LEA - Load Effective Address |
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Code | Mnemonic | Description |
8D / r | LEA r16, m | Store effective address for m in register r16 |
8D / r | LEA r32, m | Store effective address for m in register r32 |
Operand Size | Address Size | Action Performed |
16 | 16 | 16-bit effective address is calculated and stored in requested 16-bit register destination. |
16 | 32 | 32-bit effective address is calculated. The lower 16 bits of the address are stored in the requested 16-bit register destination. |
32 | 16 | 16-bit effective address is calculated. The 16-bit address is zero-extended and stored in the requested 32-bit register destination. |
32 | 32 | 32-bit effective address is calculated and stored in the requested 32-bit register destination. |
Operands | Bytes | Clocks | |
r16, mem | 2 + d(2) | 1 | UV |
r32, mem | 2 + d(2) | 1 | UV |
ID | unaffected | DF | unaffected |
VIP | unaffected | IF | unaffected |
VIF | unaffected | TF | unaffected |
AC | unaffected | SF | unaffected |
VM | unaffected | ZF | unaffected |
RF | unaffected | AF | unaffected |
NT | unaffected | PF | unaffected |
IOPL | unaffected | CF | unaffected |
OF | unaffected |