKL kit, and takes MNO disks.
|
|
|
|
Make your decision to build this project, don't look back, and plan on
|
|
your Check Writing, Tax Work, Recipes, Letter Writing, and work from the
|
|
office to be as close as your living room and as fast as your machine at
|
|
work.
|
|
|
|
This article has evolved from a six page general outline to almost book
|
|
length. As of this revision, the article has been split into two
|
|
distinct sections: a concise how-to of the basics, followed by lengthier
|
|
information that you will most definitely need wither to narrow down
|
|
your final buying decision or to support you as you debug your hardware.
|
|
|
|
|
|
The Basic Parts
|
|
|
|
There are a number of items you will need to get started and they are
|
|
easily obtained. All compatibles have the following components:
|
|
|
|
*A Case
|
|
*A Motherboard (w/CPU and BIOS)
|
|
*A Power Supply
|
|
*A Keyboard (or other input device)
|
|
*A Monitor
|
|
*A Disk or Hard Drive (I/O device)
|
|
*ROM [Read Only Memory] -the basic instructions
|
|
*RAM [Random Access Memory]- your work space
|
|
*Controllers
|
|
|
|
The more useful options are:
|
|
A second Disk Drive or a Hard Drive;
|
|
a Modem;
|
|
a Mouse;
|
|
a Printer.
|
|
|
|
PREFACE
|
|
This article started at 5 pages. It is turning into a book. That's good
|
|
in that I'm passing along lots and lots of information that will save
|
|
you days or weeks of trouble and lots of dollars. It's bad in that the
|
|
technical jargon may turn you off. It shouldn't. The actual building
|
|
process is something you absolutely should be capable of doing. Here is
|
|
a one paragraph summary of what you will be doing:
|
|
|
|
You will buy a case, install the motherboard and set a few jumpers per
|
|
the documentation. You will fill some empty sockets with memory chips.
|
|
You will put in a little silver box that is your power supply. You now
|
|
have a computer. You will next insert a card into a slot and hook a
|
|
monitor to it. You will plug the keyboard into the back. You will plug
|
|
in a card which controls the disk drives, and hook the drives up. You
|
|
will turn on the machine and tell the computer about the stuff you have
|
|
added. That's it. Really. The balance of this article is to help you
|
|
decide which monitor, drives, etc. to buy, and then gives lots and lots
|
|
of advice for avoiding pitfalls along the way. Each of these pitfalls
|
|
caused me heartaches and headaches. I pass the solutions on to you so
|
|
that you may avoid the problems.
|
|
|
|
If you want to cut to the skinny, here is a short list of the parts for
|
|
a recommended system:
|
|
|
|
You may, for $500-700, buy the following in one morning at a computer
|
|
show-
|
|
|
|
A baby tower case with power supply, an 80286 motherboard, 2 meg of 1
|
|
Meg chips (18 chips), a 256K VGA Card, a Mono VGA monitor, a hard floppy
|
|
controller, a 5 1/4 and 3 1/2 disk drive, a used 10 meg hard drive and
|
|
an AT compatible keyboard.
|
|
|
|
To do it your way, and to solve problems as you go, read on... Put on
|
|
your 70 Nanosecond secret decoder ring, and let's blast off!
|
|
|
|
Step One
|
|
Buy a Magazine! (!?!) An indispensable tool is Computer Shopper
|
|
Magazine, published Monthly and available everywhere. It lists the
|
|
CATALOG prices for everything you need, in all the various options. If
|
|
you have three weeks to wait, you will get the absolute best prices on
|
|
whatever new and current you want (see Computer Shows for the
|
|
exception). Otherwise, you will have the basis for comparison for
|
|
shopping elsewhere. A general rule of thumb:
|
|
|
|
Catalog prices are
|
|
|
|
- 40% Lower than Discount Store Price
|
|
- 60-80% Lower than Computer Store Price
|
|
- 20% Higher than Computer Show Price
|
|
|
|
there will be exceptions, of course.
|
|
|
|
Example: 1 Meg 80 Nanosecond RAM Chips
|
|
Computer Store- $30 each
|
|
Warehouse Store- $18 each
|
|
Catalog- $9 each
|
|
Computer Show- $6 each
|
|
|
|
The above are actual prices updated regularly with this article.
|
|
|
|
Spend an entire evening reading this magazine cover to cover- it is
|
|
equivalent to an entire College Course in 6 hours. Your head will be
|
|
stuffed with new information and insights.
|
|
|
|
A Brief Description of Your Buying Options; advantages and
|
|
disadvantages.
|
|
|
|
Computer Shows
|
|
Held around the area by different Companies- watch the local paper
|
|
Business Section and the back of Computer Shopper Magazine. Careful
|
|
buying is the watchword. Buy all your Cables and miscellaneous parts
|
|
here.
|
|
|
|
Ask lots of questions about other pieces from information you gleam
|
|
here, from Magazines, and from Books you run across. Knowledge is
|
|
Power. They will mislead you to make a sale- but won't make any
|
|
patently false statements. My purchase of a 3 1/2 Disk Drive was a
|
|
great buy until discovering from the Panasonic Technical Department that
|
|
it won't run in Motherboards made after 1985! But the Dealer mailed me
|
|
a refund.
|
|
|
|
Catalogs
|
|
As stated before, the main drawback is the wait; and don't forget that
|
|
you have to add shipping and handling costs to the price. Invest the
|
|
dollar to call the Advertiser's Technical Line and ask questions: is
|
|
this Hard Disk Controller MFM or RLL? Is it 8,16 or 32 bit? (don't get
|
|
thrown by this jargon- you will learn it quickly. It's analogous to
|
|
asking Is it Front or Rear Wheel Drive? 4 or 8 Cylinders? Someone who
|
|
never drove a car would be just as thrown by those questions.)
|
|
|
|
I have recently had a real nightmare dealing with a Mail Order house in
|
|
Texas. We were up to 4 bad shipments before we called Computer Shopper,
|
|
who laid down the law to the turkeys. An exasperated president called
|
|
the day after we called Computer Shopper and said "What do you want?" We
|
|
told him, and we got it. Air Freight. Free. Most houses in Computer
|
|
Shopper are very reputable. Just be careful, and call the tech line and
|
|
ask lots of questions. If they have no time for you, you have no money
|
|
for them.
|
|
|
|
Discount Store
|
|
When buying a piece that may take two or three times to install right-
|
|
such as a Disk Drive- the extra money may be worth it. Questions like
|
|
Which pin is this jumper set on to make this Drive B and High Density?
|
|
is tough to answer if you are a Catalog Dealer. Make your decision
|
|
based on how comfortable you are installing the part. The best source
|
|
of all is the sales and repair place you now use for work. Making
|
|
friends with your Service Rep gets you into the back room- where all the
|
|
Used but working Parts are kept (and can be bought!!) Where do you think
|
|
all the parts went when you upgraded your XT to a 286 at work?
|
|
|
|
Computer Store
|
|
BIG Companies get BIG prices having slick salesmen who frown knowingly
|
|
at your questions. They don't want you to buy a part-they want you to
|
|
buy a System.
|
|
|
|
Your first buy:
|
|
|
|
The Case
|
|
|
|
|
|
The XT
|
|
An XT style Case Allows for an 8088 based Motherboard or a Baby AT-
|
|
most motherboards will fit in here.
|
|
|
|
The AT Case
|
|
The "true" AT Case has become a dinosaur. It's a BIG case designed for
|
|
an AT size Motherboard. Almost every motherboard I have seen in the last
|
|
year fits into a Baby AT configuration, and the new AT size cases have
|
|
provisions for fitting a Baby AT board. You would want to pick this case
|
|
if you have saved money by purchasing a full size hard drive that will
|
|
not fit with two drives in a smaller case.
|
|
|
|
The Baby AT
|
|
(Aw...isn't it cute??) Uses a Motherboard sized to fit in an XT size
|
|
case. My original choice. Most AT parts (except a full size
|
|
Motherboard, full size Power Supply (XT size) and some 16 bit cards fit
|
|
in here. Takes less room, just as fast.
|
|
|
|
Avoid "ultra slim line" and such cases. If a standard peripheral won't
|
|
fit, you are headed in a woefully wrong direction. I have recently seen
|
|
some jet black systems. They look really neat, but I haven't seen just
|
|
the case in black yet. Maybe I'll paint mine. Maybe not. What do you
|
|
care?
|
|
|
|
The Tower
|
|
A case for those of us who spend extra for a Turbo engine in our car.
|
|
Sleek, elegant, and powerful looking. It stands vertical instead of
|
|
horizontal. The Power Supply is usually bundled with the case. You can
|
|
achieve the same effect (mostly) by buying a $6 stand at a show. There
|
|
are two types of Tower cases; those that have to be taken apart like a
|
|
standard case (i.e. 6 screws in the back) and those with a removable
|
|
side panel that allows access to all peripherals with the turning of two
|
|
large screws. This panel makes the IBM PS2 80 a dream to work on.
|
|
|
|
The Baby Tower
|
|
This article just keeps getting longer. The new entry in the field is
|
|
pretty reasonable priced. I picked mine up with power supply at the last
|
|
show for $129.
|
|
|
|
Expect to pay $25-80 for the case, over $150 for a tower case with Power
|
|
Supply. Buy with confidence from a computer show or catalog. Hard to
|
|
mess this one up. Look for panel lights, a keylock, and a flip top
|
|
(wish I had one!). You are inside this babe 30-40 times while building,
|
|
tweaking and adjusting, and a flip top will make your life easy.
|
|
|
|
The PC HELP pick: The Baby AT Tower with removable side.
|
|
|
|
Installation
|
|
|
|
Install the small speaker and LED's (light emitting diodes) and lock, if
|
|
any, on the case. The speaker may get annoying. It is loud. Radio
|
|
Shack can help you install a little switch to turn it off and a
|
|
headphone jack for private listening of the annoying beeps. (This is
|
|
where I used the soldering gun). You need to mount these so that the
|
|
wires don't pull out when you remove the case!
|
|
|
|
The Motherboard
|
|
|
|
Now you have a real decision to make- once you make it, you have decided
|
|
on the basic Architecture of the Machine and there is no turning back.
|
|
You now need to decide whether to buy a 8088, 80286, Baby 80286, 80386,
|
|
80386sx or i486 Motherboard. Many Manufacturers. Buy whichever one you
|
|
choose with the highest Mhz rating you can afford. Mine is 12 Mhz.
|
|
|
|
Saving a few dollars by buying an XT board will limit you to a non-
|
|
reusable keyboard (unless it is switchable) and hard disk controller, a
|
|
hard to replace BIOS, and no Windows 3.0 or other newer software.
|
|
|
|
INVEST in the Motherboard. Spend the extra $20-50 to get the best you
|
|
can afford. Skimp on the replaceable.
|
|
|
|
The 8088 (XT) Board
|
|
Somewhat slow but can be made faster depending on options and speed up
|
|
boards. 8 bit technology. For The Person Who Has Lots Of Time To Wait
|
|
for Spreadsheets To Recalculate. The technology will soon be as passe
|
|
as Leaded Gasoline. Not recommended unless Price is the only
|
|
consideration. Analogous to buying an Atari 2600 (lots of cheap
|
|
programs around!) rather than a Nintendo or a Turbo-Grafix 16 bit game
|
|
system. Why buy something that will be expensive to speed up? Operates
|
|
at 4.77 Mhz, with most Motherboards now being "Turbo" (8 Mhz). Most DOS
|
|
based resources are downward compatible, though, and you certainly can
|
|
build an XT for a truly economy minded system.
|
|
|
|
Consider this: The 8088 Motherboard can be had for less than $80. IF you
|
|
go this route, you need to know if it can support high density floppy
|
|
drives. If it doesn't, you will be limited to low density floppies.
|
|
Upgrading an older BIOS XT to run these drives and to support VGA
|
|
Monitors will cost you $49 from the Catalog. Plus $10 shipping,
|
|
handling, postage, etc. $80 + $49 = $129. Cost of a 286 Motherboard:
|
|
$95-$119. You may be getting the impression by now that I am trying to
|
|
talk you out of an 8088. You got it.
|
|
|
|
The 80286 Motherboard
|
|
The easiest to get cheaper, new technology pieces for. The current
|
|
de-facto standard. 16 bit. Fast. Accepts many 8 bit (XT type)
|
|
peripherals until you can afford rocket fuel. 8-20 Mhz. Buy as high as
|
|
you want to fly. The lowest you should go.
|
|
|
|
The 386DX and 386SX
|
|
For those of us who just have to know the last digit of Pi before
|
|
dinner. (Pi should be saved for after dinner. Sorry). Very, very fast.
|
|
Will be the standard for the early nineties. A forward thinking choice.
|
|
If price is less of an issue, the way to go- the price is coming down
|
|
every day.
|
|
|
|
Many people I have spoken to advise against the 386SX as being a step
|
|
backward, and that a fast 286 will beat up a stock 386SX. The other side
|
|
of the debate is that the SX has the technology on-board to keep it from
|
|
becoming passe when developers bypass 286 technology. It gets down to
|
|
speed versus being able to use tomorrow's technology. As my mentor Ken
|
|
says, "speed ain't everything." You make the call. If this machine is
|
|
going to be useful when DOS goes bye-bye, 386SX will keep you in the
|
|
race at a price currently quite a bit lower than 386. When I build again
|
|
next year, it will be 386. It's getting to the point that its hard to
|
|
not recommend building a 386 instead of a 286. Motherboards for the 386
|
|
are currently show priced at $399. This may be below $300 in a year.
|
|
This is good. The more people make the jump, the lower the price will
|
|
be. We're out of order here, but let's finish the discussion on the main
|
|
processor. The i486 is just starting to show up as a separate
|
|
motherboard. I really don't see any reason to make this plunge if you
|
|
are building to save money, unless you need it to run your power plant
|
|
or pacemaker or something.
|
|
|
|
The i486
|
|
Just coming on the market in large quantities. I don't have enough
|
|
experience with them to say whether the speed is noticeable over the
|
|
386DX.
|
|
|
|
The PC HELP pick: AmpTron 286 with 0/1 wait state, 256/1 Meg sockets, on
|
|
board Set up in BIOS. Other Manufacturers with a good reputation
|
|
include Morse and Everex. Pay $95-250 based on features. Buy from the
|
|
Catalog. The latest system I helped build had made enormous strides over
|
|
just six months ago. Expanded Memory (instead of extended) was supported
|
|
right from the Motherboard. Another 4 Megabytes of Memory was supported.
|
|
Memory caching was built in. All for the same money.
|
|
|
|
Time out: A word about the BIOS
|
|
For whatever board you buy, you must be aware that next to the actual
|
|
processor, the most important consideration is the BIOS, so it deserves
|
|
it's own blurb.
|
|
|
|
The BIOS (Basic In-Out system [ooh baby])
|
|
|
|
Three chips, two for the machine and one for the keyboard. Look for BIOS
|
|
built in ($50-100 to add, AND there very well may be compatibility
|
|
problems mixing and matching), the word NEW in the Ad (you don't want
|
|
something made in 1986; the BIOS needs to be able to work with the new
|
|
small Disk Drives). A good question to ask: Does the BIOS read High
|
|
Density 3 1/2 inch Disks? If you don't want a high density disk now,
|
|
you will soon. Will it take 1 Meg RAM chips? (Cheaper and leaves room
|
|
for expansion vs. 256K Ram Chips)? Some take SIMMS or SIPPS modules,
|
|
which hook 9 chips together; that's OK. Again, this question will help
|
|
you get a board that is fairly new. How many expansion slots? Some
|
|
Tandys (Radio Shack) for example only use Tandy Expansion Boards (the EX
|
|
and HX). No fun. OK machine, but you are left out of great deals on
|
|
boards and peripherals. What is the date of the BIOS? The "main
|
|
instructions" to the CPU are handled in these (usually two) chips.
|
|
Award, AMI and Phoenix all make BIOS chips, and they upgrade them
|
|
constantly. Mr. Mail Order is all too happy to unload a Motherboard with
|
|
an old BIOS to Mr./Ms. NewBuilder. I'm not an expert on BIOS chips, but
|
|
will pass along that American Megatrends (AMI) is my BIOS of choice, and
|
|
produces (or has produced for them? I don't know which) special BIOS
|
|
made in cooperation with Chips and Technology (C&T) that come in two
|
|
flavors- EC&T which has extended BIOS settings for the true nerd and
|
|
DC&T with diagnostics routines built right in. Just don't try to get
|
|
tech support from C&T. A VERY good reason for getting new BIOS
|
|
(currently April, 1990) is that they (AMI) have a SETTABLE hard drive
|
|
table!!! Don't like the choices? Pick your own poison. If you don't know
|
|
what I'm talking about, you probably won't lose any sleep over the
|
|
difference.
|
|
|
|
Micro Channel Architecture (MCA)
|
|
And now a word from Big Blue. IBM wants yer money. They came out with
|
|
Micro Channel for two reasons: 10% to improve the computer, and 90% to
|
|
destroy YOUR ability to build your computer with inexpensive, readily
|
|
available parts. Ignore it, and maybe it will go away. Makes every card
|
|
you bought Useless (notice the capital U) by changing the socket that
|
|
fits into the motherboard. Boo Big Blue.
|
|
|
|
Installation:
|
|
Fits into the case with screws and set-offs. Very easy to assemble.
|
|
Many Motherboards come with instructions. Mine didn't. If not, take out
|
|
of a library or buy a book, such as How to Build an IBM Compatible and
|
|
Save a Bundle by Aubrey Pilgrim. Handle this Baby with CARE (the
|
|
motherboard, not the book.) LEAVE it in the plastic wrap till you are
|
|
ready to install. Put the little white plastic set-offs on the board
|
|
first. Touch the Metal Case before touching the Board. Practice
|
|
inserting the Motherboard twice before actually putting it in. Visualize
|
|
how it is going to slide in. Don't mess it up here!
|
|
|
|
Plug the Speaker leads and the Power/Turbo LED's on the Motherboard as
|
|
indicated. If they don't work when you fire it up, reverse them. Set
|
|
the jumpers per the instructions. Pick 0 wait state if your chips are
|
|
LESS than 100 Nanoseconds (you'll read about them later). Read slowly
|
|
and carefully. It all makes sense. No, you probably don't need a Math
|
|
Co-Processor- unless you are related to Albert Einstein.
|
|
|
|
Power Supply
|
|
For an XT, somewhere around 150 watts is sufficient. An AT, you should
|
|
spend an extra $20 to go to 200-250 Watts. The higher the wattage, the
|
|
more junk you'll be able to stuff inside. For a Baby AT, buy an XT
|
|
Power Supply with a high rating (200 Watts). A 386 may need more
|
|
wattage.
|
|
|
|
My choice: A 200 watt XT Supply (fits a BABY AT). I chewed up two 130
|
|
Watt Supplies. Buy from a Catalog or Discount Store. Power Supplies are
|
|
the most often repaired item. Don't buy it used. They go up. Pay
|
|
$35-55.
|
|
|
|
Installation
|
|
Slips into the case via two slots at the front of the supply, then
|
|
screws to the Case. Has two plug-ins to the Motherboard. Make sure the
|
|
black wires are next to each other when you plug them in. Has 5 or more
|
|
plugs to go to Drives and such. The little one goes to the 3 1/2 inch
|
|
drive. Except for that one and the ones for the motherboard itself, they
|
|
are all the same. Make sure it comes with a Power Cord! If not, it's
|
|
a cheap item ($3 at a show).
|
|
|
|
You will be tempted to check your installation and turn it on for a
|
|
second. If you do, you will hear a series of annoying beeps as the
|
|
Motherboard comes to life, finds no Monitor, Controller, Drive or
|
|
Keyboard and promptly bails out. You should hear a gentle whirr from the
|
|
Power Supply. If you see sparks or smell ozone, shut it down (quick!)
|
|
and start over.
|
|
|
|
The Keyboard
|
|
May be bought refurbished from a store. You MUST buy an Enhanced
|
|
keyboard for a 286 or higher. Old XT's used a different processor, even
|
|
though the connector still fits! The enhanced has some neat extra keys,
|
|
extra Ctrl and Alt Keys, and F11 and F12. Some keyboards are switchable
|
|
from XT to AT. Pay $20 (used) to $100 (fancy extras). Look for a nice
|
|
click when you press the keys, LED's for NumLock, Caps Lock and Scroll
|
|
Lock.
|
|
|
|
Installation:
|
|
Has a round plug. Plugs into the back of the case. IBM has a little
|
|
round plug on their PS2's, so make sure it's AT compatible.
|
|
|
|
The Monitor
|
|
Ok, now we come to some pure decision making. To keep the as built cost
|
|
down, consider giving up color. Just for now. Trust me. If you want
|
|
to really plan for the future, though, and want to add $300 that will
|
|
make you happy in the long run, go for the gold and add a multi-sync or
|
|
multiscan Monitor. Top of the Line. Cream of the Crop. Will run
|
|
anything from Mono to VGA, and most probably, anything coming down the
|
|
pike for 5 years. I advise AGAINST anything in between. If you buy
|
|
something between Mono and Multi, you will have to throw away or trade
|
|
for next to nothing to upgrade.
|
|
|
|
The choices are:
|
|
|
|
Mono:
|
|
Monographics Monitor. Green, white or amber on a black background.
|
|
Does graphics, though! It's hard to beat a Leading Edge Amber Monitor
|
|
at $69, available at General Computer. Don't try to use a TV, even if
|
|
it calls itself a "Monitor". A TV only does 40 columns across
|
|
(characters) and you need 80.
|
|
|
|
CGA
|
|
Color Graphics. Also called RGB for Red, Green and Blue. Shows 4
|
|
colors (figure THAT math out!). Tandy CGA shows 16. Nice, but a
|
|
$200-400 investment that is going passe. Many graphics programs demand
|
|
EGA.
|
|
|
|
EGA
|
|
Enhanced Graphics. 16 colors at one time. Was the high end standard a
|
|
few years ago. Go higher or Mono.
|
|
|
|
VGA
|
|
Video Graphics Array. Puts a picture of your Mother on the screen. In
|
|
blushing color. This is where you want to be eventually. "Real" VGA is
|
|
.31 dot pitch or LESS. VGA comes in two flavors: analog and digital. In
|
|
most electronic and audio applications, digital is better than analog.
|
|
In VGA, it's the reverse. Analog is better. You need EGA or VGA to
|
|
fully run programs like Freelance Plus (Lotus). You are almost there.
|
|
Only problem here is, what happens when VGA is supplanted next year?
|
|
Read on.
|
|
|
|
Super VGA
|
|
Super VGA is enhanced VGA. Has to do with the number of lines of
|
|
resolution on the screen. A monitor whose resolution is 800x600 is
|
|
considered Super VGA.
|
|
|
|
Multisync
|
|
You have arrived. Will run anything. Works anything. $300 for a
|
|
perfectly good AOC or Morse to $700 (discount) for a NEC Multisync 3D
|
|
and up. Check the Catalog. You can find familiar names like Sony and
|
|
Toshiba here. CGA runs at a certain frequency, as does EGA and VGA.
|
|
Hence, multiple synchronization.
|
|
|
|
So Mono now, Multisync and VGA later. Read on for the exception.
|
|
|
|
A Word on VGA
|
|
VGA cards are crashing in price. Couple that with the fact that you can
|
|
get a "paper white" VGA Monitor (black and white) for $89. Hmmmm...check
|
|
it out at the Show before you go Mono. May be irresistible.
|
|
|
|
The PC HELP pick: The Monochrome VGA Monitor for starters.
|
|
|
|
Installation: Plug the Monitor AC cord into an outlet, or some plug
|
|
directly into the Power Supply of the Computer from the back of the
|
|
Machine. Plug the Monitor Cable into the Video Board (next).
|
|
|
|
The Monitor (video) Board
|
|
For whatever monitor you buy, you have to plug a board into the computer
|
|
to run it. A used Mono board can be had for $20 everywhere. All those
|
|
boards that came out of old PC's and XT's and all the Manufacturer
|
|
over-runs are sitting around waiting for you. So you can have up and
|
|
running video for $89 or so.
|
|
|
|
MONO (non-VGA)
|
|
Look for: A Hercules compatible card. This board `interprets' graphics.
|
|
With a simple program such as SIMCGA available on bulletin boards or
|
|
from clubs, will run most CGA Graphics programs. A bit of a pain. Also
|
|
look for a parallel or serial port built in. Saves another $10-60.
|
|
Hercules is interesting; a program written for hercules has graphics
|
|
better than CGA, EGA and many VGA versions. The graphics are tight and
|
|
crisp. Centerfold Squares (Artworks, Inc. My favorite sexist software)
|
|
looks better in herc than in Super VGA! But finding herc programs is
|
|
getting more harder all the time, and you are still talking black and
|
|
white.
|
|
|
|
COLOR (and Mono VGA)
|
|
CGA, EGA and VGA cards plug in the same way. May need software
|
|
(provided) to run, and EGA and VGA may have memory slots. Some VGA cards
|
|
are downward compatible; that is, you can run Mono, CGA, EGA or VGA with
|
|
them. These boards fluctuate WILDLY in price. Stores may ask $200 for
|
|
a CGA card, $300 for EGA, $400 for VGA- yet at a recent computer show,
|
|
a full function VGA card was being sold for $69. That is why VGA is the
|
|
way to go. You must not plug a VGA monitor into a CGA board or something
|
|
like that. Make sure your card and monitor are compatible.
|
|
|
|
There is no need to buy an 8 bit VGA card if you are building an XT.
|
|
Simply place a piece of electrical tape over the second connector, and
|
|
use the 16 bit card as an 8 bit until you get a 286/386 motherboard.
|
|
There may be 16 bit VGA cards that don't work this way, but I haven't
|
|
found one.
|
|
|
|
VGA cards are rated by memory; a 256K board is less powerful and slower
|
|
to refresh the screen than a 512K board. 256K is certainly adequate for
|
|
a starter. I have recently upgraded to 512K, and I don't see much
|
|
difference.
|
|
|
|
Installation:
|
|
Plug the board into an expansion slot, advisably the farthest left.
|
|
Plug the Monitor cable into the small receptacle on the back of the
|
|
card. Use care here. Trying to plug in a VGA Analog connector into the
|
|
board blind is the leading cause of Monitor trouble: it fits just enough
|
|
to push a pin or two back up into the plug. If you are having trouble
|
|
with your monitor, inspect the connector VERY carefully. Gently pull any
|
|
pushed in pins back out (With the Monitor OFF), taking care not to
|
|
deform the pin. Some Monitors get their power from a plug that goes
|
|
directly to the Power Supply.
|
|
|
|
The Memory
|
|
THE place you will have to do some digging. Think of Memory as a
|
|
commodity- the price fluctuates day to day, and when you ask for a
|
|
price, the dealer will likely pick up the phone and call some Chip
|
|
broker for the latest quote. Seriously! This is due to 1988's chip
|
|
shortage. Prices have come way down, but, like gold, some dealers kept
|
|
the highest price. PLEASE buy from a Catalog or a Show. Compare
|
|
prices. Be patient. A national software chain sells 256K chips for
|
|
$19.99. Pay $2 at a show.
|
|
|
|
Chips come in 64K, 256K and 1 Meg sizes, plus new "banks" of chips in
|
|
new motherboards called SIPPS and SIMMS. You may be able to use SIMMS,
|
|
but the price may be prohibitive for a while yet. Your Motherboard came
|
|
populated (with chips) or at 0K (most likely). There will be a bank of
|
|
4, 6 or 8 rows of empty chip sockets. A Memory chip looks like a small
|
|
after dinner mint with teeth. Your Motherboard documentation (however
|
|
little they provide) will tell you that it takes one or more of these
|
|
size chips. Use the highest you can. It takes 9 256K chips to make
|
|
256k of memory (or 9 1 Meg ships to make 1 Meg). The ninth chip is for
|
|
parity checking and other good stuff.
|
|
|
|
Motherboards require you to fill two banks (rows) of sockets with chips
|
|
to work. You will have to use 18 256K chips to make 512K of Memory. If
|
|
you can use 1 meg chips, fill the same two banks with 18 chips and you
|
|
have 2056K of Memory!...and you still have empty rows you can fill
|
|
later. 1 Meg is the way to go. Buy from a Computer Show or a Catalog.
|
|
If you call a dealer, he probably bought from a catalog, and will add
|
|
lots of dollars to that price. Pay $2-5 each for 256K, pay $5 to $8 for
|
|
1 Meg. Some dealers sell "Pulls", i.e. chips they have pulled from other
|
|
machines. You make this call: you are taking a chance. Don't pay more
|
|
than half of a new chip's cost.
|
|
|
|
Speed
|
|
Chips vary in speed. The LOWER the number, the faster the chip. Usual
|
|
values are 70 Nanoseconds, 80 Nanoseconds, 100 Nanoseconds and 120
|
|
Nanoseconds. Believe it or not, many vendors charge the same price,
|
|
what ever the speed. You can usually have one bank of 80 and one bank
|
|
of 100 or 120, but cant mix them in the same row. Lower number chips may
|
|
be TOO fast for your machine. That is why new boards are 0/1 wait state
|
|
switchable. If the chips are running too fast, you switch back to 1, a
|
|
longer wait state. Read up on it.
|
|
|
|
How much Memory? Anything less than 512K (two banks of 256K chips) is
|
|
impractical if you are even going to run a good game or a spreadsheet.
|
|
640K- 1 Meg is the most "conventional" Memory DOS can address, and
|
|
anything above that is used for a RAM Disk (making your computer pretend
|
|
it has an extra disk drive), Print Spoolers (sends printing jobs ahead
|
|
and reducing your wait), disk caching and new stuff every day. Windows
|
|
3.0 uses as much memory as you can throw at it, and uses it well. 1024K
|
|
is usually plenty to start, makes 640K Conventional and 384K extended
|
|
(not Expanded) Memory available, but with 1 meg chips, you have to fill
|
|
2 banks, so you get 640K Conventional Memory and the rest Extended
|
|
Memory. As more programs add uses for so called above board Memory,
|
|
there will be more uses for it. Expanded Memory (also called LIM for
|
|
Lotus, Intel, Microsoft, the consortium that approved it) is somewhat
|
|
more useful, "paging" in and out in 64K chunks to imitate regular
|
|
Memory, usable in Lotus 123 and Microsoft Windows and more programs
|
|
every day. Your Motherboard documentation will tell you whether you have
|
|
Extended or Expanded Memory on board. Some motherboards say "expanded"
|
|
and it really is extended. If it is expanded, it comes with a driver to
|
|
page in and out in 64k chunks. It uses the same chips. A few of the
|
|
newer 386's use Static RAM chips. Some static RAM chips cost $40 APIECE,
|
|
and you can't get them even if you have the bucks. Read before you buy.
|
|
|
|
386 Clone Motherboards use Extended memory for the most part, and you
|
|
turn it into expanded as needed by using an Expanded Memory Emulator,
|
|
such as QEMM.
|
|
|
|
If you have never installed chips before, take apart something old, like
|
|
a radio or answering machine that no longer works (every house in
|
|
America has a broken answering machine, I think). Make sure it is
|
|
unplugged (of course) and find an IC chip (described above) (one that's
|
|
in a socket, not soldered in) and insert a small screwdriver under the
|
|
chip as far as it will go without force. Pull up gently. Stop. Slip the
|
|
screwdriver a little further in. Pull up gently. Stop. Insert the
|
|
screwdriver under the other end. Pull up gently. That should do it. If
|
|
you can't pull it out, there are IC extractors available very cheap (and
|
|
very expensive. I had to buy a $60 one for special job) at electronics
|
|
stores. Repeat until the chip comes out. Removing chips is a developed
|
|
art. I still break them, and the genius manufacturers couldn't be
|
|
bothered to key the chips to only go in one way. Put it back in. Repeat
|
|
this a number of times.
|
|
Go ahead and, with help if needed, install the chips and set the
|
|
Motherboard. When you go to install the chips, they are usually put in
|
|
with the notch facing the power supply. You usually have to bend the
|
|
pins on new chips SLIGHTLY inward. Use something with a flat edge like
|
|
a plastic ruler and bend them gently, gently all at once. Make sure they
|
|
go in straight and all pins go in. The notch on the chip is usually
|
|
matched to a notch on the socket. Get help here if unsure!!! Install the
|
|
first chip in a socket that is easy to define, and the others will line
|
|
up. Inspect each chip with a flashlight when the chip is in but not
|
|
pushed down all the way. Make sure that all pins are inside the sockets,
|
|
or start over. When you are comfortable, push down firmly, but not hard
|
|
enough to bend the motherboard. Touch something Metal before handling
|
|
the chips. Static electricity can make them instant idiots, erasing
|
|
everything they learned at the factory. The sockets may be designed to
|
|
accept both 256K and 1 Meg chips. COUNT THE PINS and match up the number
|
|
of pins on the chips and in the socket. It is incredibly easy to put the
|
|
chip in the wrong size socket. There will be a dipswitch on the
|
|
Motherboard that you will set to tell it how much Memory you are
|
|
installing, and what kind of monitor you have. The documentation will
|
|
explain the switch.
|
|
|
|
Remember, 9 chips in a row for every unit value of Memory (and I said no
|
|
Math..oh well). 9 256K chips makes 256K of Memory.
|
|
|
|
Disk and Hard Drives (I/O devices)
|
|
Before you can load a program or save a file, you need to put it
|
|
someplace semipermanent. This is because when you exit a program or
|
|
turn the computer off, everything disappears! Lost forever. Gone. You
|
|
need a device or devices to save to a floppy or hard disk. For budget
|
|
purposes, buy a new or used standard 5 1/4 inch floppy disk drive. Try
|
|
to buy a half height drive, which only takes half the slot in the case,
|
|
so that you can add a second 3 1/2 drive later. The disks are cheap and
|
|
will store 360K of information (1K is about 1 page of printed text).
|
|
2/3rds of programs you buy will be on 5 1/4 disks. Pay $20-40 used,
|
|
$30-60 new. 3 1/2 drives make your life easy. If you can afford it, buy
|
|
a 3 1/2 at the same time you buy the 5 1/4. The 5 1/4 is recommended
|
|
because most programs you buy come with these disks as the default, and
|
|
if you have to boot from this disk (in many games), you need this size
|
|
drive and you need it to be "A".
|
|
|
|
NOTE: If you ever have to call the B drive A for a program, go to a DOS
|
|
disk or subdirectory and type ASSIGN a=b,b=a. That will temporarily
|
|
reverse the drive assignments. To get back, go back to DOS and type
|
|
ASSIGN by itself.
|
|
|
|
Installation. You need a board. Read the rest of this article before
|
|
deciding.
|
|
|
|
You need a hard/floppy or floppy controller. You need it to be MFM or
|
|
RLL if you will soon buy a Hard Drive. There are other exotic hard drive
|
|
types explained later, but, dollar for dollar, MFM still seems to be the
|
|
best value, and most compatible. If you are building an AT (286), you
|
|
will want 16 bit (two card edges on the bottom) if you want a Hard
|
|
Drive.
|
|
|
|
The Controller
|
|
For floppy disks only: you can get a half-card floppy controller cheap.
|
|
Plug it into an 8 bit slot near the power supply. You need a cable to
|
|
go from the controller to the back of the drive. The plug will be marked
|
|
1 on one end and 36 on the other. 1 usually goes on top. There should
|
|
also be a different color wire on one end of the "strap" of wires. This
|
|
color designates wire one. If the disk drive lights and doesn't go out
|
|
when you fire up, you have it backwards. The other end of the cable
|
|
should have two card edge connectors, marked with numbers as described
|
|
above. There is also usually a slot in the female portion keeping you
|
|
from putting it on backwards. One card edge connector may have a twist
|
|
in the cable near the connection. This and the fact that it is the end
|
|
of the cable indicates the Drive A connector. Plug it into the back of
|
|
the drive, which you have slid into the slot in the case. Plug one plug
|
|
from the power supply into the drive. If you have bought a second
|
|
drive, the other card edge connector hooks to that drive to make it
|
|
drive B. You MUST follow the manual for the drive or call the
|
|
Manufacturer to set the little jumpers on the drive near the back to get
|
|
the drive configured correctly. To me, this is the most frustrating part
|
|
of putting a system together. Most manufacturers use jumpers which are
|
|
tiny black sockets that connect two pins together. They are near
|
|
impossible to remove with or without tweezers, and sometimes you end up
|
|
having to move these jumpers 10 times or more to get the configuration
|
|
right. Hey manufacturers, use dipswitches! With a twisted floppy control
|
|
cable, set both drives to the second position, which may be DS1 or DS2,
|
|
depending on whether the manufacturer starts counting at 0 or 1. In any
|
|
event, it's the second drive position.
|
|
|
|
For hard drives, you need a separate controller, or a Hard/Floppy drive
|
|
combination controller. In most cases, you will be using the latter.
|
|
Follow the documentation.
|
|
|
|
Types of Floppy Drives
|
|
Besides the old standby 360K 5 1/4, there is a high density 5 1/4 that
|
|
stores 1.2M of data. This drive is problematical. You will not be able
|
|
to write to a low density diskette and use it on another computer with
|
|
a low density drive. There are also 3 1/2 inch drives. The disks it
|
|
uses are hard, less likely to go bad, and fit in your shirt pocket
|
|
without a sleeve. Wonderful. Buy one as a second drive. Stores 720K.
|
|
High density 3 1/2 drives store 1.44M, and aren't as problematical as
|
|
high density 5 1/4's and surprisingly, are only about $10 more than low
|
|
density! Buy the high Density. Pay $30 (used) to $75. Installation
|
|
note: I had my 3 1/2 high density drive set to Read Media, which meant
|
|
that the drive decided which type of disk was in the drive. A friend
|
|
gave me a program on a high density diskette. The machine wouldn't read
|
|
it. To make a long story short, she had formatted the high density
|
|
diskette to low density, and the drive to trying to read high. I
|
|
changed the jumper to read the disk type from the machine instead of the
|
|
Toshiba drive. Problem solved. If your BIOS routine sets disk types in
|
|
the Setup program, do it this way.
|
|
|
|
ANOTHER NOTE: This will pay for reading this article many times over. If
|
|
your BIOS is set in the set up routine to read high density diskettes,
|
|
and the drive is high density, setting the jumpers right on most models
|
|
will let low density diskettes format to high density! There. I've just
|
|
saved you $3 a diskette for the rest of your life. Send $10 to
|
|
Greenpeace.
|
|
|
|
Caution: Some computer manuals claim that you should never do this. They
|
|
say that the low density disks are not made to be formatted high, and
|
|
you will lose data. I have NEVER had this happen, so you make the call.
|
|
If the only copy of your will is on a low density disk formatted to
|
|
high, back it up somewhere. Personally, I could write my will on the
|
|
label of a 3 1/2.
|
|
|
|
Hard Disks
|
|
Ok, ready for some jargon? There are MFM drives (usually old) RLL, SCSI
|
|
(pronounced scuzzy for some warped reason), IDE and ESCI drives. Buy
|
|
whatever you get the best deal on, and fills your purposes (if you can
|
|
afford ESCI, you probably aren't interested in building) but your
|
|
controller MUST be compatible with that type. buy a 16 Bit controller
|
|
card. You can get 10,20,30,40,80 and up Megabytes of memory. Read up on
|
|
it. 30M is about the best compromise for the limited-income builder.
|
|
Buy a compatible Hard/Floppy controller (MFM or RLL [higher capacity by
|
|
increasing the sectors]) to match the drive and 8 bit for XT or 16 bit
|
|
for AT) to control all the drives. Buy a half height if possible to
|
|
save room for a second hard drive. I installed a 10 meg full height
|
|
(great buy!) and filled it in two days. Word Perfect took 2M. Symphony
|
|
took 1.5M. Windows 3.0 needs 3-6 million and is worth every byte. And
|
|
on and on. Pay $50 (used) to $600 for a hard drive. Pay about $225 for
|
|
a 20 Meg. Get a book on formatting. Get the shareware programs IAU and
|
|
HDDIAG from a bulletin board or a Computer Show. Ready for a crap shoot?
|
|
Show up at a show AT OPENING TIME. Someone will invariably be there
|
|
selling hard drives pulled from old machines for $1 a megabyte. For
|
|
thirty dollars you can take home a 30M drive that has a 50-50 chance of
|
|
working. Like I say, you make the call. I bought a 42MB voice coil (as
|
|
opposed to stepper motor) drive for $40; it only needed re-formatting.
|
|
Then again, chances were just as good that this drive was used as an
|
|
anchor for a crab pot for six months. Again, it's a crap shoot.
|
|
|
|
Hard drives come in full size, half size (both 5 1/4) and 3 1/2 size. BE
|
|
SURE that the case you buy will take a full size hard drive and two
|
|
floppies before you buy a full size drive.
|
|
|
|
Drives are also split into Stepper Motor and Voice Coil. Be aware the
|
|
stepper motor will give you great service, but cannot be moved without
|
|
"parking" the drive. A stepper motor hard drive is just like a
|
|
turntable; if you shake the drive, the needle will go skittering across
|
|
the surface of the drive platter, destroying data as it goes. Most hard
|
|
drive repairs are reformatting as a result of the user banging the
|
|
machine around, or, (GASP!) turning the machine over and shaking it to
|
|
get out a loose screw. Voice Coils can be safely moved, and are more
|
|
expensive. Ask the seller which the drive is.
|
|
|
|
High Tech Hard Drives
|
|
SCSI works by putting the controller on the Hard Drive, and the floppies
|
|
work off of that controller. IDE is an animal unto itself. IDE also puts
|
|
the controller on the drive, and then plugs into a card (not a
|
|
controller?) that also has the parallel, serial, game port and floppy
|
|
controller on the same card. I just installed one in my system. I can
|
|
see NO speed improvement over my Adaptec MFM controller.
|
|
|
|
Installation
|
|
There is a big cable that goes from the Hard Drive to the controller and
|
|
a small one. Match pin one to pin one all the way around. Slide the
|
|
Hard Drive into the case, connect these cables, and plug in the power
|
|
supply lead. For two drives, get a book and follow the instructions.
|
|
It's not that hard, but you have to deal with twisted cables and
|
|
terminating resistors and such. The terminating resistor goes on the
|
|
last physical device.
|
|
|
|
The hard drive must be set up in your BIOS program, then low-level
|
|
formatted and high level formatted. Pick up a book at the library,
|
|
borrow one or ask a friend. The procedure is not difficult. The two
|
|
aforementioned share-ware programs IAU and HDDIAG makes the process easy
|
|
and configures the drive to it's optimum performance.
|
|
|
|
In 286 and 386 machines, you must pick an entry from your Set-up
|
|
program, which comes up when you start the computer. It is accessed by
|
|
a particular keystroke, referenced on the screen before the machine
|
|
actually boots DOS. The message will say something like "Press DELETE to
|
|
enter Set-up". Set-up writes your component information into the CMOS.
|
|
CMOS stands for something or other which I always forget.
|
|
|
|
Shareware programs are available to help you pin down which "number" of
|
|
a standard set of numbers your hard drive type is. An old IBM 10 meg
|
|
drive is #1. An old Seagate 412 is #23. The BIOS will ask you for this
|
|
number. If you bought from Crazy Johns Unguaranteed Hard Disk Bargain
|
|
Nearly New Shop, you may have to do some digging to find the number.
|
|
Disk Manager, which comes with Seagate Hard Drives, will interrogate the
|
|
drive for you, but is a real pain in the butt when the drive isn't
|
|
Seagate. Here's a real kluge. My hard drive didn't fit my table, so I
|
|
hooked the hard drive up to a machine with a settable drive table,
|
|
formatted it, then saved the settings to the disk with Disk Manager. If
|
|
the drive ever crashes, I'll probably have to repeat this process or
|
|
update my BIOS. You need to know the number of cylinders and number of
|
|
heads, at a minimum. The number of sectors for MFM is usually 17
|
|
sectors, RLL 26 or 27. Call the local computer club to track down a list
|
|
of hard drive specs. You match the number of cylinders and number of
|
|
heads in the drive table in your set-up program WITHOUT GOING OVER. Just
|
|
like the Price is Right (hi Bert!). If your drive has 8 heads, you can
|
|
pick 5,6,7 or 8, but not 9.
|
|
|
|
Skip this paragraph unless you end up with an IDE drive. I just learned,
|
|
by force, how to set up one of these bears. The IDE drive table entry is
|
|
determined by MULTIPLYING the number of heads x the number of sectors x
|
|
the number of cylinders, and matching that to the drive table entry that
|
|
most closely equals the number of heads x cylinders x sectors. Sheesh.
|
|
The advantage is, you are not limited to the closest without going over
|
|
rule. The one thing you MUST NOT DO is low level format an IDE drive!!!
|
|
They are low level formatted at the factory. If you do a low level
|
|
format, it becomes an MFM drive. This exciting information was passed on
|
|
to be by the Seagate technical department AFTER I had low level
|
|
formatted three times trying to ge the bear to work. There was NOTHING
|
|
in my documentation telling me not to do a low-level. I had to get
|
|
another drive and start over to get the full performance from the drive.
|
|
|
|
|
|
FORMATTING
|
|
Formatting the hard disk is involved but not difficult. HDDIAG and
|
|
AMIDIAG (AMI, the BIOS people) are both free or shareware programs
|
|
available at Computer Shows and through magazines for a couple of bucks
|
|
each (Registration will cost more. These folks deserve their money.)
|
|
They will walk you through the low level formatting, which prepares the
|
|
disk for your system. Seagate and some other manufacturers come bundled
|
|
with Disk Manager, which is a great utility, but only works with that
|
|
brand hard drive. Next you run your DOS program FDISK, in which you set
|
|
up the DOS partition. If you are running DOS 3.3 or less (hardly anyone
|
|
likes DOS 4.01) you are limited to 32 Megabytes per partition. Thus, a
|
|
40 Meg harddrive must be split up into more than one partition (C and D
|
|
[and maybe E]). A drive runs faster if you minimize the C partition and
|
|
maximize the others. The D and above partitions run much faster. No big
|
|
deal to run FDISK. Finally, you high level format the disk, i.e. format
|
|
C:/s which makes the hard disk ready for use and bootable and format d:
|
|
which prepares the D drive. Take this whole process slow and easy. Block
|
|
out quiet time to do it.
|
|
|
|
PORTS
|
|
You may not be ready for this yet, but here goes. There are Ports for
|
|
adding peripherals to your machine, just like you add a CD or turntable
|
|
to your stereo. A mouse usually needs a serial port or works off of it's
|
|
own card, and a printer a Centronics Parallel port. The following will
|
|
NOT a full diatribe on ports, but a starting point.
|
|
|
|
PARALLEL
|
|
This one is easy. Plug the 25 pin end into an I/O card you have bought
|
|
for the computer. Plug the weird looking end into the printer. This port
|
|
is usually called LPT1.
|
|
|
|
SERIAL
|
|
Also known as RS-232. Usually a 25 pin connection. A little more
|
|
complicated, but faster and more versatile than parallel. Don't get
|
|
scared by all the technical jargon that comes with serial port devices.
|
|
I've rewired one ONCE for a special application, and I install about 400
|
|
of them a MONTH. Serial ports most often are for Mice, scanners,
|
|
plotters and external modems and such. The serial port is the place most
|
|
computer hacker wanna-bes have trouble. They represent 80% of my trouble
|
|
calls. The first and best advice is, KEEP IT SIMPLE. DON'T mess with an
|
|
IRQ that works, and NEVER, NEVER change the memory address of a COMM
|
|
port. Okay, okay, I'll back up. There are COMM ports for serial devices.
|
|
COMM 1,2,3 and 4. You use them in order as you need them. Usually the
|
|
Modem (Modular/DEModulator), which allows you to call Compuserve and
|
|
give them all your money is COMM 1 and the mouse is COMM 2. COMM 1 is,
|
|
by default IRQ4 (Interrupt ReQuest 4) and COMM 2 IRQ3. Each has a memory
|
|
address. Here's the dangerous part: you are advised, in the worst pidgin
|
|
english in the manual to mess with flipping IRQ and memory addresses and
|
|
COMM port assignments around. Please don't!!!!! Leave it alone. Keep it
|
|
simple. Messing with them is akin to switching spark plug wires in your
|
|
car. All you need to know unless you futz with them is:
|
|
|
|
LPT1: IRQ7
|
|
COMM1: IRQ4
|
|
COMM2: IRQ3
|
|
LPT2: IRQ5
|
|
|
|
COMM3 and COMM4 work off IRQ 4 and 3 respectively, but at different
|
|
Memory addresses.
|
|
|
|
|
|
Don't call me if you mess with IRQ's. It gives me a headache. If you
|
|
futz with the memory address, I won't even talk to you at the Christmas
|
|
Party.
|
|
|
|
To summarize, put in the I/O board, hook up your printer (I like the
|
|
Panasonic KXP 1124), call it LPT1, hook up your preferably internal
|
|
modem as COMM1, IRQ4 and your mouse as COMM2, IRQ3 then leave it alone.
|
|
You have been warned.
|
|
|
|
SUMMARY
|
|
You have installed the Motherboard and Power Supply, hooked up the
|
|
speaker and LED's, inserted the Memory chips, set the Motherboard
|
|
dipswtich(es), put in the Monitor Card and plugged in the Monitor,
|
|
plugged in the keyboard, inserted the Hard/Floppy Controller, slid in
|
|
and connected the drive(s), and plugged the whole shebang into the wall.
|
|
You have left the I/O card and any optional devices such as mice and
|
|
printers out of the picture until the basic machine is working well.
|
|
|
|
Now turn it on.
|
|
|
|
If everything is hooked correctly, the Memory will count off as it is
|
|
checked, and you will be sent (hopefully) to a set up program in BIOS to
|
|
describe and save the configuration of your system. You now need to add
|
|
MS-DOS from a disk to "Boot" the computer, and you are up. The moment
|
|
you see your first A> prompt you are in business. Open a bottle of
|
|
champagne, pour one for me, and accept my hearty congratulations.
|
|
|
|
|
|
|
|
|
|
|
|
MY SYSTEM
|
|
11/89 Current
|
|
Piece New or Used Source Price
|
|
=======================================================================
|
|
Case- Baby AT New Catalog $25.00 $25.00
|
|
Motherboard-AT286 Amptron New Friendly Rep $199.00 $109.00
|
|
Monitor-Leading Edge New Gen. Comp. $69.00 $69.00
|
|
Mono Card w/ parallel port Used Friendly Rep $20.00 $20.00
|
|
Power Supply 200 Watt New Disc. Store $69.00 $46.00
|
|
Teac 5 1/2 Drive Used Show $40.00 $40.00
|
|
Toshiba 3 1/2 HD Drive New Disc. Store $89.00 $79.00
|
|
IBM MFM 10 Meg Hard Drive Used Show $20.00 $20.00
|
|
Adaptec Hard/Floppy Controller Used Friendly Rep $69.00 $69.00
|
|
Memory- 18 1M 80NS Chips New Show $162.00 $108.00
|
|
Serial Port Used Show $10.00 $10.00
|
|
Modem 1200 bps (optional) Used Show $20.00 $20.00
|
|
Switch and headphone jack (opt) New Radio Shack $4.00 $4.00
|
|
========= ======
|
|
TOTAL $796.00 $619.00
|
|
THE COMPUTER SHOW SHOPPING GUIDE DJ Elliott DID I
|
|
I WANNA VENDOR GET A
|
|
COMPONENT STYLE PAY ________ ________ ________ RECEIPT?
|
|
======================================================================
|
|
THE NECESSARIES
|
|
======================================================================
|
|
CASE XT ______ ______ ______ ______ ______
|
|
AT ______ ______ ______ ______ ______
|
|
BABY AT ______ ______ ______ ______ ______
|
|
TOWER ______ ______ ______ ______ ______
|
|
|
|
MOTHERBOARD 8088 ______ ______ ______ ______ ______
|
|
80286 ______ ______ ______ ______ ______
|
|
BABY 286 ______ ______ ______ ______ ______
|
|
386SX ______ ______ ______ ______ ______
|
|
386DX ______ ______ ______ ______ ______
|
|
|
|
POWER SUP ____WATT ______ ______ ______ ______ ______
|
|
|
|
FLOPPY DR. 5 1/4 LOW ______ ______ ______ ______ ______
|
|
5 1/4 HI ______ ______ ______ ______ ______
|
|
3 1/2 LOW ______ ______ ______ ______ ______
|
|
3 1/2 HIGH ______ ______ ______ ______ ______
|
|
|
|
HARD DRIVE ___ MEG ______ ______ ______ ______ ______
|
|
___ MEG ______ ______ ______ ______ ______
|
|
___ MEG ______ ______ ______ ______ ______
|
|
|
|
DRIVE HD/FL COMBO ______ ______ ______ ______ ______
|
|
CONTROLLER MFM 8/16 BIT ______ ______ ______ ______ ______
|
|
RLL 8/16 BIT ______ ______ ______ ______ ______
|
|
OTHER 8/16 BIT ______ ______ ______ ______ ______
|
|
CABLES ______ ______ ______ ______ ______
|
|
|
|
FLOPPY 8/16 BIT ______ ______ ______ ______ ______
|
|
CABLE ______ ______ ______ ______ ______
|
|
|
|
MONITOR MONO ______ ______ ______ ______ ______
|
|
CGA ______ ______ ______ ______ ______
|
|
EGA ______ ______ ______ ______ ______
|
|
VGA ______ ______ ______ ______ ______
|
|
VGA MONO ______ ______ ______ ______ ______
|
|
MULTISCAN, MULTISYNC ______ ______ ______ ______ ______
|
|
|
|
MONITOR HERC MONO ______ ______ ______ ______ ______
|
|
CONTROLLER CGA ______ ______ ______ ______ ______
|
|
EGA 8/16 BIT ______ ______ ______ ______ ______
|
|
VGA 8/16 BIT ______ ______ ______ ______ ______
|
|
CABLE ______ ______ ______ ______ ______
|
|
|
|
MEMORY 256K CHIP ______ ______ ______ ______ ______
|
|
lower 1 MEG CHIP ______ ______ ______ ______ ______
|
|
nanoseconds OTHER CONFIG ______ ______ ______ ______ ______
|
|
better
|
|
|
|
I/O BOARD __PARALLEL ______ ______ ______ ______ ______
|
|
__SERIAL ______ ______ ______ ______ ______
|
|
__GAME ______ ______ ______ ______ ______
|
|
|
|
KEYBOARD ______ ______ ______ ______ ______
|
|
======================================================================
|
|
THE GOODIES
|
|
======================================================================
|
|
MODEM _____BPS INTE ______ ______ ______ ______ ______
|
|
_____BPS EXTE ______ ______ ______ ______ ______
|
|
_____BPS INTE ______ ______ ______ ______ ______
|
|
_____BPS EXTE ______ ______ ______ ______ ______
|
|
|
|
MOUSE BUS ______ ______ ______ ______ ______
|
|
SERIAL ______ ______ ______ ______ ______
|
|
|
|
PRINTER DAISY WHEEL ______ ______ ______ ______ ______
|
|
DOT MATRIX 9P ______ ______ ______ ______ ______
|
|
DOT MATRIX 24 ______ ______ ______ ______ ______
|
|
LASER ______ ______ ______ ______ ______
|
|
CABLE ______ ______ ______ ______ ______
|
|
|
|
FAX BOARD ______ ______ ______ ______ ______
|
|
|
|
SCANNER ______ ______ ______ ______ ______
|
|
|
|
BLANK DISKS______________ ______ ______ ______ ______ ______
|
|
|
|
SOFTWARE ______________ ______ ______ ______ ______ ______
|
|
SOFTWARE ______________ ______ ______ ______ ______ ______
|
|
SOFTWARE ______________ ______ ______ ______ ______ ______
|
|
SOFTWARE ______________ ______ ______ ______ ______ ______
|
|
SOFTWARE ______________ ______ ______ ______ ______ ______
|
|
|
|
OTHER ______________ ______ ______ ______ ______ ______
|
|
STUFF ______________ ______ ______ ______ ______ ______
|
|
|
|
Get a receipt. Get a phone number and address. Get a guarantee.
|
|
|
|
The unaltered document is 9277 words.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
X-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-X
|
|
|
|
Another file downloaded from: NIRVANAnet(tm)
|
|
|
|
& the Temple of the Screaming Electron Jeff Hunter 510-935-5845
|
|
Rat Head Ratsnatcher 510-524-3649
|
|
Burn This Flag Zardoz 408-363-9766
|
|
realitycheck Poindexter Fortran 415-567-7043
|
|
Lies Unlimited Mick Freen 415-583-4102
|
|
|
|
Specializing in conversations, obscure information, high explosives,
|
|
arcane knowledge, political extremism, diversive sexuality,
|
|
insane speculation, and wild rumours. ALL-TEXT BBS SYSTEMS.
|
|
|
|
Full access for first-time callers. We don't want to know who you are,
|
|
where you live, or what your phone number is. We are not Big Brother.
|
|
|
|
"Raw Data for Raw Nerves"
|
|
|
|
X-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-X
|