PROGRAMMING THE 5420 VIDEO BIOS
PROGRAMMING THE 5420 VIDEO BIOS
PROGRAMMING THE 5420 VIDEO BIOS
PROGRAMMING THE 5420 VIDEO BIOS
PROGRAMMING THE 5420 VIDEO BIOS
The 5420 is factory configured and programmed to support a
standard VGA monitor and a 640 x 480 STN color dual drive LCD
flat panel. If you are using the default monitor and/or flat panel
video BIOS, skip to the “Connecting the Monitor/Display” section.
If you are using a monitor/display other than the default settings,
please read the following instructions. Programming the 5420
requires a serial communications link between your PC and the
Octagon Control Card.
Micro PC Control Systems
•
If you are installing your Micro PC
Control Card for the first
time, follow the instructions in the Control Card user’s
manual for using a video card and continue with the steps in
the section “To program the 5420”.
or
•
If you have already installed the Control Card to boot from a
flash EPROM or static RAM, reconfigure your Control Card to
boot from the BIOS drive (refer to your user’s manual).
Establish a serial communications link between your PC and
Control Card with COM1 as the main console. Continue with
the steps in “To program the 5420”.
To Program the 5420
NOTE: The following instructions assume you are using the 5420
in a Micro PC system.
1.
Power off the 5420.
2.
Make sure W4[3–4] is installed.
BIOS Video Write Enable: W4
Pins Jumpered
Description
[1-2]*
On* = use 32K BIOS;
Off = use 64K BIOS
[3-4]*
BIOS Write Enable
* = default
3.
Set jumper W2[2–3] on the 5420. This disables the 5420 and
allows you to use the serial port on your Control Card for
terminal emulation.
5420 Super VGA Video Card – 5
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