һ ʴ⣺
1 ͼ岿ɣ洢豸豸ƼתҪ㣬洢ҪǴ洢Ϣ豸ҪϢ豸ҪǼϢ
2 IBM PCҪֻ洢洢ֻ洢ֻܶд룬洢дҲԶ
3 8086ֳΪ16λֱӷʵĴ洢Ԫ2ֽڡ
4 8088ַɣεַƫƵַַ=εַ*16+ƫƵַ
5 һִǰCS=0A7F0HIP=2B40Hóʼַ=0A7F0H*16+2B40H=0AAA40H
6
78H 02003H
56H 02002H
34H 02001H
12H 02000H
7ѰַʽָѰҲַ߲ĸַѰַʽҪ7
1Ѱַ 2ĴѰַ 3ֱѰַ 4ĴѰַ 5ĴѰַʽ 6ַַѰַʽ 7ԻַַѰַʽ
1 CPU洢 2 44ALU 3 ַַ
4 ƫƵַλַ*16+ƫƵַμĴ 5롢
6ĴѰַʽĴѰֱַѰַַַѰַʽĴѰַѰַԻַַѰַʽĴѰַʽ
7ZFCFSFOF 81з 905AEH4000H
100AB0H110F8B0H11 ѡ
1C 2A 3C 4B 5A 6D 7C 8B 9C 10D
ġǷж
1 2 3 4 5 6 塢ҪѡӦָָ 1 MOV AX4629H 2 LDS BXDATA 3 ADD DXBX 4 SUB AX0360H 5 MOV BXES[0500H] 6 MOV CL2 SHL ALCL 7IMUL BL 8MOV CX0 9OR DX0E00H 5 AND AL0FH 6 XOR CL0F0H 7 MOV CL2 SAR AXCL 13MOV CL4 ROL ALCL