For posterity, here are the jumper settings on a Franklin Ace 2000
series RGB board, so sayeth the "Franklin Computer ACE 2000 Series
Computer RGB Interface Manual Supplement:"

Jumper W1: Negative Vertical Sync. Should be set On for monitors that
specify this requirement.

Jumper W2: Positive Vertical Sync. Should be set On for monitors that
specify this requirement. This is generally the more common setting.

Jumper W3: Monochrome Double High Resolution. This jumper selects a
single color (the text color selected with W7 and W7) on a black
background with double high resolution. This is generally only used
with specific software applications, such as Computer Assisted Design,
where the 4 color pixels normally used for RGB are traded for maximum
screen resolution.

Jumper W4: Positive Horizontal Sync. Should be selected On for
monitors that specify this requirement. This is sometimes called
Composite Sync, which means that the (positive) vertical and the
horizontal sync signals are together.

Jumper W5: Negative Horizontal Sync. Should be selected On for the
monitors that specify this requirement. This is sometimes called
Composite Sync, which means that the (negative) vertical and the
horizontal sync signals are together.

Jumpers W6 and J7:Text color selection. These jumpers select the
color of the text displayed on the black background according to the
following arrangement:
W6, W7 Off = White
W6 On, W7 Off = Amber
W6 Off, W7 On = Green
W6, W7 On = Blue
The factory setting has white text selected.

Jumper W8: Apple/IBM mode. This jumper selects the configuration of
color matrix that the computer uses, either according to the Apple or
the IBM formats.

If your RGB monitor says, "Apple compatible" or "IBM compatible," or
has some other indication that it is designed to work with one of hose
computers, try the configuration suggested for that computer.

Suggested Configuration:

Apple:
W1 - Off
W2 - On
W4 - Off
W5 - On
W8 - Off

IBM:
W1 - Off
W2 - On
W4 - On
W5 - Off
W8 - On

The other jumpers (W3, W6, and W7) are user preferences.

If these configurations don't work, consult the manual of the monitor
to determine the settings needed. If you still have problems, consult
your dealer or the monitor manufacturer.