FIC Sahara BIOS Update 

PCB: 1.3
New BIOS version: 1.15IS12
BIOS file name: is1512.bin
BIOS release date: August 19, 1998
Flash utility: flash625.exe
Fixes: 
1. Modified some BIOS Setup items
2. Added support for the new AGP/chipset chips
3. Added support for Auto CAS latency, RAS Auto by reading SPD.