486

configname: CONFIG_M486

Processor family
└─>486
In linux kernel since version 2.6.12  
Select this for an 486-class CPU such as AMD/Cyrix/IBM/Intel
486DX/DX2/DX4 or SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.

depends
CONFIG_X86_32