Makefile changes by Greg King

[cc65] / doc / plus4.sgml

diff --git a/doc/plus4.sgml b/doc/plus4.sgml
index 93d5c15e26748d284a2234c763912485f05643a7..2fce4d86a5122f57fb67fcb54ca9956ad1b1a423 100644 (file)
--- a/doc/plus4.sgml
+++ b/doc/plus4.sgml
@@ -185,7 +185,7 @@ does not exist).
   that because of the peculiarities of the 6551 chip transmits are not
   interrupt driven, and the transceiver blocks if the receiver asserts flow
   control because of a full buffer.
-                                                               
+
   You need an adapter to use the builtin port, since the output levels
   available at the user port don't follow the RS232 standard.
 
@@ -201,7 +201,29 @@ does not exist).
 
 <sect1>Passing arguments to the program<p>
 
-Command line argument passing is currently not supported for the Plus/4.
+Command line arguments can be passed to <tt/main()/. Since this is not
+supported by BASIC, the following syntax was chosen:
+
+<tscreen><verb>
+    RUN:REM ARG1 " ARG2 IS QUOTED" ARG3 "" ARG5
+</verb></tscreen>
+
+<enum>
+<item>Arguments are separated by spaces.
+<item>Arguments may be quoted.
+<item>Leading and trailing spaces around an argument are ignored. Spaces within
+      a quoted argument are allowed.
+<item>The first argument passed to <tt/main/ is the program name.
+<item>A maximum number of 10 arguments (including the program name) are
+      supported.
+</enum>
+
+
+
+<sect1>Program return code<p>
+
+The program return code (low byte) is passed back to BASIC by use of the
+<tt/ST/ variable.
 
 
 <sect1>Interrupts<p>