Modified BIOS - "This BIOS is free from the Year 2094 and 2GB Harddisk display limit bugs, and fully supports the Am5x86 and Cx5x86 CPUs, and Harddisks up to 8GB.
You can Enable/Disable the L1 and L2 cache separately from the BIOS, but the L1 WB/WT option is automatic.
This BIOS shows the “L1 cache: WB/WT” option in the BIOS Setup only for the P24T and for Cyrix CPUs.
For the P24D (486DX2WB), Am486DX4WB and Am5x86, this 11/28/95 BIOS can detect if these CPUs are in WB mode and programs the chipset registers accordingly. It then hides the “L1 cache: WB/WT” option, because user interaction for this automatic function is not required."