Subversion Repositories mips32

MAIN:

##initialize the value to 1

addi $s0, $zero, 1

sw $s0, 4($zero)

addi $s1, $zero, 8

addi $s2, $zero, 1

jal DELAY_S

START:

lw $s3, 4($zero)

beq $s3, $s1, MAIN

sllv $s3, $s3, $s2

sw $s3, 4($zero)

jal DELAY_S

j START

# function of delay 1 second when clk = 50MHz

# the total cycles is 50M/5=10M cycles = 10000 x 1000

DELAY_S:

ori $t1, $zero, 0

ori $a0, $zero, 10000   #10000

ori $a1, $zero, 1000    #1000

DELAY_LOOP1:

ori $t0, $zero, 0

DELAY_LOOP2:

addi $t0, $t0, 1

bne $t0, $a0, DELAY_LOOP2

addi $t1, $t1, 1

bne $t1, $a1, DELAY_LOOP1

jr $ra