Copies byte, word or dword from the source operand to the destination operand. If the destination is SS interrupts are disabled except on early buggy 808x CPUs. Some CPUs disable interrupts if the destination is any of the segment registers.
Usage:
MOV Dest,Src
Modifies flags:
None
286+ only 386+ only
| Clocks | Size | |||||
|---|---|---|---|---|---|---|
| Operands | 808x | 286 | 386 | 486 | Bytes | |
| reg,reg | 2 | 2 | 2 | 1 | 2 | |
| mem,reg | 9+EA | 3 | 2 | 1 | 2-4 | (W88=13+EA) |
| reg,mem | 8+EA | 5 | 4 | 1 | 2-4 | (W88=12+EA) |
| mem,immed | 10+EA | 3 | 2 | 1 | 3-6 | (W88=14+EA) |
| reg,immed | 4 | 2 | 2 | 1 | 2-3 | |
| mem,accum | 10 | 3 | 2 | 1 | 3 | (W88=14) |
| accum,mem | 10 | 5 | 4 | 1 | 3 | (W88=14) |
| segreg,reg16 | 2 | 2 | 2 | 3 | 2 | |
| segreg,mem16 | 8+EA | 5 | 5 | 9 | 2-4 | (W88=12+EA) |
| reg16,segreg | 2 | 2 | 2 | 3 | 2 | |
| mem16,segreg | 9+EA | 3 | 2 | 3 | 2-4 | (W88=13+EA) |
| reg32,CR0/CR2/CR3 | - | - | 6 | 4 | ||
| CR0,reg32 | - | - | 10 | 16 | ||
| CR2,reg32 | - | - | 4 | 4 | 3 | |
| CR3,reg32 | - | - | 5 | 4 | 3 | |
| reg32,DR0/DR1/DR2/DR3 | - | 22 | 10 | 3 | ||
| reg32,DR6/DR7 | - | - | 22 | 10 | 3 | |
| DR0/DR1/DR2/DR3,reg32 | - | 22 | 11 | 3 | ||
| DR6/DR7,reg32 | - | - | 16 | 11 | 3 | |
| reg32,TR6/TR7 | - | - | 12 | 4 | 3 | |
| TR6/TR7,reg32 | - | - | 12 | 4 | 3 | |
| reg32,TR3 | 3 | |||||
| TR3,reg32 | 6 | |||||
If the destination is SS interrupts are disabled except on early buggy 808x CPUs.