Call

Positron16 · Revision 1.1.3.5 · PDF page 328

PDF page 328

Syntax

Call Label

Overview

Execute the assembly language subroutine named label.

Parameters

Label must be a valid label name.

Example

' Call an assembler routine
   Call Asm_Sub

   Asm
     Asm_Sub:
     {mnemonics}
     Return
   EndAsm

Notes.

The Gosub command is usually used to execute a BASIC subroutine. However, if your subroutine happens to be written in assembler, the Call command should be used. The main difference between Gosub and Call is that when Call is used, the label's existence is not checked until assembly time. Using Call, a label in an assembly language section can be accessed that would otherwise be inaccessible to Gosub. This also means that any errors produced will be assembler or linker types, which can be misleading and rather obscure.