Taito/Midway Upright Space Invader EPROM Question

nerdygrrl

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Last winter I purchased the Taito upright version of the original Space Invaders. I cracked open the cabinet only to find that all of the EPROMS are missing on the PCB.

Due to high demand Taito outsourced PCB production on some units to Midway. I have a Midway L shaped board in my unit.

Midway used a number of different 'chips' and I am not sure which set to purchase and I am not sure if the Taito-Midway boards used anything different.

Can anyone tell me how to identify which chips I need (2716 eproms, TMS-2716 (...which are different ), 9316 roms,and even 2732 eproms) and does anyone know if the Taito-Midway boards used the same configuration as the Midway board sets?.

Here are some shots of the board.
IMG_3532.jpg

IMG_3531.jpg
 
Does anyone have any suggestions on how to tell which eproms are needed? Do I just count the pins? Looks at the CPU? Would it be easier to just buy a new SI board?
 
I just purchased a Space Invaders machine (non working) and it has the same board you have there. my chips say 9316B and the motherboard is a Midway 80-900K..

Hope this helps you out..
 
Does anyone have any suggestions on how to tell which eproms are needed? Do I just count the pins? Looks at the CPU? Would it be easier to just buy a new SI board?

I would just follow the instructions on the tom's hardware site and replace the 9316b chips with the 2716 intel chips NOT the TMS2716<<<<different<<<<

http://www.tomshardware.com/forum/84422-13-tech-space-invaders-9316-replacement


There is a jumper in/on the board. I know that someone here has done this before and they could inform you better than I.

If you don't want to mess with it or get another board let me know. I do want to have one of these boards in my collection.
 
Check continuity between the +12v and -5 volt connectors where the power supply feeds into the board and those sockets. If you have +12 and -5 going to the sockets then it will use the pesky TMS2716 EPROMs.

If not, you can use the 5v only ones OR you have to rejumper the board.
 
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