PIC16C5x Disassembler

PIC16C5x Disassembler

Microchip PIC16C54/C55/C56/C57/C58 Processors supported

C O N T E N T S

Program Features
Demonstration
Program Documentation
How to order

L I N K S

Microchip Technology Inc.

C O N T A C T

Arsen Torbarina
Skokov prilaz 2
HR-10020 Zagreb, Utrine
CROATIA

e-mail: mymail@mail.com

USING THE DIS16 DISASSEMBLER

This example shows how DIS16 disassembles a HEX file downloaded from a microcontroller. The generated ASM file contains the assembler source, the LST file contains both assembler and HEX code, and the ERR file contains the messages generated during the process.

C:\DIS16>dis16 demo
Disassembling: DEMO.HEX Void code = 0x000
1 warning(s) encountered!
C:\DIS16>_

Figure 2. Disassembling is completed

C:\DIS16>dis16 demo_

Figure 1. Running the disassembler

C:\DIS16>dir demo.*
DEMO     HEX     313 Show it!
DEMO     ASM   1.096 Show it!
DEMO     ERR      53 Show it!
DEMO     LST   2.968 Show it!
        4 file(s)     4.430 bytes C:\DIS16>_

Figure 3. Generated files

GENERATED FILES

Press to reset the listings.

DEMO.ERR - This file contains all the ERROR and WARNING messages generated during the process:

WARNING: No processor specified - PIC16C57 presumed

DEMO.HEX - Input file containing the code downloaded from the microcontroller. DIS16 supports 8-bit HEX format, 16-bit HEX format, Intel Split HEX format and Raw BIN format.

:10000000060A68000506020A16092A0003042803E6
:1000100005061609EA02060A0008290065070E0A05
:100020000602600E230150092A0000081E0C180A5F
:100030002B00EB02190A0008FF0C05000600070060
:10004000090C050065050709740C0D090709190A53
:0800A0008F0C63012A00010826
:0804A0008F0C63012800020823
:020FFE001C0ACB
:00000001FF

DEMO.ASM - Disassembled source in MPASM assembler format. DIS16 can detect unreachable parts of a code and multiple-page jumps (see the CALL 0x050 instruction below the L00E label).

; ----------- Generated by DIS16 v1.10 Disassembler -----------

	PROCESSOR	16C57	; WARNING - Presumed value!

W	EQU	0
F	EQU	1
C	EQU	0
STATUS	EQU	0x03
PORTA	EQU	0x05
PORTB	EQU	0x06
PORTC	EQU	0x07
F08	EQU	0x08
F09	EQU	0x09
F0A	EQU	0x0A
F0B	EQU	0x0B

	ORG	0x000

; Unreachable code
L000	GOTO	L006
L001	CLRF	F08
L002	BTFSC	PORTA,0
	GOTO	L002
	CALL	L016
	MOVWF	F0A
; End of unreachable code

L006	BCF	STATUS,C
L007	RRF	F08,F
	BTFSC	PORTA,0
	CALL	L016
	DECFSZ	F0A,F
	GOTO	L006
	RETLW	0x00
L00D	MOVWF	F09
L00E	BTFSS	PORTA,3
	GOTO	L00E
	MOVF	PORTB,W
	ANDLW	0x60
	IORWF	STATUS,F
	CALL	0x050	; Could be L050 L250
	MOVWF	F0A
	RETLW	0x00
L016	MOVLW	0x1E
	GOTO	L018
L018	MOVWF	F0B
L019	DECFSZ	F0B,F
	GOTO	L019
	RETLW	0x00
L01C	MOVLW	0xFF
	TRIS	PORTA
	TRIS	PORTB
	TRIS	PORTC
	MOVLW	0x09
	TRIS	PORTA
	BSF	PORTA,3
	CALL	L007
	MOVLW	0x74
	CALL	L00D
	CALL	L007
	GOTO	L019

	ORG	0x050
L050	MOVLW	0x8F
	ANDWF	STATUS,F
	MOVWF	F0A
	RETLW	0x01

	ORG	0x250
L250	MOVLW	0x8F
	ANDWF	STATUS,F
	MOVWF	F08
	RETLW	0x02

	ORG	0x7FF
	GOTO	L01C

	END

DEMO.LST - Disassembled listing containing line number, HEX code and symbolic names of instructions. DIS16 can detect unreachable parts of a code and multiple-page jumps (see line 41).

                   0001 ; ----------- Generated by DIS16 v1.10 Disassembler -----------
                   0002 
                   0003 	PROCESSOR	16C57	; WARNING - Presumed value!
                   0004 
  0000             0005 W	EQU	0
  0001             0006 F	EQU	1
  0000             0007 C	EQU	0
  0003             0008 STATUS	EQU	0x03
  0005             0009 PORTA	EQU	0x05
  0006             0010 PORTB	EQU	0x06
  0007             0011 PORTC	EQU	0x07
  0008             0012 F08	EQU	0x08
  0009             0013 F09	EQU	0x09
  000A             0014 F0A	EQU	0x0A
  000B             0015 F0B	EQU	0x0B
                   0016 
                   0017 	ORG	0x000
                   0018 
                   0019 ; Unreachable code
0000 0A06          0020 L000	GOTO	L006
0001 0068          0021 L001	CLRF	F08
0002 0605          0022 L002	BTFSC	PORTA,0
0003 0A02          0023 	GOTO	L002
0004 0916          0024 	CALL	L016
0005 002A          0025 	MOVWF	F0A
                   0026 ; End of unreachable code
                   0027 
0006 0403          0028 L006	BCF	STATUS,C
0007 0328          0029 L007	RRF	F08,F
0008 0605          0030 	BTFSC	PORTA,0
0009 0916          0031 	CALL	L016
000A 02EA          0032 	DECFSZ	F0A,F
000B 0A06          0033 	GOTO	L006
000C 0800          0034 	RETLW	0x00
000D 0029          0035 L00D	MOVWF	F09
000E 0765          0036 L00E	BTFSS	PORTA,3
000F 0A0E          0037 	GOTO	L00E
0010 0206          0038 	MOVF	PORTB,W
0011 0E60          0039 	ANDLW	0x60
0012 0123          0040 	IORWF	STATUS,F
0013 0950          0041 	CALL	0x050	; Could be L050 L250
0014 002A          0042 	MOVWF	F0A
0015 0800          0043 	RETLW	0x00
0016 0C1E          0044 L016	MOVLW	0x1E
0017 0A18          0045 	GOTO	L018
0018 002B          0046 L018	MOVWF	F0B
0019 02EB          0047 L019	DECFSZ	F0B,F
001A 0A19          0048 	GOTO	L019
001B 0800          0049 	RETLW	0x00
001C 0CFF          0050 L01C	MOVLW	0xFF
001D 0005          0051 	TRIS	PORTA
001E 0006          0052 	TRIS	PORTB
001F 0007          0053 	TRIS	PORTC
0020 0C09          0054 	MOVLW	0x09
0021 0005          0055 	TRIS	PORTA
0022 0565          0056 	BSF	PORTA,3
0023 0907          0057 	CALL	L007
0024 0C74          0058 	MOVLW	0x74
0025 090D          0059 	CALL	L00D
0026 0907          0060 	CALL	L007
0027 0A19          0061 	GOTO	L019
                   0062 
                   0063 	ORG	0x050
0050 0C8F          0064 L050	MOVLW	0x8F
0051 0163          0065 	ANDWF	STATUS,F
0052 002A          0066 	MOVWF	F0A
0053 0801          0067 	RETLW	0x01
                   0068 
                   0069 	ORG	0x250
0250 0C8F          0070 L250	MOVLW	0x8F
0251 0163          0071 	ANDWF	STATUS,F
0252 0028          0072 	MOVWF	F08
0253 0802          0073 	RETLW	0x02
                   0074 
                   0075 	ORG	0x7FF
07FF 0A1C          0076 	GOTO	L01C
                   0077 
                   0078 	END