PCB

I collected the boardset years before finding this cabinet. I arranged the boardset on the original metal plate re building the original wiring.

Coin door

As usual I started from the coin door. I’ve been lucky, I found exactly the same original color. It is a light blue.  

Control panel

Being an Italian version by Elettronica Video Games, it had 2 ashtrays on both sides and the original layout was smaller. Here is the original layout.

Actually nowadays I could repair the original control panel, but in those years I broken it trying to remove from the metal CP; so I bought a repro of the original Williams version covering the holes where the ashtrays were located. The rest was quite usual:

• sanding,
• re painting,
• applying new CP overlay,
• new t-molding.

Plexi

The cabinet was without a bezel so I bought an original Williams plexi repro.

Inside

Once mounted an Hantarex monitor and the original PS I found inside, I had to build the missing part of the wiring.

Cabinet

Do you know the story of these side arts? Read the story on andys-arcade web site. Probably in Italy, the manufacturer (Elettronica Video Games) ignored to reprint the side arts, so although my cab has the proto graphics it is not a real proto.

Hacking 19-in-1

I was quite scared about the possibility my Williams boardset could fall while people was playing. So I decided to plug in the (famous) 19-in-1 board, because I could see the game is very well emulated. But just see and not play, because once I received the board I discovered in half a minute that BUTTON 5 (S5) is supported by software but not by hardware (actually button 5 and 6 for both players). This button is needed because corresponds to the HYPERSPACE button. Setup shows both buttons 5 and 6, it means who wrote the sw wanted to use them and probably he allocated in the right way the specific resources. Backtracking all inputs I could see all of them arrive to the 74244 close to the JAMMA connector, with the exception of P1S5, P1S6, P2S5, P2S6. There are 5 74244 and I discovered that S6 for both players are anyway connected to these buffers but part of the the pull-up circuit misses (and the connection to the JAMMA of course). On the contrary no way to intercept S5. So I moved to the bus tranceivers (74245) between RAM and FLASH. If buttons are managed, they are managed there (!!) Playing a little bit with +5 power and using my finger I could change the status of P1S5 and P2S5. This means that S5 signals are undetermined.  

   
Using a pin (pulled up with a wire connected to the pull-up pin of JP1) I touched the pins waiting for a reaction related to the involved buttons and the PIN 3 of U22 (one of the two 74245) was what I was looking for. So I had to start from there.   First of all I connected a wire to the data-bus on the PIN3 of U22


Then I used a 74244 to complete the circuit. PIN 10 to JAMMA ground PIN 20 to JAMMA +5V PIN 16 to the databus PIN 4 to JAMMA Component side PIN 26 and to a 10K resistor; this resistor then is connected to +5V PIN 1 to PIN1 of U30; in fact this board uses 4 different signals to enable the input drivers and I tried with the one dedicated to PLAYER1 and his buttons. Just a try.  


I’m sorry I haven’t any tool to manage SMD components and boards so my soldering is very bad. Anyway this is the result:  


fixed with some hot glue  

 
It works great and now I have a good board backup 😀 PS reading this post I can see my English is very bad; I’m sorry for that. If you have any question please don’t hesitate to contact me.