BERZERK/FRENZY Adapter Board Installation.

I) Adapter Board Construction

I've added a B-size postscript format drawing of the layout that I used
for my boards. I would recommend following it since alot of thought
was put into the flow of the signals. A wire run list is included
in the package to make the point-to-point wiring a little easier.
The only thing that I think would give anyone trouble would be
the 23 position connectors, make sure you correctly align them
before they are soldered.

*Suggestion #1 - Use a plated thru-hole type breadboard.
*Suggestion #2 - Make sure the +5V and GND wires are fairly heavy.
    I used Vector T107 bus strips for power and ground, #28AWG W-W
    wire for the signals.
*Suggestion #3 - Double check your work against the schematic. EVERY
    wire. It's tedious but worth it.

II) Installation

1) Disconnect all cables connected to the ZPU-1000 board. Remove
   the screws and place the board on a static-free work surface.

2) Remove the Berzerk EPROMS.

3) Carefully cut pin 6 of IC 4A. Cut the leg halfway between the IC body
   and the PC board, this way it can be resoldered if necessary.

4) Cut pin 7 of IC E6 in the same manner.

5) Crimp Molex pins (08-50-0114) onto 4 six inch lengths of #22 AWG
   stranded wire. You might want to solder these after crimping to
   make them able to withstand pulling. Install two of these wires
   into the 2 position plug (22-01-2027). Install the remaining two
   wires into positions 1 and 2 of the 4 position connector P3
   (22-01-2047).

6) Plug the daughter board into the ZPU-1000. Be sure P5 and P6 are
   aligned properly. Plug the 2 pos'n connector with wires into J4
   of the daughter board. Plug the 4 pos'n connector into J3.

7) 5 VOLT CONNECTIONS - Connector P4 provides the +5VDC for the
   adapter board. The two wires from P4 can be soldered to pin 14
   of IC 2A and 3A but I suggest scraping the solder mask off the
   +5V trace and soldering the wires to it. I connected mine to the
   trace at two seperate points, right next to C4 and next to C10.

8) The remaining two wires are control signals and will have to be 
   soldered to IC legs. Be very careful, don't overheat the IC's.
   Solder the wire from P3-1 to pin 4 of IC 2A (74LS32). Solder the
   wire from P3-2 to pin 13 of IC 6A (74LS04).

9) Remove the DIP shunt from the socket at location C6 on the ZPU.
   This socket is labeled DATA BUS JUMPER. Plug one end of the 16
   pin DIP cable into this socket and plug the other end into the
   16 position IC socket on the adapter aligning pin 1 to pin 1.

   ZPU mods are complete so reinstall the board into the game.

10) GAME SELECT SWITCH - Connector P1 connects the toggle switch, SW1,
   to the adapter board. The length of the wires needed here depends
   on where the switch is to be located. 22AWG wire should work fine.
   I used shielded twisted pair 2/22AWG cable since it was available
   and I connected the shield drain wire to the ZPU's mounting screw.
   The shield should be terminated (connected) at the board end only.
   I recommend keeping this cable as short as possible.

11) Double check all your connections before powering up the game.
   Place the switch in the ON (closed) position and turn the game on,
   The self-diagnostics should run then Berzerk should start, if not
   recheck everything. Turn the game off, put the game select switch
   in the OFF (open) position and turn the game back on. Frenzy should
   come up.

                     <Installation Complete>