diff --git a/STATUS.md b/STATUS.md
index 10c217d9..6e2776f6 100644
--- a/STATUS.md
+++ b/STATUS.md
@@ -197,11 +197,9 @@ Floating point mathematical routines - not official, but well known and broadly
 | `$B86A`   | `add_FAC2_FAC1`        | DONE     |                                                    |
 | `$B8FE`   | `normal_FAC1`          | DONE     |                                                    |
 | `$B947`   | `inv_FAC1_mantissa`    | NOT DONE |                                                    |
-| `$B983`   | `MULSHF`               | NOT DONE |                                                    |
 | `$B9EA`   | `log_FAC1`             | NOT DONE |                                                    |
 | `$BA28`   | `mul_MEM_FAC1`         | PARTIAL  | needs `mul_FAC2_FAC1`                              |
 | `$BA2B`   | `mul_FAC2_FAC1`        | NOT DONE | some work started                                  |
-| `$BA59`   | `MLTPLY`               | NOT DONE |                                                    |
 | `$BA8C`   | `mov_MEM_FAC2`         | DONE     |                                                    |
 | `$BA90`   | `get_FAC2_via_INDEX`   | NOT DONE |                                                    |
 | `$BAE2`   | `mul10_FAC1`           | NOT DONE |                                                    |
diff --git a/c64/basic/,stubs_math/b983.MULSHF.s b/c64/basic/,stubs_math/b983.MULSHF.s
deleted file mode 100644
index b4389b13..00000000
--- a/c64/basic/,stubs_math/b983.MULSHF.s
+++ /dev/null
@@ -1,18 +0,0 @@
-// #LAYOUT# STD *       #TAKE
-// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
-// #LAYOUT# *   BASIC_0 #TAKE
-// #LAYOUT# *   *       #IGNORE
-
-//
-// Math package - SHIFT routine
-//
-// See also:
-// - [CM64] Computes Mapping the Commodore 64 - page 113
-//
-
-// XXX implement, test
-
-
-MULSHF:
-
-	STUB_IMPLEMENTATION()
diff --git a/c64/basic/,stubs_math/b983.interop b/c64/basic/,stubs_math/b983.interop
deleted file mode 100644
index 0d18777c..00000000
--- a/c64/basic/,stubs_math/b983.interop
+++ /dev/null
@@ -1,3 +0,0 @@
-This is an important floating point math routine, documented in many places.
-
-XXX - try to find real-life example
diff --git a/c64/basic/,stubs_math/ba59.MLTPLY.s b/c64/basic/,stubs_math/ba59.MLTPLY.s
deleted file mode 100644
index 294cd246..00000000
--- a/c64/basic/,stubs_math/ba59.MLTPLY.s
+++ /dev/null
@@ -1,18 +0,0 @@
-// #LAYOUT# STD *       #TAKE
-// #LAYOUT# X16 BASIC_0 #TAKE-OFFSET 2000
-// #LAYOUT# *   BASIC_0 #TAKE
-// #LAYOUT# *   *       #IGNORE
-
-//
-// Math package - add a mantissa byte of FAC2 to FAC1, do it .A times
-//
-// See also:
-// - [CM64] Computes Mapping the Commodore 64 - page 113
-//
-
-// XXX implement, test
-
-
-MULTPLY:
-
-	STUB_IMPLEMENTATION()
diff --git a/c64/basic/,stubs_math/ba59.interop b/c64/basic/,stubs_math/ba59.interop
deleted file mode 100644
index 0d18777c..00000000
--- a/c64/basic/,stubs_math/ba59.interop
+++ /dev/null
@@ -1,3 +0,0 @@
-This is an important floating point math routine, documented in many places.
-
-XXX - try to find real-life example