more sane directory name, updated binaries

src/basic/,stubs_math/b1aa.FACINX.s

@@ -0,0 +1,21 @@
+// #LAYOUT# STD *       #TAKE
+// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
+// #LAYOUT# *   BASIC_0 #TAKE
+// #LAYOUT# *   *       #IGNORE
+
+//
+// Math package - convert FAC1 to 16-bit signed integer
+//
+// Input:
+// - .A - address low byte
+// - .Y - address high byte
+//
+// See also:
+// - [CM64] Computes Mapping the Commodore 64 - page 105
+// - https://www.c64-wiki.com/wiki/Floating_point_arithmetic
+//
+
+// XXX provide implementation
+
+FACINX:
+	STUB_IMPLEMENTATION()