Hello world sample file for MIDAS.

doc/hello-midas.md

@@ -37,3 +37,5 @@ Step by step guide on how to create a hello world in MIDAS.
 6. Run the program.
 
        :hello
+
+The sample program can be found in the HELLO directory.

src/hello/hello.mid

@@ -0,0 +1,17 @@
+title hello
+
+a==1				;Define two accumulators,
+b==2				;A and B.
+ch==1				;Output channel number.
+
+start:	.open ch,[.uao,,'tty]	;Open channel to TTY, for ASCII output.
+	 .lose
+	move a,[440700,,hello]	;Load A with byte pointer to string.
+loop:	ildb b,a		;Load B from string.
+	jumpe b,[.logout 2,]	;End on zero byte.
+	.iot ch,b		;Print byte.
+	    jrst loop
+
+hello:	asciz /hello world/
+
+end start			;Specify entry point.