Added some fragments.

src/main/fragment/mos6502-common/(qbuc1_derefidx_vbuxx)_derefidx_vbuc2=vbuaa.asm

@@ -0,0 +1,6 @@
+ldy {c1},x
+sty $fe
+ldy {c1}+1,x
+sty $ff
+ldy #{c2}
+sta ($fe),y

src/main/fragment/mos6502-common/vbuaa=pbuc1_derefidx_(pbuz1_derefidx_vbuc2)_bor_pbuc3_derefidx_(pbuz1_derefidx_vbuc4).asm

@@ -0,0 +1,10 @@
+ldy #{c2}
+lda ({z1}),y
+tay
+lda {c1},y
+sta $ff
+ldy #{c4}
+lda ({z1}),y
+tay
+lda {c3},y
+ora $ff

src/main/fragment/mos6502-common/vbuaa=pbuc1_derefidx_(pbuz1_derefidx_vbuyy)_band_vbuc2.asm

@@ -0,0 +1,4 @@
+lda ({z1}),y
+tay
+lda {c1},y
+and #{c2}

src/main/fragment/mos6502-common/vbuaa=vbuaa_rol_6.asm

@@ -1,6 +1,4 @@
-asl
+ror
-asl
+ror
-asl
+ror
-asl
+and #$c0
-asl
-asl