diff --git a/src/main/fragment/mos6502-common/vwum1=_word_pbum2_derefidx_vbuyy.asm b/src/main/fragment/mos6502-common/vwum1=_word_pbum2_derefidx_vbuyy.asm
new file mode 100644
index 000000000..9db7d1fd9
--- /dev/null
+++ b/src/main/fragment/mos6502-common/vwum1=_word_pbum2_derefidx_vbuyy.asm
@@ -0,0 +1,8 @@
+lda {m2}
+sta $fe
+lda {m2}+1
+sta $ff
+lda ($fe),y
+sta {m1}
+lda #0
+sta {m1}+1