diff --git a/README.md b/README.md
index afdcc0f..f7cdddf 100644
--- a/README.md
+++ b/README.md
@@ -199,6 +199,8 @@ The shortcut mnemonics for other operations are as follows:
 * `iva` is a shortcut to `cpy 2` (indirect value assignment)
 * `inc` is a shortcut to `fma 127 127` (increment)
 * `mul` is a shortcut to `fma 0` (multiplication)
+* `neg` is a shortcut to `sub 0 127` (negation)
+* `inv` is a shortcut to `div 127` (inversion/reciprocal)
 * `exp` is a shortcut to `nel 0` (natural exponent)
 * `log` is a shortcut to `nel 1` (natural logarithm)
 * `sin` is a shortcut to `tri 0` (sine)
diff --git a/mu808asm.py b/mu808asm.py
index aa4f28f..1d04ca8 100755
--- a/mu808asm.py
+++ b/mu808asm.py
@@ -39,6 +39,8 @@ jmpfunc_shorts = {
     'iva': 'cpy 2',       # indirect value assignment
     'inc': 'fma 127 127', # increment
     'mul': 'fma 0',       # multiplication
+    'neg': 'sub 0 127',   # negation
+    'inv': 'div 127',     # inversion/reciprocal
     'exp': 'nel 0',       # natural exponent
     'log': 'nel 1',       # natural logarithm
     'sin': 'tri 0',       # sine