compile assemble to C- code ?

[BigT]

I'm new to the world of C and try to start walking. I have below code in assemble language and would like to compile it in C. Can someone let me know how to and/ or do it?

; set processor option ..........................

	Processor 16F84
	
; Register Label Equates..........................
PCL		EQU		02	; Program counter
PORTA	EQU		05		; Port A 
PORTB	EQU		06		; Port B 
Count 	EQU		0C		; Counter (1-6)

; Register Bit Label Equates......................
Roll 	EQU		4		; Push Button Input

; Start Program...................................

;Initialize (Default = Input)
MOVLW	b'00000001'		; Define RB1-7 outputs
TRIS	PORTB			; and set bit
GOTO 	reload			; jump to main program

; Table subroutine................................
table 	MOVF	Count,W	; Put count in W
		ADDWF	PCL	; Add to Programm Counter 
		NOP	
		RETLW	00C		; Display 1
		RETLW	0B6		; Display 2
		RETLW	09E		; Display 3
		RETLW	0CC		; Display 4
		RETLW	0DA		; Display 5
		RETLW	0FA		; Display 6

; Main Loop.......................................
reload	MOVLW	06		; Reset counter 
		MOVF	Count	; to 6
		
start	BTFSC	PORTA,Roll	;Test button
		GOTO	nexnum		; Jump if not presseed 
		CALL	table		; get display code 
		MOVWF	PORTB		; Output isplay Code
		GOTO	start		; start again
		
nexnum	DECFSZ	Count		; Dec & Tets Count = 0?
		GOTO	start		; start again 
		GOTO 	reload		; restart count if zero
		
		END

Thanks for all your help in advance,
T

[weaknessforcats]

There are various disassemblers around. Google is your best bet. Of course, you will lose all the comments and the variable names.

If I knew what trhe assembly does, I would just learn enough C to write it myself and skip the disassembler.

[Banfa]

Please use code tags it makes you code easier to read.

So this is a PIC micro-processor right? It looks like PIC assembler and I believe 16F84 is a PIC part. It looks like Port A is being configured as an input and the comment indicates an attached button and port B as an output, from the ouput values I would guess port B is connected to a 7 segment LED (or LCD?) digit display.

Everytime the button is pressed it displays the next digit in sequence 1, 2, 3, 4, 5, 6 on the display looping back from 6 to 1.

I doubt you will be able to find a dis-assembler to convert back to C, this looks to me to be directly written in assembler and is pulling tricks (in the table sub-routine) that are unlikely to have a conversion to C, that is directly altering the program counter to cause the program to execute a different return instruction to return a different value from the function.

However the function of the program is so simple that I would have thought re-writing it in C would be a fairly simple matter even for someone with limited C experience.

[BigT]

Thanks for taking the time and sending me some answers. Yes it is for a PIC 16F84 processor. I'll google and see if i find something. I'm not concerned loosing the text or comments.
The problem is i got pretty much no knowledge of C. I learned assemble language but that is processor specific. I'll hit the books hard and see if i can put something together since Banfa said its a pretty easy routine.

[weaknessforcats]

The problem is i got pretty much no knowledge of C.

C is a replacement for assembly language. You can learn C over a weekend. There are only 43 operators.

If you keep your code simple you will be amazed how much you can do in a very short time. It is truly faster to write C than to write assembly.

[Banfa]

If you keep your code simple you will be amazed how much you can do in a very short time. It is truly faster to write C than to write assembly.

Not to mention once you know it you will be able to program for any microprocessor with a C compiler which nowadays most of them do have (if not a C++ compiler).

[BigT]

Thanks again. Please close this post and i'll check back if get lost writing C with some code questions.

T