I remember one post from a lot of years ago, in some web I can not remember, about Nintendo 64 manufacture history. I remember that it said that Sillicom Graphics (SGI) had heavy issues during the design/manufacture of the N64 RCP coprocessor. Because of this, finally this chip was made by other company, not SGI.

Recently I looked for that post but could not find it. I read other posts about this history but none talks about this SGI issue thing.

Does somebody know anything about this? Maybe is just me remembering it wrong.