Williams System3-System6 Flipper EPROM files for a System7 CPU Board.
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The following files are for use ONLY in a System7 CPU board. They
are the "Flipper" EPROM files for older System3 to System6 games.
Originally the Flipper ROMs on System3 to System6 games used two
2716 EPROMs at location IC20 and IC17. 

To run this older software on the newer System7 CPU board, the 
original two Flipper ROM files need to be combined into a single 
2532 EPROM (which is done for you in the attached ZIP'ed files). 
This new Flipper ROM will install on the System7 CPU board at 
location IC17. 

Also the original GameROM 2716 EPROM should be installed on the 
System7 CPU board at location IC14. These two EPROMs are all that is
needed to run System3 to System6 software on a System7 CPU board 
(with the exception of Firepower). The original 2716 GameROM software
can be downloaded from the internet site listed below (in addition
to the Firepower System6 and System7 CPU board instructions/files).

Jumpers: To run older System3 to System6 software on the System7 CPU 
board, the System7 CPU board should be jumpered for a 
NON Hyperball/Defender game!

Using the Firepower EPROMs in a System7 CPU Board.
To do this, download this special ZIP file Firepower for System7. The combination 2532 Green Flipper EPROM will install in the socket IC17, just like any other System6 game. Two other 2716 EPROMs need to be installed at IC14 and IC20. That's all that needs to be done (no jumper modifications), and Firepower will work on a System7 CPU board jumpered for any game other than Hyperball/Defender. 

For the technically oriented, the System7 EPROM configuration uses the original 2716 System6 IC14 Firepower EPROM on the System7 CPU at IC20. The new System7 2716 IC14 EPROM is a binary copy of the three original 512 byte PROMs (that lived at IC21+IC22+IC26 on the System6 CPU board). And of course the 2532 Flipper EPROM at System7's IC17 is a binary copy of the two original "green" Flipper EPROMs, as described above. 

For more information on jumpers, ROM files, repair info, and general 
System3 to System7 repair tips, please see the internet pinball
repair site at http://marvin3m.com/fix.htm


