next up previous contents
Next: Arithmetic operations on the Up: Instructions Previous: Instructions

Stackinstructions

  Following is a list of stack operations. These instructions are differentiated by the double-word- and the MOD-bits. Those operations not defined by these bits are illegal instructions. These instructions can be used for further extensions to the instruction set. Because of the double-word bit used to differentiat instructions there are no short versions of the stack instructions.

\framebox {
\begin{tabular}
{clc}
\vspace{0.5cm}
D+MOD & Description & Mnemonic\...
 ...rand on the stack & PUSH\ 1100 & Pop operand from stack & POP\ \end{tabular}}