{ "JMP",  0x0000808, 0x4c, 6, PutJMP },
         { "JSR",  0x0000008, 0x20, 7, PutAll },
         { "LAS",  0x0000200, 0xBB, 0, PutAll },         /* X */
-        { "LAX",  0x000A30C, 0xA3, 1, PutAll },         /* X */
+        { "LAX",  0x080A30C, 0xA3, 11, PutAll },        /* X */
         { "LDA",  0x080A26C, 0xa0, 0, PutAll },
         { "LDX",  0x080030C, 0xa2, 1, PutAll },
         { "LDY",  0x080006C, 0xa0, 1, PutAll },
 /* Table to build the effective 65xx opcode from a base opcode and an
 ** addressing mode. (The value in the table is ORed with the base opcode)
 */
-static unsigned char EATab[11][AM65I_COUNT] = {
+static unsigned char EATab[12][AM65I_COUNT] = {
     {   /* Table 0 */
         0x00, 0x00, 0x05, 0x0D, 0x0F, 0x15, 0x1D, 0x1F,
         0x00, 0x19, 0x12, 0x00, 0x07, 0x11, 0x17, 0x01,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
         0x00, 0x00, 0x00
     },
+    {   /* Table 11 (LAX) */
+        0x08, 0x08, 0x04, 0x0C, 0x00, 0x14, 0x1C, 0x00,
+        0x14, 0x1C, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,
+        0x00, 0x00, 0x80
+    },
 };
 
 /* Table to build the effective SWEET16 opcode from a base opcode and an
 
 
-all: chklegal.bin chkillegal.bin
+all: chklegal.bin chkillegal.bin chkall.bin
        @#
 
-.PHONY: chklegal.bin chkillegal.bin
+.PHONY: chklegal.bin chkillegal.bin chkall.bin
 
 chklegal.bin: legal.s
        ../../bin/cl65 --target none --cpu 6502X -o chklegal.bin legal.s
-       diff legal.ref chklegal.bin
+       diff -q legal.ref chklegal.bin || hex chklegal.bin
 
 chkillegal.bin: illegal.s
        ../../bin/cl65 --target none --cpu 6502X -o chkillegal.bin illegal.s
+       diff -q illegal.ref chkillegal.bin || hex chkillegal.bin
 
-ref: legal.s
+chkall.bin: all.s
+       ../../bin/cl65 --target none --cpu 6502X -o chkall.bin all.s
+
+ref: legal.s illegal.s
        ../../bin/cl65 --target none --cpu 6502X -o legal.ref legal.s
+       ../../bin/cl65 --target none --cpu 6502X -o illegal.ref illegal.s
 
 clean:
        rm -f legal.o chklegal.bin
        rm -f illegal.o chkillegal.bin
+       rm -f all.o chkall.bin
 
         .setcpu         "6502X"
 
+; all legal and illegal opcodes as they would be disassembled by da65
+; note that this would not assemble into the exact same binary
+
             brk                 ; 00
             ora ($12,x)         ; 01 12
             jam                 ; 02
             slo ($12,x)         ; 03 12
-            noop $12            ; 04 12
+            nop $12             ; 04 12
             ora $12             ; 05 12
             asl $12             ; 06 12
             slo $12             ; 07 12
             ora #$12            ; 09 12
             asl a               ; 0a
             anc #$12            ; 0b 12
-            noop $1234          ; 0c 34 12
+            nop $1234           ; 0c 34 12
             ora $1234           ; 0d 34 12
             asl $1234           ; 0e 34 12
             slo $1234           ; 0f 34 12
-            bpl $101c           ; 10 12
+            bpl *+$14           ; 10 12
             ora ($12),y         ; 11 12
             jam                 ; 12
             slo ($12),y         ; 13 12
-            noop $12,x          ; 14 12
+            nop $12,x           ; 14 12
             ora $12,x           ; 15 12
             asl $12,x           ; 16 12
             slo $12,x           ; 17 12
             clc                 ; 18
             ora $1234,y         ; 19 34 12
-            noop                ; 1a
+            nop                 ; 1a
             slo $1234,y         ; 1b 34 12
-            noop $1234,x        ; 1c 34 12
+            nop $1234,x         ; 1c 34 12
             ora $1234,x         ; 1d 34 12
             asl $1234,x         ; 1e 34 12
             slo $1234,x         ; 1f 34 12
             and $1234           ; 2d 34 12
             rol $1234           ; 2e 34 12
             rla $1234           ; 2f 34 12
-            bmi $107c           ; 30 12
+            bmi *+$14           ; 30 12
             and ($12),y         ; 31 12
             jam                 ; 32
             rla ($12),y         ; 33 12
-            noop $12,x          ; 34 12
+            nop $12,x           ; 34 12
             and $12,x           ; 35 12
             rol $12,x           ; 36 12
             rla $12,x           ; 37 12
             sec                 ; 38
             and $1234,y         ; 39 34 12
-            noop                ; 3a
+            nop                 ; 3a
             rla $1234,y         ; 3b 34 12
-            noop $1234,x        ; 3c 34 12
+            nop $1234,x         ; 3c 34 12
             and $1234,x         ; 3d 34 12
             rol $1234,x         ; 3e 34 12
             rla $1234,x         ; 3f 34 12
             eor ($12,x)         ; 41 12
             jam                 ; 42
             sre ($12,x)         ; 43 12
-            noop $12            ; 44 12
+            nop $12             ; 44 12
             eor $12             ; 45 12
             lsr $12             ; 46 12
             sre $12             ; 47 12
             pha                 ; 48
             eor #$12            ; 49 12
             lsr a               ; 4a
-            asr #$12            ; 4b 12
+            alr #$12            ; 4b 12
             jmp $1234           ; 4c 34 12
             eor $1234           ; 4d 34 12
             lsr $1234           ; 4e 34 12
             sre $1234           ; 4f 34 12
-            bvc $10dc           ; 50 12
+            bvc *+$14           ; 50 12
             eor ($12),y         ; 51 12
             jam                 ; 52
             sre ($12),y         ; 53 12
-            noop $12,x          ; 54 12
+            nop $12,x           ; 54 12
             eor $12,x           ; 55 12
             lsr $12,x           ; 56 12
             sre $12,x           ; 57 12
             cli                 ; 58
             eor $1234,y         ; 59 34 12
-            noop                ; 5a
+            nop                 ; 5a
             sre $1234,y         ; 5b 34 12
-            noop $1234,x        ; 5c 34 12
+            nop $1234,x         ; 5c 34 12
             eor $1234,x         ; 5d 34 12
             lsr $1234,x         ; 5e 34 12
             sre $1234,x         ; 5f 34 12
             adc ($12,x)         ; 61 12
             jam                 ; 62
             rra ($12,x)         ; 63 12
-            noop $12            ; 64 12
+            nop $12             ; 64 12
             adc $12             ; 65 12
             ror $12             ; 66 12
             rra $12             ; 67 12
             adc $1234           ; 6d 34 12
             ror $1234           ; 6e 34 12
             rra $1234           ; 6f 34 12
-            bvs $113c           ; 70 12
+            bvs *+$14           ; 70 12
             adc ($12),y         ; 71 12
             jam                 ; 72
             rra ($12),y         ; 73 12
-            noop $12,x          ; 74 12
+            nop $12,x           ; 74 12
             adc $12,x           ; 75 12
             ror $12,x           ; 76 12
             rra $12,x           ; 77 12
             sei                 ; 78
             adc $1234,y         ; 79 34 12
-            noop                ; 7a
+            nop                 ; 7a
             rra $1234,y         ; 7b 34 12
-            noop $1234,x        ; 7c 34 12
+            nop $1234,x         ; 7c 34 12
             adc $1234,x         ; 7d 34 12
             ror $1234,x         ; 7e 34 12
             rra $1234,x         ; 7f 34 12
-            noop #$12           ; 80 12
+            nop #$12            ; 80 12
             sta ($12,x)         ; 81 12
-            noop #$12           ; 82 12
+            nop #$12            ; 82 12
             sax ($12,x)         ; 83 12
             sty $12             ; 84 12
             sta $12             ; 85 12
             stx $12             ; 86 12
             sax $12             ; 87 12
             dey                 ; 88
-            noop #$12           ; 89 12
+            nop #$12            ; 89 12
             txa                 ; 8a
             ane #$12            ; 8b 12
             sty $1234           ; 8c 34 12
             sta $1234           ; 8d 34 12
             stx $1234           ; 8e 34 12
             sax $1234           ; 8f 34 12
-            bcc $119c           ; 90 12
+            bcc *+$14           ; 90 12
             sta ($12),y         ; 91 12
             jam                 ; 92
             sha ($12),y         ; 93 12
             tay                 ; a8
             lda #$12            ; a9 12
             tax                 ; aa
-            lxa #$12            ; ab 12
+            lax #$12            ; ab 12
             ldy $1234           ; ac 34 12
             lda $1234           ; ad 34 12
             ldx $1234           ; ae 34 12
             lax $1234           ; af 34 12
-            bcs $11fc           ; b0 12
+            bcs *+$14           ; b0 12
             lda ($12),y         ; b1 12
             jam                 ; b2
             lax ($12),y         ; b3 12
             lax $1234,y         ; bf 34 12
             cpy #$12            ; c0 12
             cmp ($12,x)         ; c1 12
-            noop #$12           ; c2 12
+            nop #$12            ; c2 12
             dcp ($12,x)         ; c3 12
             cpy $12             ; c4 12
             cmp $12             ; c5 12
             iny                 ; c8
             cmp #$12            ; c9 12
             dex                 ; ca
-            sbx #$12            ; cb 12
+            axs #$12            ; cb 12
             cpy $1234           ; cc 34 12
             cmp $1234           ; cd 34 12
             dec $1234           ; ce 34 12
             dcp $1234           ; cf 34 12
-            bne $125c           ; d0 12
+            bne *+$14           ; d0 12
             cmp ($12),y         ; d1 12
             jam                 ; d2
             dcp ($12),y         ; d3 12
-            noop $12,x          ; d4 12
+            nop $12,x           ; d4 12
             cmp $12,x           ; d5 12
             dec $12,x           ; d6 12
             dcp $12,x           ; d7 12
             cld                 ; d8
             cmp $1234,y         ; d9 34 12
-            noop                ; da
+            nop                 ; da
             dcp $1234,y         ; db 34 12
-            noop $1234,x        ; dc 34 12
+            nop $1234,x         ; dc 34 12
             cmp $1234,x         ; dd 34 12
             dec $1234,x         ; de 34 12
             dcp $1234,x         ; df 34 12
             cpx #$12            ; e0 12
             sbc ($12,x)         ; e1 12
-            noop #$12           ; e2 12
-            isb ($12,x)         ; e3 12
+            nop #$12            ; e2 12
+            isc ($12,x)         ; e3 12
             cpx $12             ; e4 12
             sbc $12             ; e5 12
             inc $12             ; e6 12
-            isb $12             ; e7 12
+            isc $12             ; e7 12
             inx                 ; e8
             sbc #$12            ; e9 12
             nop                 ; ea
-            usbc #$12           ; eb 12
+            sbc #$12            ; eb 12
             cpx $1234           ; ec 34 12
             sbc $1234           ; ed 34 12
             inc $1234           ; ee 34 12
-            isb $1234           ; ef 34 12
-            beq $12bc           ; f0 12
+            isc $1234           ; ef 34 12
+            beq *+$14           ; f0 12
             sbc ($12),y         ; f1 12
             jam                 ; f2
-            isb ($12),y         ; f3 12
-            noop $12,x          ; f4 12
+            isc ($12),y         ; f3 12
+            nop $12,x           ; f4 12
             sbc $12,x           ; f5 12
             inc $12,x           ; f6 12
-            isb $12,x           ; f7 12
+            isc $12,x           ; f7 12
             sed                 ; f8
             sbc $1234,y         ; f9 34 12
-            isb $1234,y         ; fb 34 12
-            noop $1234,x        ; fc 34 12
+            isc $1234,y         ; fb 34 12
+            nop $1234,x         ; fc 34 12
             sbc $1234,x         ; fd 34 12
             inc $1234,x         ; fe 34 12
-            isb $1234,x         ; ff 34 12
+            isc $1234,x         ; ff 34 12