System One Hi-Score save

Shavenyak

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Donor 2023
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So where are the high scores saved at:

---mother board or daughter board?
---Which chip?

My Indiana Jones won't save the high-scores. Thanks!
 
According to the attached chart (which used to be on ataricade.com, but isn't any longer) it's a "2804" EEPROM. Not too familiar with that device, but it appears that pacmandotcom.com sell them for $7:

http://store.pacmandotcom.com/searc...y=desc&search_query=2804&submit_search=Search

EDIT: It's at 15F (on the main board) according to the schematics. At least a couple other ICs (besides the EEPROM itself) could also cause a HS save problem: the 74LS245 @ 15E passes data back and forth between the EEPROM and the main data bus. In addition 15C & 16D are directly involved in controlling the enable line of the EEPROM. Seems plausible to suspect the EEPROM, though... just wanted to point out that you can't be certain that it IS the problem...
 

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