How to write this prog in MIPS(Mars)??

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April 24th, 2011, 03:03 PM

Ebda3

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Assembly - How to write this prog in MIPS(Mars)??

hi gents

i can't start to resolve this progarm it's so deficult ...

....Write program can be used to generate (n) random number (0<= x <1).
Show a sample output for 10 numbers????

April 25th, 2011, 10:06 AM

MrFujin

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To answer your question - How to write this prog in MIPS(Mars)?):
Start learning the assemble language.. everything is difficult at the beginning.

Unless you read the sticky and have a more "direct"/precise question, the best we can do is redirect you to google and/or a assemble "manual".
Like this one: http://logos.cs.uic.edu/366/notes/mips%20quick%20tutorial.htm
You can also take at look at http://en.wikibooks.org/wiki/MIPS_Assembly

April 29th, 2011, 05:49 AM

Ebda3

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here is my work but i can't find the problem
the problem when i do run only
but when i do assemple it shows me is sucssefully

Quote:

a: .word 673
c: .word 37 x: .word 1
.text
lcm: ## argument: none, returns X(n+1) in $v0
lw $t1, a # const a
lw $t2, c # const c
lw $t3, x # current X
multu $t3, $t1 # HILO <- X * a
mflo $v0 # v0 <- Lo
addu $v0, $v0, $t2 # v0 += c
sw $v0, x
jr $ra
# lcminit - sets initial X for LCM RNG
# X = $a0, return#
lcminit:sw, $a0, x # save $a0 in x
jr $ra

lcmmod:
# $v0 = lcm() % $a0; return $v0

addi $sp, $sp, -4 # push return address
sw $ra, 0($sp) #
jal lcm # v0 <- lcm (32 bit word)
divu $v0, $a0
mfhi $v0 # v0 <- lcm % a0
lw $ra, 0($sp) # pop return address
addi $sp, $sp, 4 #
jr $ra

# main program
.text # main MUST BE GLOBAL
.globl main
main:
loop: # PRINT prompt
.data
prompt: .asciiz "\nX(0)(-1 to exit): "
.text
la $a0, prompt
li $v0, 4
syscall
li $v0, 5 # read i
syscall
sw $v0, -12($fp)
move $a0, $v0
jal lcminit #initialize thge LCM RNG
blt $v0, 0, exit # If i<0, exit
.data # PRINT ans
ans: .asciiz "lcm is: "
modulus:.word 1000
.text
la $a0, ans ###replaced
li $v0, 4
syscall
li $s3, 3 # loop 3 times
lcmloop:
blt $s3, 1, prompt # if done loop, get new X(0)
sub $s3, $s3, 1
lw $a0, modulus
# CALL lcmmod
jal lcmmod
# PRINT lccmod
move $a0, $v0
li $v0, 1
syscall
.data # print comma
comma: .asciiz ","
.text
la $a0, comma
li $v0, 4
syscall
b lcmloop # next lcm
exit:
li $v0, 10 # Appropriate way to end assembly code
syscall

April 29th, 2011, 02:13 PM

MrFujin

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You have to be more descriptive.

When/where (in code) does it start to fail?
What did you expect?
What actually happen?

Assembly - How to write this prog in MIPS(Mars)??

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