Something I was curious about - PS2 devkits and HW revisions

[SaltedHashflip]

I don't have a specific reason as to why I'm asking this, it's just something I was wondering as a non-developer: Do we know if the official TOOL units were revised to include slim-like components i.e the PowerPC IOP w/ DECKARD or combined EE+GS chip (and the DRAM+RDRAM model) as time went on or did all that stuff just stay in a relatively "vanilla" state while Sony's regulations and SDK were updated to compensate for consumer-level hardware changes?
Not only that, but did anyone ever figure out why a small handful of PS2 games have issues while being play on slim consoles that aren't present on the fat models? Is it an issue potentially potentially caused by emulation accuracy issues in Deckard or do things go deeper than that?

 

[sp193]

I don't have the answers to the crux of your questions, but they never had to add compatibility to fit the new hardware because all PS2s were meant to be forward and backward-compatible with the software.
The chips within the T10000 were shared with the SCPH-10000. That PS2 has more of less the same compatibility with newer models.

Tests on consumer-level hardware were done with the DEX, or those "TEST" PS2s that look like consumer PS2s. There exists the TDB startup card, to enable debugging to a certain degree on these sets.

 

[TnA]

1. Yes some incompatibilities are caused by the DECKARD-IOP-Emulation as had been proven on old DECKARD-PS2s vs. newer models with an updated config-file. (I think @kozarovv made a thread about it.)
2. Well, it seems they were quite closely related to CEX-Models especially starting from DECKARD-PS2s an onwards. DECKARD-PS2s can be converted to DEX (via NVRAM-Manipulation)!