BIOS Revision History

Bios name

Remarks
AK31S203 Date code:05/23/2001   checksum : 83DC
1. About DDR Show clock issue.
Current FSB Frequency 200/266
Current DRAM Frequency 200/266
AK31S207

Date code:06/21/2001   checksum : D747
1. Added x14.0 Ratio table and remove x5.0
2. Not add 1 if CPU Clock single digit is 9
3. Show CPU Clock by BIOS setup value.
4. Fixed Show "Press DEL to enter SETU " error.
AK31S20D Date code:08/08/2001   checksum : BF00    
( Unbuffer )
1. Micron 256M (Double Side) x 4, Micron 256M (Double Side) x 3,
    Rx6C = AC, Rx6D = CC, RxF0 = 01
                                             
2. Nanya 512M (Double Side) x 4, Nanya 512M (Double Side) x 3,
    Rx6C = FC, Rx6D = DF, RxF0 = 00

3. Crucial 128M (Single Side) x 4, Rx6C = F4, Rx6D = 45, RxF0 = 01

4. Crucial 256M (Double Side) x 4,Crucial 256M (Double Side)x 3,
    Rx6C = AC, Rx6D = CC, RxF0 = 01

( Register )
1. Micron 256M (Double Side) x 4, Micron 256M (Double Side) x 3,
    Rx6C = 5C, Rx6D = CF, RxF0 = 01
AK31S20E Date code:9/05/2001   checksum : F200
1. Set command Rate default = 2T
2. Fixed registered DIMM hung up C1.
3. Fixed Host clock by 133Mhz.
AK31S20F Date code: 9/26/2001   checksum : F000
Support AthlonXP.
AK31S20G Date code:11/30/2001   checksum : 8900
Patch nVidia Geforce 3 VGA driver issue when AGP aperture size select 64M.
AK31S20H

Date code:12/11/2001   checksum : 7200
1. Add full_screen_logo function

2. CPU clock is 100MHz if load optimized defaults.
AK31S20J

Date code:01/09/2002   checksum : 1C00

Support AthlonXP 2000+