- , 8- 32- , , . .
- EAX, EBX, ECX, EDX. 32- , AX, BX, CD, DX - 16- , 8- . , AH AL, DX DH DL .. "" .
, AH AL , - 2 ( word - ), - 4 ( dword - ). , , , .
.
DOS , INT.
- CS, DS, ES, FS, GS, SS. 16- , ":".
- CS - ( ) .
- DS - () , .. , ..
- SS - .
- ES, FS, GS - , .
- EIP, ESP, EBP, ESI, EDI. 32- , IP, SP, BP, SI, DI.
- EIP - , ( ) , . CS:IP.
- ESP (, PUSH).
- , ( "" ). , - , SS:EBP.
- ESI - , " " ( DS:SI), EDI- ( ES:EDI).
- CR0, CR1, CR2, CR3. 32- (, ..), .. (Kernel, ). .
- DR0, DR1, DR2, DR3, DR4, DR5, DR6, DR7. , , .
- TR6, TR7. . .