PUSH
This instruction pushes an element onto the stack. The source operand is not modified. The flags are not affected.
This instruction first decrements the SP register by 2 and then stores the source operand at the address pointed to by SP.
Usage
vonsim
PUSH sourcesource can only be a 16-bit register (see operand types).
Encoding
01100rrr
Where rrr encodes the source register as follows:
rrr | source |
|---|---|
000 | AX |
001 | CX |
010 | DX |
011 | BX |
100 | SP |
101 | -- |
110 | -- |
111 | -- |