Step 1 Set Switch And Jumper Options - American Megatrends Enterprise-II User Manual

Step 1 Set Switch and Jumper Options

Set all user-configurable jumpers and
switches and install coprocessors before
installing the motherboard in the chassis.
There are two user-configurable switches
and five jumpers.
SW
SW is a dual 2-bit DIP switch. SW-1 is
used for manufacturing diagnostics. The
motherboard is shipped with this switch
Off. The switch should remain Off.
The COL/MONO (SW-2) switch sets the type
of video display adapter card in the
system. This switch is factory-set to Off,
for a monochrome display adapter (MDA ).
Set On for a color graphics adapter (CGA).
This switch has no effect on EGA and VGA
adapters.
J12 Floppy Disk Type
J12 is a 3 pin single-inline berg. This
jumper selects the floppy disk drive type
when using the onboard floppy controller.
Some 3½" drives (PS/2 compatible) have
inverted DENSEL (density select) signals.
Short Pins 1-2 for normal XT and AT style
drives (default). Short Pins 2-3 for PS/2
compatible drives (inverted DENSEL). When
using PS/2-compatible drives, resistor
network RN13 must be changed from 150
10K .
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Chapter 2 - Installation
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