; CC5X Version 3.4B, Copyright (c) B Knudsen Data
; C compiler for the PICmicro family
; ************   4. Mar 2010  15:52  *************

	processor  16F877A
	radix  DEC

	__config 0x9

TMR0        EQU   0x01
STATUS      EQU   0x03
PCLATH      EQU   0x0A
PS0         EQU   0
PS1         EQU   1
PS2         EQU   2
PSA         EQU   3
T0CS        EQU   5
Carry       EQU   0
Zero_       EQU   2
RP0         EQU   5
RP1         EQU   6
INTF        EQU   1
T0IF        EQU   2
T0IE        EQU   5
GIE         EQU   7
PORTC       EQU   0x07
TRISC       EQU   0x87
x           EQU   0x22
pin2        EQU   2
pin3        EQU   3
svrWREG     EQU   0x70
svrSTATUS   EQU   0x20
svrPCLATH   EQU   0x21

	GOTO main

  ; FILE main.c
			;#include "int16CXX.H"
			;int16 x;
			;#pragma bit pin0 @ PORTC.0
			;#pragma bit pin1 @ PORTC.1
			;#pragma bit pin2 @ PORTC.2
			;#pragma bit pin3 @ PORTC.3
			;#pragma bit pin4 @ PORTC.4
			;#pragma bit pin5 @ PORTC.5
			;#pragma bit pin6 @ PORTC.6
			;#pragma bit pin7 @ PORTC.7
			;
			;#pragma origin 4
	ORG 0x0004
			;interrupt int_server(void)
			;{ 
int_server
			;	int_save_registers    // W, STATUS (and PCLATH)
	MOVWF svrWREG
	SWAPF STATUS,W
	BCF   0x03,RP0
	BCF   0x03,RP1
	MOVWF svrSTATUS
	MOVF  PCLATH,W
	MOVWF svrPCLATH
	CLRF  PCLATH
			;		if(T0IF) 
	BTFSS 0x0B,T0IF
	GOTO  m003
			;		{
			;			if (pin3==1)
	BTFSS 0x07,pin3
	GOTO  m001
			;		    	pin3=0;
	BCF   0x07,pin3
			;			else 
	GOTO  m002
			;			    pin3=1;
m001	BCF   0x03,RP0
	BCF   0x03,RP1
	BSF   0x07,pin3
			;		    
			;			INTF = 0;	  /* reset flag */
m002	BCF   0x0B,INTF
			;			
			;		}
			;	int_restore_registers // W, STATUS (and PCLATH)
m003	BCF   0x03,RP0
	BCF   0x03,RP1
	MOVF  svrPCLATH,W
	MOVWF PCLATH
	SWAPF svrSTATUS,W
	MOVWF STATUS
	SWAPF svrWREG,1
	SWAPF svrWREG,W
			;}
	RETFIE
			;
			;
			;
			;void main( void)
			;{ 
main
			;    #pragma config WDTE=off, FOSC=XT, PWRTE=1, BODEN=off   //watchdog timer=off, oscilattor is= extern <=4MHZ, Power up timer = on, Brown out detect = off. 
			;	
			;	PORTC = 	0b.0000.0000; 
	BCF   0x03,RP0
	BCF   0x03,RP1
	CLRF  PORTC
			;    TRISC =  	0b.0000.0000;
	BSF   0x03,RP0
	CLRF  TRISC
			;
			;	T0CS=0; 	// T0CS: TMR0 Clock Source Select bit: 1 = Transition on T0CKI pin, 0 = Internal instruction cycle clock (CLKO)
	BCF   0x81,T0CS
			;	PSA=0;		// PSA: Prescaler Assignment bit: 1 = Prescaler is assigned to the WDT 0 = Prescaler is assigned to the Timer0 module
	BCF   0x81,PSA
			;	PS0=0;		// PS2:PS0: Prescaler Rate Select bits
	BCF   0x81,PS0
			;	PS1=1;		// PS2:PS0: Prescaler Rate Select bits
	BSF   0x81,PS1
			;	PS2=1;		// PS2:PS0: Prescaler Rate Select bits
	BSF   0x81,PS2
			;
			;
			;
			;	T0IE = 1;   /* enable TMR0 interrupt */
	BSF   0x0B,T0IE
			;  	GIE = 1;    /* interrupts allowed */
	BSF   0x0B,GIE
			;	
			;
			;while(1)
			;{
			;
			;       		x=TMR0;
m004	BCF   0x03,RP0
	BCF   0x03,RP1
	MOVF  TMR0,W
	MOVWF x
	CLRF  x+1
			;		if(x<=128) pin2=1;
	BTFSC x+1,7
	GOTO  m005
	MOVF  x+1,W
	BTFSS 0x03,Zero_
	GOTO  m006
	MOVLW 129
	SUBWF x,W
	BTFSC 0x03,Carry
	GOTO  m006
m005	BCF   0x03,RP0
	BCF   0x03,RP1
	BSF   0x07,pin2
			;		//if(x==255) pin2=0;
			;		else pin2=0;
	GOTO  m004
m006	BCF   0x03,RP0
	BCF   0x03,RP1
	BCF   0x07,pin2
			;
			;
			;
			;}
	GOTO  m004

	END


; *** KEY INFO ***

; 0x0004 P0   27 word(s)  1 % : int_server
; 0x001F P0   34 word(s)  1 % : main

; RAM usage: 5 bytes (3 local), 363 bytes free
; Maximum call level: 0 (+1 for interrupt)
;  Codepage 0 has   62 word(s) :   3 %
;  Codepage 1 has    0 word(s) :   0 %
;  Codepage 2 has    0 word(s) :   0 %
;  Codepage 3 has    0 word(s) :   0 %
; Total of 62 code words (0 %)