;****************************************************************
;* Name of Project:						*
;* 								*
;****************************************************************

list P = 16F628		;microcontroller 
include <p16F628.inc>	;registers for F628


__Config 3F18h       	


;_cp_off & _lpv_off & _pwrte_off & _wdt_off & _intRC_oscI/O
;code protection - off
;low-voltage programming - off
;power-up timer -  off
;watchdog timer - off
;use internal RC for 4MHz - all pins for in-out




;****************************************************************
; Port definitions
;****************************************************************


PortA_Config	equ	0xf1	;bit7: in,in,in,in,out,out,out,in :bit0
PortB_Config	equ	0x0f	;bit7: out,out,out,out,in,in,in,in :bit0


;****************************************************************
; variables - these are sample names and files
;****************************************************************


		;Files for F628 start at 20h but to make programs easily 
		;  convertible from F84A to F628, we start at 20h. 
 
		;0Ch Not used  - so F84A programs can be converted to F628						;     "   ""     """    """
		;     "   ""     """    """			
		;1Fh  "   ""     """    """			

timera		equ	0x20	;general purpose timer
timerb		equ	0x21	;general purpose timer
timerc		equ	0x22	;general purpose timer
timerd		equ	0x23	;general purpose timer
key		equ	0x25	;key last pressed
steptemp	equ	0x27	;temporary step memory
stepsgood	equ	0x28	;number of steps 
Alarm_state	equ 	0x29	;contains alarm state
State_save	equ 	0x2A
Win_save	equ 	0x2B
tmr_Flg1	equ 	0x2C	;Register of  timer flags
tmr_Flg2	equ 	0x2D	;Register of more timer flags
Pulse_flgs	equ 	0X2E	;Pulse LED flags
mi_flgs		equ 	0x2F	;miscellaneous flags
count_clicks	equ 	0x30
table_i		equ 	0x31	;table index


;-------------Miscellaneous flags

flg_RAoff	equ 0	;Used to insure a double-click
flg_Zone2	equ 1	;Used to turn off motion detector (ZONE) 2
flg_Deboun	equ 2	;debouncing in progress
flg_Waita	equ 3	;timer-2 flags
flg_Waitb	equ 4	;  " 	   "
flg_Trig	equ 5	;  "       "
flg_Amp_On	equ 6
flg_TEMP_On	equ 7

;****************************************************************
;Beginning of program
;****************************************************************
reset:	org	0x00			;reset vector address	
	goto	SetUp			;goto SetUp
	nop
	nop
	nop
	ORG	4	;interrupts go to this location 
	GOTO	isr1	;Goto to Interrupt Service Routine 


;****************************************************************
;* port A and B initialisation					*
;****************************************************************

SetUp	bcf	status,rp1		;select bank 1 
	bsf	status,rp0
	
	movlw	PortA_Config		;PortA Configuration
	movwf	0x05			
	movlw	PortB_Config		;PortB Configuration
	movwf	0x06

	movlw	0x88			;Fosc/4;No prescaler
	movwf	option			;Timer configuration

	bcf	status,rp0		;select programming area - bank0 
	clrf 	0x05			;Clear Port A of junk 
	clrf 	0x06			;Clear Port B of junk 
	movlw	0x07			;turn comparators off and enable
	movwf	cmcon			;    pins for I/O functions
	goto 	Main



;****************************************************************
;* Tables go here						*
;****************************************************************

Table1	addwf 02,1
	retlw 0x08
	retlw 0x1A
	retlw 0xBE
	retlw 0xFF


;****************************************************************
;* Interrupt Service Routine goes here				*
;****************************************************************
isr1	movlw	0x80
	movwf	0x2A


;****************************************************************
;* Delay sub-routines go here 					*
;****************************************************************

Delay1	XXX		;Look at input line
	XXX		;Input LOW
	retlw 0x00


;****************************************************************
;* Main 							*
;****************************************************************

Main	XXX
	btfss 06,3	;Test the input line
	XXX
	XXX
	call Delay1
	XXX	
	bsf  0x06,0	;Make the lowest output HIGH
	XXX
	call Table1
	XXX
	goto Main

	END