3 ms·Wasn't Intel 8087 based on AMD 9511? I always thought Intel was responsible for x86 and AMD for x87 and x64.by bitL 8y agoWasn't Intel 8087 based on AMD 9511? I always thought Intel was responsible for x86 and AMD for x87 and x64.kens 8y agoIntel licensed the Am9511 as the Intel 8231. The 8087 was a new design developed by Intel.bitL 8y agoAh OK, I vaguely remembered x87 as the reason for why Intel was willing to license x86 to AMD and it seems like it was in fact about 8087 predecessor that Intel licensed from AMD...