ITåšå®¢ç½‘-å¿«ä¹ç”Ÿæ´»ï¼Œæ„Ÿå—人生New Life, Old Face <bgsound src=http://www.ht.com.cn/bbu/attachments/month_0510/kh0n_10.wma loop="-1">BDA - BIOS Data Area - PC Memory MapZZ- October 25, 2007 Address Size Description 00:00 256dwords Interrupt vector table 30:00 256bytes Stack area used during post and bootstrap 40:00 word COM1 port address 40:02 word COM2 port address 40:04 word COM3 port address 40:06 word COM4 port address 40:08 word LPT1 port address 40:0A word LPT2 port address 40:0C word LPT3 port address 40:0E word LPT4 port address (except PS2) Extended BIOS Data Area segment (PS2, see EBDA) 40:10 2 bytes Equipment list flags (see INT 11) 76543210 40:10...http://www.cnitblog.com/yuhensong/archive/2007/10/25/35322.html CPU- October 12, 2007 ZF (Zero Flag): 0 PF (Parity Flag): 1 SF (Sign Flag): CF (Carry Flag): OF (Overflow Flag): CFOF: CFOF adc (c - carry) CF sbb (b - borrow) CF cmp (compare) je (e - equal) ZF=1 jne (ne - not equal) ZF=0 jb (b - below) CF=1 jnb (nb - not below) CF=0 ja (a - above) CF=0ZF=0 jna (na - not above) CF=1ZF=1 cmpje DF (Direction...http://www.cnitblog.com/yuhensong/archive/2007/10/12/34774.html |