The
Video BIOS information:
Date: XXIXXIXX
Version: XX/XXIXX
OEM
Code: X
If
your
ROM BIOS shows
a date earlier than
October
27, 1982,
you will
need to
replace your system
ROM
BIOS to
work
with the adapter.
Earlier
versions
of
the
ROM BIOS
for computers
manufactured
in 1981
or
1982
do
not
support
EGA or VGA
graphics
modes
Appendix
C.
DRAM
Upgrades
The VGA
adapter can
be configured
with two,
or
four
piecesof
56K
x 4
Fast
Page
Mode DRAM.
Upgrading
from
two to
four
DRAM
allows you
to
display
up to
1024
x
768—
16 colors.
To
purchase
DRAM,
contact
your
dealer. a local
eledronics
store,
or
a mail order
house
(which advertise in publications such as
Computer Shopper,
PC
Magazine,
PC
World,
and BYTE). Order256K x
4 Fast page
Mode
DRAM
(sometimes called one
megabitDRAM).
Upgrading
From 256K
DRAM
to
512K
1.
Place the adapter componentside up on
a
firm, flat, nonstaticsurface )avoid
wool materials) The gold edge connectorshould be facing
you.
2.
Insert the DRAM
into
the sockets provided on the lefi-hand comer
of
the
board. The notched side
of
the
DRAM should be facing lefi. Be careful not
to bend
any pins. Be
sure each DRAM
is
seated
snugly.
3.
To checkthat
the
DRAM hasbeen installedproperly,place theboard in your
system
and
tum the systemON.A copyrightand theamount
of
videoDRAM
detected
will
appear in the upper lefthand corner
of
the initial
boot screen.
If
the amount
of
DRAM detected
is
51 2K, you have installed the DRAM
successfully.
If
the
amount
of
DRAM detected
is
256K, remove the adapter
from your system. Check
to
see that
all
pins fit snugly into their respective
A-6
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