Imaging the Genesis chips

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lordkain
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Imaging the Genesis chips

Postby lordkain » Sat Mar 21, 2020 4:54 pm

I have planned to image the different chips from the Megadrive/Genesis system, including the ones found in games.

First chip imaged is 315-5709 and images are available here: https://www.dropbox.com/sh/4dvga2jt19rg ... 25UOa?dl=0
This is the SSF2 mapper, not the most useful chip but that's a start.

Unfortunately I am not able to use software I have for automatic netlist extraction because that would require SEM images and these
are tricky to produce for old chips like this one. The lack of planarization makes deprocessing a bit harder and optical images are
easier to produce. Still, the chip can definitely be reverse engineered from the images.

I thought some of you might be interested in working on this so I have decided to publish the images.

Have fun!

slingshot
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Re: Imaging the Genesis chips

Postby slingshot » Sat Mar 21, 2020 10:00 pm

I think the most interesting would be the 315-5364. Precise bus timings are still not well-known.

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jotego
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Re: Imaging the Genesis chips

Postby jotego » Thu Mar 26, 2020 10:44 am

slingshot wrote:I think the most interesting would be the 315-5364. Precise bus timings are still not well-known.


I agree.

This is a great iniciative. Please go on with it :-D
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Cyprian
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Re: Imaging the Genesis chips

Postby Cyprian » Thu Mar 26, 2020 12:23 pm

I tried to open one of that jpg with XNview but it only shows me "note enough memory".
I have 8GB RAM
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Gehstock
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Re: Imaging the Genesis chips

Postby Gehstock » Fri Mar 27, 2020 1:00 am



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