diff --git a/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_6.asm b/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_6.asm
index 67a65890a..a920cddaa 100644
--- a/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_6.asm
+++ b/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_6.asm
@@ -1,6 +1,4 @@
-lsr
-lsr
-lsr
-lsr
-lsr
-lsr
\ No newline at end of file
+rol
+rol
+rol
+and #$02
\ No newline at end of file
diff --git a/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_7.asm b/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_7.asm
index e1223837f..046db7a00 100644
--- a/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_7.asm
+++ b/src/main/fragment/mos6502-common/vbuaa=vbuaa_ror_7.asm
@@ -1,7 +1,3 @@
-lsr
-lsr
-lsr
-lsr
-lsr
-lsr
-lsr
\ No newline at end of file
+rol
+rol
+and #$01
\ No newline at end of file
diff --git a/src/main/fragment/mos6502-undoc/vbuaa=vbuaa_ror_7.asm b/src/main/fragment/mos6502-undoc/vbuaa=vbuaa_ror_7.asm
new file mode 100644
index 000000000..c2dd1ce83
--- /dev/null
+++ b/src/main/fragment/mos6502-undoc/vbuaa=vbuaa_ror_7.asm
@@ -0,0 +1,2 @@
+anc #$80
+rol
\ No newline at end of file