Kongfucius said:
Well you see that's why I didn't say it was gospel. I think it was mentioned in the vita thread in around july, because the way in which J+D was so closely tailored to the PS2's hardware including the old PS1 chips was one reason cited why the HD collection on vita was a pretty poor port by all accounts. That said I suppose its still possible, bearing in mind that until PS3, I can't think of a console which initially had built-in BC which was later removed |
If I remember old interviews Naughty Dogs used the PS1 hardware in the PS2 as a secondary processor and was used more specifically to compute dynamically the lighting of the polygons (which polygon to light I think). That's why this game had the higher number in-time polygons on PS2 (10 million/sec I reckon) and had decent lighting.
So that's why PS1 hardware CPU was always (in some different ways later) inside the PS2.
They were already Naughty at ND, they even cheated with available hardware!