added more stubs, updated documentation

c64/basic/ab1e.strout.s

@@ -0,0 +1,34 @@
+// Print string at $YYAA
+// Compute's Mapping the 64 p101
+
+// print string routine
+
+STROUT:
+	// Setup pointer
+	sty temp_string_ptr+1
+	sta temp_string_ptr+0
+
+	txa	
+	pha
+
+	// Get offset ready
+	ldy #$00
+!:
+	// Save Y in X, since X is preserved by chrout, but Y is not
+	tya
+	tax
+
+	lda (temp_string_ptr),y
+	beq !+
+
+	jsr JCHROUT
+
+	txa
+	tay
+
+	iny
+	bne !-
+!:
+	pla
+	tax
+	rts