Unconditionally transfers control to “label”. Jumps by default are within -32768 to 32767 bytes from the instruction following the jump. NEAR and SHORT jumps cause the IP to be updated while FAR jumps cause CS and IP to be updated.
Usage:
JMP destination ;
| Clocks | ||||
|---|---|---|---|---|
| Operands | 808x | 286 | 386 | 486 |
| rel8 (relative) | 15 | 7+m | 7+m | 3 |
| rel16 (relative) | 15 | 7+m | 7+m | 3 |
| rel32 (relative) | - | - | 7+m | 3 |
| reg16 (near, register indirect) | 11 | 7+m | 7+m | 5 |
| reg32 (near, register indirect) | - | - | 7+m | 5 |
| mem16 (near, mem indirect) | 18+EA | 11+m | 10+m | 5 |
| mem32 (near, mem indirect) | 24+EA | 15+m | 10+m | 5 |
| ptr16:16 (far, dword immed) | - | - | 12+m | 17 |
| ptr16:16 (far, PM dword immed) | - | - | 27+m | 19 |
| ptr16:16 (call gate, same priv.) | - | 38+m | 45+m | 32 |
| ptr16:16 (via TSS) | - | 175+m | TS | |
| ptr16:16 (via task gate) | - | 180+m | TS | 43+TS |
| mem16:16 (far, indirect) | - | - | 43+m | 13 |
| mem16:16 (far, PM indirect) | - | - | 31+m | 18 |
| mem16:16 (call gate, same priv.) | - | 41+m | 49+m | 31 |
| mem16:16 (via TSS) | - | 178+m | 5+TS | |
| mem16:16 (via task gate) | - | 183+m | 5+TS | |
| ptr16:32 (far, 6 byte immed) | - | - | 12+m | 13 |
| ptr16:32 (far, PM 6 byte immed) | - | - | 27+m | 18 |
| ptr16:32 (call gate, same priv.) | - | - | 45+m | 31 |
| ptr16:32 (via TSS) | - | - | TS | 42+TS |
| ptr16:32 (via task state) | - | - | TS | 43+TS |
| m16:32 (far, address at dword) | - | - | 43+m | 13 |
| m16:32 (far, address at dword) | - | - | 31+m | 18 |
| m16:32 (call gate, same priv.) | - | - | 49+m | 31 |
| m16:32 (via TSS) | - | - | 5+TS | 41+TS |
| m16:32 (via task state) | - | - | 5+TS | 42+TS |