Except in the case of the Cyrix 486s which had 80486-like instructions but in a 386 package. (Cyrix's business up until then was selling 387-compatible coproces

Except in the case of the Cyrix 486s which had 80486-like instructions but in a 386 package. (Cyrix's business up until then was selling 387-compatible coprocessors, so perhaps there was some motivation to keep the demand for 386 motherboards up.)