diff --git a/disassembler/README.MD b/disassembler/README.MD
index f0c8f75..d347628 100644
--- a/disassembler/README.MD
+++ b/disassembler/README.MD
@@ -9,10 +9,70 @@ Typical command line ([*] = optional):
 **Usage**
 
 ```
-x65dsasm code.bin [disassembly.txt] [options]
+x65dsasm binary disasm.txt [$skip[-$end]] [addr=$xxxx] [cpu=6502/65C02/65816] [mx=0-3] [src]
 ```
 
-* $(hex start)-$(hex end)
-* cpu=[65816/65C02/6502]
-* addr=$(hex address to disassemble at)
-* mx=[0/1/2/3] (65816 accumulator / index immedate size)
+* binary: file which contains some 65xx series instructions
+* disasm.txt: output file (default is stdout)
+* $skip-$end: first byte offset to disassemble to last byte offset to disassemble
+* addr: disassemble as if loaded at addr
+* cpu: set which cpu to disassemble for (default is 6502)
+* mx: set the mx flags which control accumulator and index register size
+
+
+Sample output:
+
+```
+; -------------------------------- ;
+
+; Referenced from Label_14 + $7 (subroutine)
+; Referenced from Label_14 + $c (subroutine)
+Label_11:
+  lda $03,x
+  bpl Label_13
+; Referenced from Label_14 + $18 (subroutine)
+Label_12:
+  sec 
+  lda #$00
+  sbc $00,x
+  sta $00,x
+  lda #$00
+  sbc $01,x
+  sta $01,x
+  lda #$00
+  sbc $02,x
+  sta $02,x
+  lda #$00
+  sbc $03,x
+  sta $03,x
+; Referenced from Label_11 + $2 (branch)
+Label_13:
+  rts 
+
+; -------------------------------- ;
+
+; Referenced from Label_1 + $1e (subroutine)
+; Referenced from Label_16 + $1 (subroutine)
+; Referenced from Label_24 + $b (subroutine)
+; Referenced from Label_28 + $b (subroutine)
+Label_14:
+  lda $f7
+  eor $f3
+```
+
+
+```
+  lda #$e4
+  jsr Label_16
+  bne Label_27
+  beq Label_27
+; Referenced from Label_28 + $29 (branch)
+Label_29:
+  rts 
+
+; -------------------------------- ;
+
+; Referenced from Label_24 + $0 (data)
+Label_30:
+  dc.b $55, $55, $d5, $ff, $22, $22, $02, $00, $ff, $f2, $ff, $ff, $2e, $00, $00, $00
+```
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