add more routine descriptions, begin documenting why each is needed

2019-04-17 05:03:13 +09:30
1 parent c336252105
commit dab82edfc8
@@ -0,0 +1,6 @@
+; $FFF0 - Get/Set cursor location vector
+; (http://codebase64.org/doku.php?id=base:kernalreference)
+; To set: C=0, to get, C=1
+; X=row, Y=column
+
+	.word plot