.text
addi sp, zero, 2000       #�ڴ��ջ��ʼ��

#############################################################
#�����Ʋ�?,����addi,andi,slli,srli,srai,or,ori,nor,ecall  LED�������Ʒ�ʽ������ʾ����
#############################################################

.text
START:

addi s0,zero,1 
slli s3, s0, 31      # s3=0x80000000
srai s3, s3, 31      # s3=0xFFFFFFFF   
add s0,zero,zero   # s0=0         
addi s2,zero,12 

addi s6,zero,8  #�����Ƽ���
zmd_loop:

addi s0, s0, 1    #������һ�������Ƶ���
andi s0, s0, 15  

#######################################
addi t0,zero,8    
addi t1,zero,1
left:

slli s3, s3, 4   #����������
or s3, s3, s0

add    a0,zero,s3       # display s3
addi   a7,zero,34         # system call for LED display 
ecall                 # display 

sub t0,t0,t1
bne t0,zero,left
#######################################

addi s0, s0, 1   #������һ�������Ƶ���
addi t6,zero,15
and s0, s0, t6
slli s0, s0, 28     

addi t0,zero,8
addi t1,zero,1

zmd_right:

srli s3, s3, 4  #����������
or s3, s3, s0

add    a0,zero,s3       # display s3
addi   a7,zero,34         # system call for LED display 
ecall                 # display 

sub t0,t0,t1
bne t0,zero,zmd_right
srli s0, s0, 28  
#######################################

sub s6,s6,t1
beq s6,zero, exit
j zmd_loop

exit:

add t0,zero,zero
xori t0,t0,-1      #test nor  ori
slli t0,t0,16
ori t0,t0,-1

add   a0,zero,t0       # display t0
addi   a7,zero,34         # system call for LED display 
ecall                 # display 

j START   # loop forever

 
#InteruptProgram1:
#############################################################################################
#  exceptoin 1
#  ʹ��?s6? s5?s4?s3?s0?a0?a7
#############################################################################################

################# �����ֳ�
InteruptProgram1:sw a7, 0(sp)
addi sp, sp, 4
sw a0, 0(sp)
addi sp, sp, 4
sw s0, 0(sp)
addi sp, sp, 4
sw s3, 0(sp)
addi sp, sp, 4
sw s4, 0(sp)
addi sp, sp, 4
sw s5, 0(sp)
addi sp, sp, 4
sw s6, 0(sp)
addi sp, sp, 4

csrrsi s6,0x41,0   #s6=uepc  
sw s6, 0(sp)        #uepcѹջ����
addi sp, sp, 4


################# ���ж�
 sw t0,0(sp)
 addi sp,sp,4
 sw t1,0(sp)
 addi sp,sp,4
 sw t2,0(sp)
 addi sp,sp,4
 sw t3,0(sp)
 addi sp,sp,4
 sw t4,0(sp)
 addi sp,sp,4
 sw t5,0(sp)
 addi sp,sp,4
 sw t6,0(sp)
 addi sp,sp,4
 sw s1,0(sp)
 addi sp,sp,4
 sw s2,0(sp)
 addi sp,sp,4
csrrsi zero,0x4,1   #ustatus.MIE=1

################# �жϷ���
addi s6,zero,1       #�ж�?1,2,3   ��ͬ�жϺ���ʾֵ��һ��
addi s4,zero,3      #ѭ��������ʼֵ   
addi s5,zero,1        #�������ۼ�ֵ

IntLoop1:
add s0,zero,s6   

IntLeftShift1:       

slli s0, s0, 4  
or s3,s0,s4
add    a0,zero,s3       #display s0
addi   a7,zero,34         # display hex
ecall               

bne s0, zero, IntLeftShift1
sub s4,s4,s5      #ѭ�������ݼ�
bne s4, zero, IntLoop1

################# ���ж�
csrrci zero,0x4,1  #ustatus.MIE=0
############### ����ָ�� ����(SLL/SB/BLTU ֮һ) ###############
 addi t0,zero,1
 addi t1,zero,3
 addi s1,zero,0x8
 slli s1,s1,8
 addi s1,s1,0x76
 add a0,zero,s1
 addi a7,zero,34
 ecall
 addi t3,zero,8
sll_branch:
 sll s1,s1,t0
 sll s1,s1,t1
 add a0,zero,s1
 addi a7,zero,34
 ecall
 addi t3,t3,-1
 bne t3,zero,sll_branch
 addi sp,sp,-4
 lw s2,0(sp)
 addi sp,sp,-4
 lw s1,0(sp)
 addi sp,sp,-4
 lw t6,0(sp)
 addi sp,sp,-4
 lw t5,0(sp)
 addi sp,sp,-4
 lw t4,0(sp)
 addi sp,sp,-4
 lw t3,0(sp)
 addi sp,sp,-4
 lw t2,0(sp)
 addi sp,sp,-4
 lw t1,0(sp)
 addi sp,sp,-4
 lw t0,0(sp)

################# �ָ��ֳ�
addi sp, sp, -4
lw s6, 0(sp)

csrrw zero,0x41,s6    #uepc=s6

addi sp, sp, -4
lw s6, 0(sp)
addi sp, sp, -4
lw s5, 0(sp)
addi sp, sp, -4
lw s4, 0(sp)
addi sp, sp, -4
lw s3, 0(sp)
addi sp, sp, -4
lw s0, 0(sp)
addi sp, sp, -4
lw a0, 0(sp)
addi sp, sp, -4
lw a7, 0(sp)

################  �жϷ���
uret              #ͬ�����жϣ�uepc-->pc


#InteruptProgram2:
#############################################################################################
#  exceptoin 2
#  ʹ��?s6? s5?s4?s3?s0?a0?a7
#############################################################################################

################# �����ֳ�
InteruptProgram2:sw a7, 0(sp)
addi sp, sp, 4
sw a0, 0(sp)
addi sp, sp, 4
sw s0, 0(sp)
addi sp, sp, 4
sw s3, 0(sp)
addi sp, sp, 4
sw s4, 0(sp)
addi sp, sp, 4
sw s5, 0(sp)
addi sp, sp, 4
sw s6, 0(sp)
addi sp, sp, 4

csrrsi s6,0x41,0   #s6=uepc  
sw s6, 0(sp)       #uepcѹջ����
addi sp, sp, 4


################# ���ж�
 sw t0,0(sp)
 addi sp,sp,4
 sw t1,0(sp)
 addi sp,sp,4
 sw t2,0(sp)
 addi sp,sp,4
 sw t3,0(sp)
 addi sp,sp,4
 sw t4,0(sp)
 addi sp,sp,4
 sw t5,0(sp)
 addi sp,sp,4
 sw t6,0(sp)
 addi sp,sp,4
 sw s1,0(sp)
 addi sp,sp,4
 sw s2,0(sp)
 addi sp,sp,4
csrrsi zero,0x4,1  #ustatus.MIE=1

################# �жϷ���

addi s6,zero,2       #�ж�?1,2,3   ��ͬ�жϺ���ʾֵ��һ��

addi s4,zero,3      #ѭ��������ʼֵ   
addi s5,zero,1        #�������ۼ�ֵ

IntLoop2:
add s0,zero,s6   

IntLeftShift2:       


slli s0, s0, 4  
or s3,s0,s4
add    a0,zero,s3       #display s0
addi   a7,zero,34         # display hex
ecall            

bne s0, zero, IntLeftShift2
sub s4,s4,s5      #ѭ�������ݼ�
bne s4, zero, IntLoop2

################# ���ж�
csrrci zero,0x4,1 #ustatus.MIE=0
############### ����ָ�� ����(SLL/SB/BLTU ֮һ) ###############
 addi t1,zero,0
 addi t3,zero,32
 addi s1,zero,0x00
 addi s2,zero,0x01
sb_store:
 sb s1,0(t1)
 add a0,zero,s1
 addi a7,zero,34
 ecall
 add s1,s1,s2
 addi t1,t1,1
 addi t3,t3,-1
 bne t3,zero,sb_store
 addi t3,zero,8
 addi t1,zero,0
sb_branch:
 lw s1,0(t1)
 add a0,zero,s1
 addi a7,zero,34
 ecall
 addi t1,t1,4
 addi t3,t3,-1
 bne t3,zero,sb_branch
 addi sp,sp,-4
 lw s2,0(sp)
 addi sp,sp,-4
 lw s1,0(sp)
 addi sp,sp,-4
 lw t6,0(sp)
 addi sp,sp,-4
 lw t5,0(sp)
 addi sp,sp,-4
 lw t4,0(sp)
 addi sp,sp,-4
 lw t3,0(sp)
 addi sp,sp,-4
 lw t2,0(sp)
 addi sp,sp,-4
 lw t1,0(sp)
 addi sp,sp,-4
 lw t0,0(sp)

################# �ָ��ֳ�


addi sp, sp, -4
lw s6, 0(sp)
csrrw zero,0x41,s6  #uepc=s6

addi sp, sp, -4
lw s6, 0(sp)
addi sp, sp, -4
lw s5, 0(sp)
addi sp, sp, -4
lw s4, 0(sp)
addi sp, sp, -4
lw s3, 0(sp)
addi sp, sp, -4
lw s0, 0(sp)
addi sp, sp, -4
lw a0, 0(sp)
addi sp, sp, -4
lw a7, 0(sp)

################  �жϷ���
uret              #ͬ�����жϣ�uepc-->pc


#InteruptProgram3:
#############################################################################################
#  exceptoin 3
#  ʹ��?s6? s5?s4?s3?s0?a0?a7
#############################################################################################


################# �����ֳ�
InteruptProgram3:sw a7, 0(sp)
addi sp, sp, 4
sw a0, 0(sp)
addi sp, sp, 4
sw s0, 0(sp)
addi sp, sp, 4
sw s3, 0(sp)
addi sp, sp, 4
sw s4, 0(sp)
addi sp, sp, 4
sw s5, 0(sp)
addi sp, sp, 4
sw s6, 0(sp)
addi sp, sp, 4

csrrsi s6,0x41,0   #s6=uepc  
sw s6, 0(sp)       #uepcѹջ����
addi sp, sp, 4


################# ���ж�
 sw t0,0(sp)
 addi sp,sp,4
 sw t1,0(sp)
 addi sp,sp,4
 sw t2,0(sp)
 addi sp,sp,4
 sw t3,0(sp)
 addi sp,sp,4
 sw t4,0(sp)
 addi sp,sp,4
 sw t5,0(sp)
 addi sp,sp,4
 sw t6,0(sp)
 addi sp,sp,4
 sw s1,0(sp)
 addi sp,sp,4
 sw s2,0(sp)
 addi sp,sp,4
csrrsi zero,0x4,1  #ustatus.MIE=1

################# �жϷ���
addi s6,zero,3       #�ж�?1,2,3   ��ͬ�жϺ���ʾֵ��һ��
addi s4,zero,3       #ѭ��������ʼֵ   
addi s5,zero,1       #�������ۼ�ֵ

IntLoop3:
add s0,zero,s6   

IntLeftShift3:       

slli s0, s0, 4  
or s3,s0,s4
add    a0,zero,s3       #display s0
addi   a7,zero,34         # display hex
ecall                 

bne s0, zero, IntLeftShift3
sub s4,s4,s5      #ѭ�������ݼ�
bne s4, zero, IntLoop3

################# ���ж�
csrrci zero,0x4,1  #ustatus.MIE=0
############### ����ָ�� ����(SLL/SB/BLTU ֮һ) ###############
 addi s1,zero,-15
bltu_branch:
 add a0,zero,s1
 addi a7,zero,34
 ecall
 addi s1,s1,1
 bltu zero,s1,bltu_branch
 add a0,zero,s1
 addi a7,zero,34
 ecall
 addi sp,sp,-4
 lw s2,0(sp)
 addi sp,sp,-4
 lw s1,0(sp)
 addi sp,sp,-4
 lw t6,0(sp)
 addi sp,sp,-4
 lw t5,0(sp)
 addi sp,sp,-4
 lw t4,0(sp)
 addi sp,sp,-4
 lw t3,0(sp)
 addi sp,sp,-4
 lw t2,0(sp)
 addi sp,sp,-4
 lw t1,0(sp)
 addi sp,sp,-4
 lw t0,0(sp)

################# �ָ��ֳ�

addi sp, sp, -4
lw s6, 0(sp)
csrrw zero,0x41,s6  #uepc=s6

addi sp, sp, -4
lw s6, 0(sp)
addi sp, sp, -4
lw s5, 0(sp)
addi sp, sp, -4
lw s4, 0(sp)
addi sp, sp, -4
lw s3, 0(sp)
addi sp, sp, -4
lw s0, 0(sp)
addi sp, sp, -4
lw a0, 0(sp)
addi sp, sp, -4
lw a7, 0(sp)

################  �жϷ���
uret              #ͬ�����жϣ�uepc-->pc