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extensions_tutorial [2019/12/12 11:36] – [Referencing XC=BASIC symbols in assembly language] neilsextensions_tutorial [2019/12/12 20:14] (current) – [Referencing XC=BASIC symbols in assembly language] neils
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       lda {self}.port       lda {self}.port
       ; Port #2 becomes 0, Port #1 remains 1       ; Port #2 becomes 0, Port #1 remains 1
-      ora #%00000001+      and     #%00000001
       tax       tax
       ; This is how to refer to a global constant       ; This is how to refer to a global constant
-      lda _JOY_PORT2, x +      lda.wx  _JOY_PORT2 
-      ora #%00001000 +      eor     #%11111111 
-      eor #%00001000+      and     #%00010000 
 +      lsr
       lsr       lsr
       lsr       lsr
       lsr       lsr
       ; A now holds the return value of our function       ; A now holds the return value of our function
-      ; Write it to the variable "result!"+      ; Write it to the variable 'result!'
       sta {self}.result       sta {self}.result
     "     "
     return result!     return result!
   endfun   endfun
 +
 +===== Publishing your extension =====
 +
 +When you're done with your extension, please follow these steps:
 +
 +  - Test all functions and commands carefully. Write a detailed test program
 +  - Name your extension ''xcb-ext-<extension_name>.bas''
 +  - Write a detailed documentation to let users know how to use the extension
 +  - Create a GitHub repo with this name: ''xcb-ext-<extension_name>'', upload your files and notify me in email (feketecsaba [at] gmail) about the new extension and I'll add it to the ''extensions/'' folder as a submodule
 +