The 486DX had an FPU. It was the 486SX that lacked it. The "FPU" upgrade for a 4...

cantrecallmypwd on March 5, 2025 | parent | context | favorite | on: Why fastDOOM is fast

The 486DX had an FPU. It was the 486SX that lacked it. The "FPU" upgrade for a 486SX was a entire special version of the 486DX that disabled the original 486SX entirely.