Description

Put the location of a new unresolved forward reference orig onto the control flow stack. Append the run-time semantics given below to the current definition. The semantics are incomplete until orig is resolved, e.g., by THEN or ELSE.

Run-time: ( x -- )

If all bits of x are zero, continue execution at the location specified by the resolution of orig.

Popis

Slovo IF je součástí konstrukce {xref linkend="if...then"/} a {xref linkend="if...else...then"/}.

Kód slova v Quartus Forth

BC4A:    JSR     $-4442(A2)
BC4E:     JSR      $-43C6(A2)
BC52:     RTS          ;= EXIT