Strikes and Spares
Bally, 1978Is there a list somewhere of the ROMs that go in the Bally ' early years' SS mahines ?
I'm troubleshooting a 'Strikes & Spares' and 'Eight Ball'.
The manual does not list the part #. I cannot read the writing on the damaged Rom.
I'm mainly interested in U2 and U6.
John
Thank you.....Thank you.....
Question...... the Rom I damaged taking out of the socket is a E-723-20.
I believe I took that out of my 'Eight Ball'. The list says it should be
a E-723-17.
Was that an equivent Rom for that board ?
My Eight Ball isn't running yet, so I don't know how that Rom affected game play.
John
Eight Ball used 2716's.
In addition to what was already stated, you can burn 2516's or 2532's (if you can find them) without any trace mods to the MPU board/jumpers. One hurdle is that a lot of modern burners don't do the 2516's or 2532's.
If you use 2732's or 2716's in any Bally MPU, you will need to perform jumper/trace mods for all the -17+-35 games...
One other helpful hint is that most of the rom files that you download on ipdb.org's site have the correct jumper settings in a .txt or read me file within the ZIP that you download.
Quoted from Astill:8 ball used a -17 board any chip that is not a factory prom will require mod work.
Not true. 2532's or 2516's EPROMS will work with no mods at all in an Eight Ball -17 MPU. I didn't believe it myself, but I have successfully tried it 3 times now after removing and replacing the masked roms.
You can also get 2532<-->2732 socket adapters from Seigecraft Electronics. Those will work as well if you don't want to mod your MPU.
Quoted from JKnPA:Thank you.....Thank you.....
Question...... the Rom I damaged taking out of the socket is a E-723-20.
I believe I took that out of my 'Eight Ball'. The list says it should be
a E-723-17.
Was that an equivent Rom for that board ?
My Eight Ball isn't running yet, so I don't know how that Rom affected game play.
John
in the blurry bit at the top of that page 12 link it says U2 and U6
I wonder if you are mistaken about the 3 in E-723-20 and its really E-720-20 from U6?
Quoted from snyper2099:You can also get 2532<-->2732 socket adapters from Seigecraft Electronics. Those will work as well if you don't want to mod your MPU.
Good call, although one will have to wait for him to get them back in stock (hopefully soon)...
http://www.siegecraft.us/presta/index.php?id_product=33&controller=product&id_lang=1
They have been very popular much to his surprise.
viperrwk
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