home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Shareware Grab Bag
/
Shareware Grab Bag.iso
/
019
/
attinfo.dqc
/
at&tinfo.doc
Wrap
Text File
|
1986-03-13
|
5KB
|
114 lines
AT & T 6300 PRODUCT INFORMATION
The following article contains tips on how to get the most from
your AT & T 6300. If you have a dual floppy system with 128 K
RAM, then the following information (based on my experience) can
save you significant dollars on essential add-on equipment. If
you are thinking of purchasing Lotus 123 V.2, then you can
possibly save some time and frustration.
If you are thinking of buying an AT & T 6300, then I suggest you
save money from the beginning and purchase a system with 1 floppy
drive and 128 K memory on the motherboard. You will also want to
be sure you have version 1.21 of the ROM BIOS. Read on for
details.
STEP ONE - UPGRADING TO HARD DISK DRIVE
Anyone with a PC can acquire a hard disk unit for their system.
I found a 10 Meg hard disk selling for less than $500; takes 30-
45 minutes to install; comes with utility software and an on-line
DOS manual package called ASSIST. A bon
us that AT & T 6300's
seem to have over other systems is that its power supply is more
than sufficient to handle the burden of a hard disk! To be sure,
verify your unit has a power supply of at least 135 V.
I recommend Express Systems, (312) 882-7733. This company has
been advertising in BYTE for some time now. TECH JOURNAL's
August, 1985 issue gave the company's products a glowing report.
Express Systems announced recently that it has a 20 Meg Hard Disk
card for $595, a concentrator to combine the card with an
existing hard disk for $95.
DIP SWITCH SETTINGS for PC 6300*
Bank 1 Settings with A drive and C hard disk
**** Off 1 2 5 7 8 ****
**** On 3 4 6 ****
STEP TWO - UPGRADING MEMORY (RAM)
Most PC owners think of upgrading their system's RAM after the
first big software purchase. If you want to use Lotus, for
example, you definitely have to have at least 384 K to create
useful spreadsheets. If you want to use hard disk organizer
packages you'll use 50-60 K in RAM to support the memory resident
application. Upgrading is usually very expensive. For a 128 K
system owner, you would need to acquire 128 K for the mother
board, an expansion board, and 384 K of RAM. Depending on the
vendor this can cost you $300 to $600.
The AT & T 6300 has a little known secret. It can accommodate
640 K on its mother board. For less than $100 I was able to add
512 K in memory using 18 256k, 150 ns dynamic chips.
(specifically, NEC...256Kx1.D41256C-15) Total installation time
was less than 30 minutes.
I recommend Microprocessors Unlimited, (918) 267-4961. This
company will provide fast and dependable service---with
precautionary and helpful documentation at no additional expense.
DIP SWITCH SETTINGS for PC 6300*
Bank 0 settings with 640 K memory on motherboard (BYTE DEC'85)
**** Off 2 5 6 ****
**** On 1 3 4 7 8 ****
Bank 0 settings with 256 K memory on motherboard
**** Off 2 8 ****
**** On 1 3 4 5 6 7 ****
Bank 0 settings with 128 K memory on motherboard
**** Off 1 8 ****
**** On 2 3 4 5 6 7 ****
STEP THREE - UPGRADING PC 6300 WITH CO-PROCESSOR
I can't recommend any bargains to you for saving money on
installing the co-processor for the AT & T 6300 (also known as
the 8087-2 Numeric Data Processor). I can provide some assistance
that will save you time and significant aggravation.
I wanted to co-processor to improve Lotus 123's calculating
power. This information with therefore be relative to installing
the co-processor for use with Lotus 123. First of all, contrary
to the general comments being made about 123---I've had no
problems for the record. When I called Lotus support for help
with installation of the co-processor, their staff was courteous
and very well versed in the AT & T 6300! I found this attitude
very comforting --- unfortunately, the Lotus support staff knew
more about the problem I was to face that AT & T support staff.
(To AT & T's credit, their staff went out of their way to assist
me---their only problem was their lack of familiarity with 123.)
As far as the potential problem: Lotus documentation states that
the program will recognize the math co-processor if it is
present. The co-processor's instructions are extremely easy to
follow. (The dip switch setting is provided: Bank 1, set switch
5 to off.) You put everything together and the Lotus 123 status
screen indicates "Math co-processor: (None)"!
The solution: if you come up with the same problem, you need to
order 1.
reen indicates "Math co-processor: (None)"!
The solution: if you come up with the same problem, you need to
order