Decrements SP by the size of the operand (two or four, byte values are sign extended) and transfers one word from source to the stack top (SS:SP).
Usage:
PUSH src PUSH immed ; (80188+ only)
Modifies flags:
none
| Clocks | Size | ||||
|---|---|---|---|---|---|
| Operands | 808x | 286 | 386 | 486 | Bytes |
| reg16 | 11/15 | 3 | 2 | 1 | 1 |
| reg32 | - | - | 2 | 1 | 1 |
| mem16 | 16+EA | 5 | 5 | 4 | 2-4 |
| mem32 | - | - | 5 | 4 | 2-4 |
| segreg | 10/14 | 3 | 2 | 3 | 1 |
| immed | - | 3 | 2 | 1 | 2-3 |