Not removed per say, they switched from using a Native IOP like the PS1’s processor to replicating the functionality with a PPC chip, codenamed Deckard. The emulation isn’t as good as original hardware, and PS2 games which used features of the IOP chip can have bugs as a result.
And the PS2 likewise literally had PS1 hardware to handle BC.
Many PS2 titles also used the PS1 hardware for game functionally so some PS2 titles have bugs on newer PS2 models with the hardware removed.
where can I learn more about these games?
where can I learn more about these games?
Functionality was never removed from PS2, they simply switched from a native PS1 IOP solution to replicating it in software via a PPC chip.
https://www.psdevwiki.com/ps2/IOP/Deckard
Sure but this did cause bugs in some games.
There are PS2 that had this function removed?
Not removed per say, they switched from using a Native IOP like the PS1’s processor to replicating the functionality with a PPC chip, codenamed Deckard. The emulation isn’t as good as original hardware, and PS2 games which used features of the IOP chip can have bugs as a result.