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Re: Some interesting MOS/CSG chip layout comparisons
Posted: Thu Jan 30, 2020 10:45 am
by fhw72
The latest overlay I did:
https://is.gd/7HRkOq
Fat Agnus/CSG8375R0 Metal vs. Poly
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Thu Oct 08, 2020 11:07 am
by fhw72
While the vast majority of TED chips for the plus/4, C16 series was
Revision 2 of the 8360 chip there's also a revision 3 out in the wild:
https://is.gd/wnXAU7
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Mon Oct 12, 2020 9:34 am
by fhw72
In case you want to see a side-by-side comparison of the
8360R2 vs. 8360R3:
https://is.gd/eybQeV
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Mon Oct 12, 2020 10:08 am
by BigEd
I can't see any changes jumping out at me, other than the addition of the mask copyright. Presumably the behavioural difference is known? Or is it a difference in quality, in some way?
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Mon Oct 12, 2020 12:22 pm
by fhw72
So far I think the ESD protection at the pads was changed and a the back-bias generator was changed very(!) slightly.
Apart from that I didn't see anything else - but I didn't take a look at full resolution yet.
My guess is that it was just a change for a different manufacturing process. Note: the R2 was introduced 1984
and the R3 apparently 1986 and MOS migrated from NMOS to HMOS-I and HMOS-II inbetween IIRC.
MOS/CSG did the same with the 6581 which had almost identical layouts from R2 to R3 and R4. Only changes for
the manufacturing process (e.g. die shrink).
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Tue Oct 20, 2020 8:19 am
by fhw72
Here's a comparison of the
CSG8501R4 vs. MOS6509R7 die:
https://is.gd/9VbUjo
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Sat Oct 31, 2020 2:54 pm
by fhw72
The 2nd most important chip:
https://is.gd/bITbIm
6581R4AR metal + poly layer
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Mon Nov 23, 2020 11:33 am
by fhw72
Here's some comparison of the PAL vs NTSC version
of the VIC-II:
https://is.gd/PYsfv9
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Tue Dec 01, 2020 3:42 pm
by fhw72
Finally the PAL VIC-II:
https://is.gd/ZvoqC3
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Sat Feb 06, 2021 5:08 pm
by fhw72
Just for the sake of it I started vectorizing the 6509R7:
Re: Some interesting MOS/CSG chip layout comparisons
Posted: Fri Dec 17, 2021 8:00 am
by fhw72