Here´s a little batch file for all the necessary register settings after startup:

It´s for 512K / 2-banks L2 cache and it assumes that both the "port.exe" for VIA registers and the "et586.exe" for setting Cyrix 5x86 settings are present in the respective directory.
I hope this is useful for those trying to max out the FIC 486-VIP-IO and alike mainboards.

Please note that under these settings RAM (60nS) and SRAM chips need to be selected very carefully to ensure stable operation!