26L6420 - Tales of Phantasia

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mrkaylor
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Joined: Fri Aug 12, 2016 7:52 am

26L6420 - Tales of Phantasia

Post by mrkaylor » Fri Aug 12, 2016 10:01 am

Well this is my first post. Up until now I haven't had any reason to make one, everything I've done until now has been done before. Anyway here goes.

I recently created a Star Ocean English cart with a 26L6420, which of course is a pretty simple task. However that got me thinking that this chip might work for a single eeprom Tales of Phantasia with the right 16bit to 8bit conversion. So I have read everything I could find regarding this subject and it all revolves around using a 27C322. What changes would I have to make to the attached diagram, which was posted by lunaris a while ago, to replace the 27C322 with a 26L6420? I have a Madden 96 game that I'll be using as a donor for this project.

Image


I completely realize there are easier ways to do this but I thought I'd give this a go first.
Michael

lidnariq
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Joined: Sun Apr 13, 2008 11:12 am
Location: Seattle

Re: 26L6420 - Tales of Phantasia

Post by lidnariq » Fri Aug 12, 2016 12:49 pm

I am explicitly refusing to answer your question because:

Don't use a 3V component in a 5V system without voltage translation.

It will eventually destroy the component or destroy the system (because you are powering the component through the system's address and data bus!)

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B00daW
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Joined: Thu Jan 03, 2008 1:48 pm

Re: 26L6420 - Tales of Phantasia

Post by B00daW » Fri Aug 12, 2016 6:55 pm

(Please move this to "Reproduction.")

mrkaylor
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Joined: Fri Aug 12, 2016 7:52 am

Re: 26L6420 - Tales of Phantasia

Post by mrkaylor » Fri Aug 12, 2016 8:50 pm

Sorry about that B00daW. I thought I was in the right place.

Regardless of the 3v/5v issue I still think it's an interesting topic. I just thought I'd ask before I tried it out.

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B00daW
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Re: 26L6420 - Tales of Phantasia

Post by B00daW » Sat Aug 13, 2016 3:30 pm

No need to apologize. :)

It will likely get more "foot traffic" in this subsection. The users that frequent this nook are most experienced with reproduction and PCB rewiring matters.

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