diff --git a/src/main/fragment/mos6502-common/vwsm1_lt__deref_pwsc1_then_la1.asm b/src/main/fragment/mos6502-common/vwsm1_lt__deref_pwsc1_then_la1.asm
new file mode 100644
index 000000000..a93401c7e
--- /dev/null
+++ b/src/main/fragment/mos6502-common/vwsm1_lt__deref_pwsc1_then_la1.asm
@@ -0,0 +1,8 @@
+lda {m1}
+cmp {c1}
+lda {m1}+1
+sbc {c1}+1
+bvc !+
+eor #$80
+!:
+bmi {la1}