《CMOSRAM地址内容.docxVIP

谁有CMOS RAM地址内容的资料啊?? --------------------------------------------------------------- 在计算机系统中，对CMOS中数据的读写是通过两个I/O端口来实现的，其中，端口70H是一个字节的只写端口，用它来设置CMOS中的数据地址；而端口71H是用来读写端口70H设置的CMOS地址中的数据单元字节内容。CMOS数据保存在地址为00-7F的共128个字节中。在CMOS的128个字节单元中，00H-0FH字节单元中的数据随机性太强，不易作为密钥。1BH～2DH，34H～3FH，40H～7FH是CMOS的保留单元。不同的BIOS版本对此保留单元设置不一样。2EH、2FH单元中存放的是10H～2DH单元中各字节的校验和。系统每次引导时要读取CMOS信息，同时还要检查10H～2DH单元中的各字节的校验和是否与2EH、2FH单元中的数据相同，不同则提示CMOS中数据有错。CMOS的10H～2DH单元中内容涉及到软盘、硬盘、内存、显示卡等最基本的硬件配置。CMOS内容对照地址内容地址内容地址内容地址内容00h Time - Seconds 20h Reserved 40h Extended CMOS 60h User Password 01h Alarm - Seconds 21h Reserved 41h Extended CMOS 61h User Password 02h Time - Minutes 22h Reserved 42h Extended CMOS 62h Extended CMOS 03h Alarm - Minutes 23h Reserved 43h Extended CMOS 63h Extended CMOS 04h Time - Hours 24h Reserved 44h Extended CMOS 64h Extended CMOS 05h Alarm - Hours 25h Reserved 45h Extended CMOS 65h Extended CMOS 06h Date - Day of the week 26h Reserved 46h Extended CMOS 66h Extended CMOS 07h Date - Day 27h Reserved 47h Extended CMOS 67h Extended CMOS 08h Date - Month 28h Reserved 48h Extended CMOS 68h Extended CMOS 09h Date - Year 29h Reserved 49h Extended CMOS 69h Extended CMOS 0Ah Status Register A 2Ah Reserved 4Ah Extended CMOS 6Ah Extended CMOS 0Bh Status Register B 2Bh Reserved 4Bh Extended CMOS 6Bh Extended CMOS 0Ch Status Register C 2Ch Reserved 4Ch Extended CMOS 6Ch Extended CMOS 0Dh Status Register D 2Dh Reserved 4Dh Extended CMOS 6Dh Extended CMOS 0Eh Diagnostic Status 2Eh CMOS Checksum (high byte) 4Eh Extended CMOS 6Eh Extended CMOS 0Fh Shutdown Status 2Fh CMOS Checksum (low byte) 4Fh Extended CMOS 6Fh Extended CMOS 10h A; 30h Extended Memory (high byte) 50h Extended CMOS 70h Extended CMOS 11h Reserved 31h Extended Memory (low byte) 51h Extended CMOS 71h Extended CMOS 12h 0 32h Date - Century 52h Extended CMOS 72h Extended CMOS 13h Reserved 33h Power On Status 53h Extended CMOS 73h Extended CMOS 14h Equipment Installed 34h Reserved 54h Extended CMOS 74h Extended CMO