How to set or clear individual bit of a register of PIC in asm code?

# define LDE PORTB,0

BSF  LED

BCF LED

led   equ   0x01

BSF  PORTB,led

	list      p=16f628A           ; list directive to define processor
	#include <p16F628A.inc>       ; processor specific variable definitions

	errorlevel  -302              ; suppress message 302 from list file

	__CONFIG   _CP_OFF & _CPD_OFF & _LVP_OFF & _BOREN_ON & _MCLRE_OFF & _WDT_ON & _PWRTE_ON & _HS_OSC

;***** PIN DEFINITIONS
#define BEEP		PORTA,0		;Output
#define HITAG_GREEN	PORTA,1		;Input, low when tag present
#define HITAG_CTS	PORTA,2		;Input, low when Hitag accepting commands
#define DATA_TO_HITAG	PORTA,3		;Output, 9600 bauds data to Hitag module
#define DEBUGPIN	PORTA,4		;note OD output!
#define DATA_FROM_HITAG	PORTB,0		;Input, 9600 bauds data from Hitag module
#define RX		PORTB,1		;Input, 38,400 bauds data from host
#define TX		PORTB,2		;Output, 38,400 bauds data to host
#define BUS_EN		PORTB,3		;Output, high to enable bus transmitter
#define MBX		PORTB,4		;Input, low when mailbox lid lifted
#define DOORBELL	PORTB,5		;Input, low when doorbell button is pressed
#define GATE_LED	PORTB,6		;Output, high to enable gate LED
#define UNLOCK		PORTB,7		;Output, high to open the gate lock

main
	clrf	Events
	clrf	HWStatus
	bcf	UNLOCK			;must be locked at power up.
	clrf	RelockTimer
	clrf	BeepTimer		;silent at power up
	clrf	BellLockoutTimer
	bcf	GATE_LED		;light off at power up
	call	BusTxPrepare
	movlw	BusRxBuffer
	movwf	BusRxPtr		;point to start of buffer
	call	HitagSetup

	LCD_Out(4,1,"Working?");

	asm("bsf LED");
       
	while(1)
	{
		asm("clrwdt");
	}
	
	return (0);

#include <xc.h>
#include "eeprom_routines.h"
#include <string.h>
#include <stdio.h>



#pragma config FOSC=HS, WDTE=ON, PWRTE = ON, MCLRE_ON, CP=OFF, CPD=OFF, BOREN=ON, CLKOUTEN=OFF, IESO=OFF, FCMEN=OFF
#pragma config WRT=OFF, PLLEN=OFF, STVREN=ON, BORV=HI, LVP=OFF

//***** SYSTEM CONSTANTS
#define _XTAL_FREQ 19660800
#define    BaudRate 38400
#define BRGVALUE (_XTAL_FREQ / (BaudRate * 64)) -1  //for BRGH = 0


//***** PIN DEFINITIONS
#define CLK5730        PORTAbits,RA0        //Output, clock to STV5730
#define CSN5730        PORTAbits,RA1        //Output, active low select to STV5730
#define DATA5730    PORTAbits,RA2        //Output, data to STV5730
#define SPARE0        PORTAbits,RA3        //Output, 
#define SPARE1        PORTAbits,RA4        //Output, 
#define NC1            PORTAbits,RA5        //Unavailable - used for -MCLR
#define    NC2            PORTAbits,RA6        //Unavailable - used for XTAL 
#define    NC3            PORTAbits,RA7        //Unavailable - used for XTAL
#define SPARE2        PORTBbits,RB0        //Output,
#define RX            PORTBbits,RB1        //Input, 38,400 bauds data from host
#define TX            PORTBbits,RB2        //Output, 38,400 bauds data to host
#define SPARE3        PORTBbits,RB3        //Output, 
#define SPARE4        PORTBbits,RB4        //Output,
#define CLK459        PORTBbits,RB5        //Output, SPI clock to MAX459
#define CSN459        PORTBbits,RB6        //Output, active low select to MAX459
#define DATA459        PORTBbits,RB7        //Output, data to MAX459

//***** 8-bit transfers to SPI devices
void SPI_OSD8(char SPIDataL)
{
    char Clocks = 7;
    unsigned char BitMask = 0x80;
    
    CSN5730 = 0;
        
    do
    {
        CLK5730 = 0;                            //SPI clock low while data changes
        if(BitMask & SPIDataL) DATA5730 = 1; //set or reset SPI data line
        else DATA5730 = 0;
        BitMask /= 2;
        CLK5730 = 1;                            //SPI clock high to latch data bit
    }while(Clocks-- != 0);

    CSN5730 = 1;                            //ensure devices are deselected
}