3 ms·
The original pentium famously used a 2 bit counter except, IIRC, it was buggy and it didn't actually saturate. It was fixed on the Pentium MMX. A simple 2 bi
by gpderetta 4y ago
The original pentium famously used a 2 bit counter except, IIRC, it was buggy and it didn't actually saturate. It was fixed on the Pentium MMX.
A simple 2 bit predictor wouldn't have been enough for the PPro as the deeper pipeline and the new OoO window required a better predictor.