Release BIOS
        File name       :990302S.rom
        Check sum       :C5E7H
        Release date    :1999/3/02
        ECN             :SNG-99000X

        1. chang Sis 620 Reg 8AH to 9BH

Release BIOS
        File name       :990306S.rom
        Check sum       :BCB4H
        Release date    :1999/3/06
        ECN             :SNG-9900XX

        1. support IDT CPU
        2. Add support Cyrix M-II CPU Table (300 ~ 466)
                M-II 350 to M-II 466 VCore=2.2V
        3. Suppord AMD K6-2 400(2.2V)/450Mhz(2.4V)
        4. Support AMD K6-III 400/450 (2.4V) CPU
        5. support Rise CPU
        
Release BIOS
        File name       :990313S.rom
        Check sum       :BF99H
        Release date    :1999/3/13
        ECN             :SNG-9