Space Invaders Cocktail to Upright Conversion

Taito Space Invaders 2 and 3-layer boards were commonly used in tabletop games with upright games normally using the 'L' shaped boardsets, however for Space Invaders Part II Taito used the 2 and 3-layer boardsets in upright games.

If we wanted to use one configured for a cocktail cabinet for use in an upright cabinet, then we must disable the screen rotation for Player 2 and ensure that the controls work correctly.

Note that this conversion only applies to boards that use the MB14241 custom shifter chip part number PV070010, PV070010A and CV070020 which will look similar the board shown here.

Conversion Step 1:

Disconnect the screen rotation signal by cutting the track on the back of the board between IC 1 Pin-9 and IC 7 Pin-9 as shown in the image.

Conversion Step 2:

Ground the screen rotation signal by adding a jumper from ground to IC 7 Pin-9 as shown in the image.

Conversion Step 3:

Join the two sets of control inputs to allow the Player 1 controls to work for Player 1 and Player 2.

Set DIP switches 5, 6 and 7 to OFF for upright operation and insert the three jumpers above the DIP switch block as shown in the picture.

Undoing the conversion Step 2:

Set DIP switches 5, 6 and 7 to ON for cocktail operation and remove the three jumpers above the DIP switch block as shown in the picture.

Undoing the conversion Step 2:

Set DIP switches 5,6 and 7 to ON for cocktail operation and remove the three jumpers above the DIP switch block as shown in the picture.