tc2tim.asm

8051硬核源码（VHDL）

reset: 	ljmp start                       
i_ext0: ljmp j_ext0                     
	nop                                     
	nop                                     
	nop                                     
	nop                                     
	nop                                     
i_tim0: ljmp j_tim0              
	nop                                     
	nop                                     
	nop                                     
	nop                                     
	nop                                     
i_ext1: ljmp j_ext1                     
	nop                                     
	nop                                     
	nop                                     
	nop                                     
	nop                                     
i_tim1: ljmp j_tim1              
	nop                                     
	nop                                     
	nop                                     
	nop                                     
	nop                                     
i_siu: 	ljmp j_siu                       

start:	mov 0aah,#00h
	mov 0bah,#00h
	mov 09Dh,#00h

	mov sp, #70h                            
	mov tmod, #01100110b    ; both activated as counter
	mov tcon, #01010001b    ; run flags set, ext0 edge sensitive
	mov th0, #0ffh                          
	mov tl0, #0ffh                           
	mov th1, #0ffh                          
	mov tl1, #0ffh                          
	mov ip, #00000000b                      
	mov ie, #10001011b      ; ena X0, T0, T1

loop:   mov a, #11h
        sjmp loop
	
j_ext0: mov a, #003h
	reti                     
                                        
j_tim0: mov a, #00Bh
	reti                                    
                                        
j_ext1: reti                     
                                        
j_tim1: mov a, #01Bh
	reti                                    
                                        
j_siu: 	reti                             
	
	end