I'm still getting these errors tho.
malugirl4 0 Junior Poster in Training
wildgoose 420 Practically a Posting Shark
I've cleaned it up. You'll have to see if it compiles or not.
You'll need to finish the robot falls conditionals and switch( robot_state) code.
Good Night and good luck on your finals!
.data # variable declarations follow this line
iSAFE: 1
iCHASM: 2
iTRAP: 3
iDESTINATION: 4
maze: .space 144 # 9x9 stored in a 16x9 buffer
robot_x: .word 0
robot_y: .word 0
robot_m_x: .word 0
robot_m_y: .word 0
robot_instructions: .space 256
MsgRS1: .asciiz "Robot is at a safe place\n"
MsgRS2: .asciiz "Robot falls into Chasm\n"
MsgRS3: .asciiz "Robot falls into the trap\n"
MsgRS4: .asciiz "Robot reaches Destination\n"
MsgRS5: .asciiz "Robot fails to reach Destination\n"
MsgFinal: .asciiz: "Robot final location X: "
MsgY: .asciiz " Y: "
MsyCR: .asciiz "\n"
MsgRobotState: .asciiz "Robot State: \n"
MsgFallenChasm: .asciiz "Robot has fallen into a chasm\n"
MsgFallenTrap: .asciiz "Robot has fallen into a trap\n"
MsgReachedDestination: .asciiz "Robot has reached Destination\n"
MsgSafePlace: .asciiz "Robot is at a safe place\n"
MsgFallsChasm: .asciiz "Robot falls into Chasm\n"
MsgFallsTrap: .asciiz "Robot falls into the trap\n"
MsgReachesDestination: .asciiz "Robot reaches Destination\n"
MsgFailsDestination: .asciiz "Robot fails to reach Destination\n"
.text # CODE SECTION OF ASM FILE
#main:
li $v0,30 # Get time
syscall # CMD: Get Time
# $a0 = lower 32-bits, $a1=upper 32-bits
# Seed RNG (Random Number Generator)
move $a1,$a0 # get lower 32-bit time as seed
li $a0,0 # Rng#0
syscall # CMD: Seed the RNG
# Clear Entire Maze Array
la $t0, maze # load address of maze
li $t3, 0
li $t1, 144
clr: # repeat if not finished yet.
la $t0, maze # base address
li $t3, 2 # maze[i] = 2
sb $t3, 0($t0)
add $t0, $t0, 1 # address++
add $t1, $t1, -1 # count--
bgtz $t1, clr
# Setup variables
la $t0, maze # base address
li $a1,1 # iSAFE:
sb $t1,0x11($t0) # maze[1][1] = 1;
li $a1,2 # iCHASM:
sb $t1,0, 0x12($t0) # maze[1][2] = 2
sb $t1,0x24($t0) # maze[2][4] = 2
li $a1, 3 #iTRAP:
sb $t1, 0x23($t0) # maze[2][3]
sb $t1, 0x34($t0) # maze[3][4]
li $a1, 4 #iDESTINATION: # maze[3][2] = 4;
sb $t1, 0x32($t0) # 1 x 16 + 4
# robot_x = 1
la $t0,robot_x
li $t1,1
sw $t1,0($t0)
# robot_y = 2
la $t0,robot_y
li $t1,2
sw $t1,0($t0)
# init robot_state = 5
la $t0,robot_state
li $t1,5
sw $t1,0($t0)
la $t7,robot_instructions # index
li $t6,64
MoveLoop:
# Get a Random #
li $a0, 0 # Rng#
li $a1, 4 # rand() %4 {0...3}
li $v0, 42
syscall # Get RNG
# $a0 = {0...3}
add $a0, $a0, 1 # {1...4}
sw $a0,0($t7) # robot_instructions[i] = rnd{ 1...4 }
add $a0, $a0, -1
bne RJump
# case 1: MOVE
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
sw $t2,0($t0) # robot_x = robot_m_x
la $t1,robot_m_y
la $t0,robot_y
lw $t2,0($t1)
add $t2,$t2,1
sw $t2,0($t0) # robot_y = robot_m_y + 1
jr PrtOut
RJump:
add $a0, $a0, -1
bne RLeft
# case 2: Jump
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
sw $t2,0($t0) # robot_x = robot_m_x
la $t1,robot_m_y
la $t0,robot_y
lw $t2, 0($t1)
add $t2, $t2, 2
sw $t2, 0($t0) # robot_y = robot_m_y + 2
jr PrtOut
RLeft:
add $a0, $a0, -1
bne RRight
# case 3: Left
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
add $t2, $t2, -1
sw $t2,0($t0) # robot_x = robot_m_x - 1
jr PrtOut
RRight:
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
add $t2, $t2, 1
sw $t2,0($t0) # robot_x = robot_m_x + 1
# Process new robot posit5ions!
PrtOut:
# System.out.println("Robot final location X: " + robot_x + " Y: " + robot_y);
la $a0, MsgFinal
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_x
lw $a0,0($t0)
li $v0, 1
syscall # CMD: Seed the RNG
la $a0, MsgY
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_y
lw $a0,0($t0)
li $v0, 1
syscall # CMD: Seed the RNG
la $a0, MsgCR
li $v0, 4 # specify Print String service
syscall # print heading
# System.out.println ("Robot State: ");
# <--- Insert conditional logic here
# <--- Insert switch(robot_state) here
add $t7, $t7, 4
add $t6, $t6, -1
jgz MoveLoop # Loop 64 times
jr $ra # return malugirl4 0 Junior Poster in Training
Thank you so much for your help.
wildgoose 420 Practically a Posting Shark
Double check the comments.
There are cut'n'paste mistakes
Replace this code near end of file...
PrtOut:
# System.out.println("Robot final location X: " + robot_x + " Y: " + robot_y);
la $a0, MsgFinal
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_x
lw $a0,0($t0)
li $v0, 1
syscall # CMD: print robot x integer
la $a0, MsgY
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_y
lw $a0,0($t0)
li $v0, 1
syscall # CMD: print robot Y integer
la $a0, MsgCR
li $v0, 4 # specify Print String service
syscall # print heading
# System.out.println ("Robot State: "); malugirl4 0 Junior Poster in Training
Error in assembly line 69 position 2: "sb": Too many or incorrectly formatted operands. Expected: sb $1,-100($2)
Error in assembly line 73 position 2: "sb": Too many or incorrectly formatted operands. Expected: sb $1,-100($2)
Error in assembly line 112 position 2: "bne": Too few or incorrectly formatted operands. Expected: bne $1,$2,label
Error in assembly line 128 position 5: "PrtOut": operand is of incorrect type
Error in assembly line 133 position 2: "bne": Too few or incorrectly formatted operands. Expected: bne $1,$2,label
Error in assembly line 149 position 5: "PrtOut": operand is of incorrect type
Error in assembly line 154 position 2: "bne": Too few or incorrectly formatted operands. Expected: bne $1,$2,label
Error in assembly line 165 position 5: "PrtOut": operand is of incorrect type
Error in assembly line 217 position 2: "jgz" directive cannot appear in text segment
Assemble: operation completed with errors.
malugirl4 0 Junior Poster in Training
Could you start me off with the first conditional / switch statement, so I know I'm heading in the right direction.
wildgoose 420 Practically a Posting Shark
I know its too late now but this morning after some sleep noticed some mistakes....
#MsyCR: .asciiz "\n"
MsgCR: .asciiz "\n"Typo...
Type here
#sb $t1,0, 0x12($t0) # maze[1][2] = 2
sb $t1, 0x12($t0) # maze[1][2] = 2Wrong code
RJump:
add $a0, $a0, -1
bne RLeft...Corrected...
RJump:
add $a0, $a0, -1
bnez RLeftSame with the other switch cases! bnez instead of bne
bne is for comparing two registers to each other!
# bne RLeft
bnez RLeft
# bne RRight
bnez RRight# jgz MoveLoop # Loop 64 times
jgtz MoveLoop # Loop up 63 times for 64 loops# <--- Insert conditional logic here
Print the starting string "Robot State:"
if (( (robot_x == 1) && (robot_y == 2)) || ( (robot_x == 2) && (robot_y == 4)) )
{
System.out.println("Robot has fallen into a chasm");
robot_state = 2;
}You already know how to get a value within memory
la $t0,robot_x
lw $t0,0($t0) # $t0 = robot_x
la $t5,robot_y
lw $t5,0($t1) # $t5 = robot_y
# since you have many comparisons of those to values to 1,2,3,4
# Using $t1 ... $t4 since they look similar to 1...4
li $t1,1
li $t2,2
li $t3,3
li $t4,4
# so now use the register to register compares
# Ref: if (( (robot_x == 1) && (robot_y == 2)) || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t1,LineA3 # jump if robot_x <> 1
beq $t5,$t2,LineA3 # jump if robot_y == 2
LineA3: # || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t2,$LineB #jump if robot_x <> 2
bne $t5,$t4,$LineB #jump if robot_y <> 4
LineAOK: # SUCCESS
la $a0, MsgFallenChasm
li $v0, 4 # specify Print String service
syscall # print heading
la $a0, robot_state
sw $t2,0($a0) # robot_state = 2
jr Done:
# _______________
# Next conditional line
# Ref: else if(( (robot_x == 2) && (robot_y == 3)) || ((robot_x == 3) && (robot_y == 4)))
LineB:
Done:# <--- Insert switch(robot_state) here
Do the code the same way as the four move states after the random was done above only this time you're printing not calculating new coordinates. I personally would use a lookup table where the robot_state is used as in index into a table of string addresses, and then that address is used to print.
malugirl4 0 Junior Poster in Training
hey thanks I already turned it in this morning. it wouldnt compile I got a 70 tho..I can't complain.. And I didn't finish the code.
wildgoose 420 Practically a Posting Shark
No problem. Thanks for letting me know. I was kind of curious.
I take it, no chance emailing the final version to your instructor?
Well, did you review the final notes and your code and figure out what was wrong? And how to finish it? That's how one learns! Even after they don't have to. They pick at it, figure out things without the time restraint and stress.
wildgoose 420 Practically a Posting Shark
Like for example...
bne $t0,$t1,LineA3 # jump if robot_x <> 1
# beq $t5,$t2,LineA3 # jump if robot_y == 2
beq $t5,$t2,LineAOK # jump if robot_y == 2
LineA3: # || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t2,$LineB #jump if robot_x <> 2
bne $t5,$t4,$LineB #jump if robot_y <> 4
LineAOK: # SUCCESSUpon review, I just noticed a mistake from this mornings post.
Still learning! Of course if I was working live with tools instead of in my head with an editor, some of the issues would have been exposed earlier. But again, not my assignment and as I tell my kids. I can't do your homework for you. I can only nudge you in the correct directions. (though I must admit, on this particular task I think I nudged a lot more then I should have!)
malugirl4 0 Junior Poster in Training
.data # variable declarations follow this line
iSAFE: 1
iCHASM: 2
iTRAP: 3
iDESTINATION: 4
maze: .space 144 # 9x9 stored in a 16x9 buffer
robot_x: .word 0
robot_y: .word 0
robot_m_x: .word 0
robot_m_y: .word 0
robot_instructions: .space 256
MsgRS1: .asciiz "Robot is at a safe place\n"
MsgRS2: .asciiz "Robot falls into Chasm\n"
MsgRS3: .asciiz "Robot falls into the trap\n"
MsgRS4: .asciiz "Robot reaches Destination\n"
MsgRS5: .asciiz "Robot fails to reach Destination\n"
MsgFinal: .asciiz: "Robot final location X: "
MsgY: .asciiz " Y: "
MsyCR: .asciiz "\n"
MsgRobotState: .asciiz "Robot State: \n"
MsgFallenChasm: .asciiz "Robot has fallen into a chasm\n"
MsgFallenTrap: .asciiz "Robot has fallen into a trap\n"
MsgReachedDestination: .asciiz "Robot has reached Destination\n"
MsgSafePlace: .asciiz "Robot is at a safe place\n"
MsgFallsChasm: .asciiz "Robot falls into Chasm\n"
MsgFallsTrap: .asciiz "Robot falls into the trap\n"
MsgReachesDestination: .asciiz "Robot reaches Destination\n"
MsgFailsDestination: .asciiz "Robot fails to reach Destination\n"
.text # CODE SECTION OF ASM FILE
#main:
li $v0,30 # Get time
syscall # CMD: Get Time
# $a0 = lower 32-bits, $a1=upper 32-bits
# Seed RNG (Random Number Generator)
move $a1,$a0 # get lower 32-bit time as seed
li $a0,0 # Rng#0
syscall # CMD: Seed the RNG
# Clear Entire Maze Array
la $t0, maze # load address of maze
li $t3, 0
li $t1, 144
clr: # repeat if not finished yet.
la $t0, maze # base address
li $t3, 2 # maze[i] = 2
sb $t3, 0($t0)
add $t0, $t0, 1 # address++
add $t1, $t1, -1 # count--
bgtz $t1, clr
# Setup variables
la $t0, maze # base address
li $a1,1 # iSAFE:
sb $t1,0x11($t0) # maze[1][1] = 1;
li $a1,2 # iCHASM:
sb $t1,0, 0x12($t0) # maze[1][2] = 2
sb $t1,0x24($t0) # maze[2][4] = 2
li $a1, 3 #iTRAP:
sb $t1, 0x23($t0) # maze[2][3]
sb $t1, 0x34($t0) # maze[3][4]
li $a1, 4 #iDESTINATION: # maze[3][2] = 4;
sb $t1, 0x32($t0) # 1 x 16 + 4
# robot_x = 1
la $t0,robot_x
li $t1,1
sw $t1,0($t0)
# robot_y = 2
la $t0,robot_y
li $t1,2
sw $t1,0($t0)
# init robot_state = 5
la $t0,robot_state
li $t1,5
sw $t1,0($t0)
la $t7,robot_instructions # index
li $t6,64
MoveLoop:
# Get a Random #
li $a0, 0 # Rng#
li $a1, 4 # rand() %4 {0...3}
li $v0, 42
syscall # Get RNG
# $a0 = {0...3}
add $a0, $a0, 1 # {1...4}
sw $a0,0($t7) # robot_instructions[i] = rnd{ 1...4 }
add $a0, $a0, -1
bnez RJump
# case 1: MOVE
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
sw $t2,0($t0) # robot_x = robot_m_x
la $t1,robot_m_y
la $t0,robot_y
lw $t2,0($t1)
add $t2,$t2,1
sw $t2,0($t0) # robot_y = robot_m_y + 1
jr PrtOut
RJump:
add $a0, $a0, -1
bnez RLeft
# case 2: Jump
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
sw $t2,0($t0) # robot_x = robot_m_x
la $t1,robot_m_y
la $t0,robot_y
lw $t2, 0($t1)
add $t2, $t2, 2
sw $t2, 0($t0) # robot_y = robot_m_y + 2
jr PrtOut
RLeft:
add $a0, $a0, -1
bnez RRight
# case 3: Left
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
add $t2, $t2, -1
sw $t2,0($t0) # robot_x = robot_m_x - 1
jr PrtOut
RRight:
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
add $t2, $t2, 1
sw $t2,0($t0) # robot_x = robot_m_x + 1
# Process new robot posit5ions!
PrtOut:
# System.out.println("Robot final location X: " + robot_x + " Y: " + robot_y);
la $a0, MsgFinal
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_x
lw $a0,0($t0)
li $v0, 1
syscall # CMD: print robot x integer
la $a0, MsgY
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_y
lw $a0,0($t0)
li $v0, 1
syscall # CMD: print robot Y integer
la $a0, MsgCR
li $v0, 4 # specify Print String service
syscall # print heading
# System.out.println ("Robot State: ");
add $t7, $t7, 4
add $t6, $t6, -1
jgz MoveLoop # Loop 64 times
jr $ra # return
I left it like that. Cause I dont understand assembly and I hope I never have to see it again unless we're really taught about it.But do you know what the end product would look like..I just wanna put it in mars and see how it would have ran..Mine didnt run..There were too many errors..
wildgoose 420 Practically a Posting Shark
You're really close! If all your finals are done. Look at this mornings posting of errors, and make those corrections. Then look at the 1st conditional test. I called it LineA, and look at its comments. Along with the correction to it, I did about three minutes ago!
Look at it this way. It's an incomplete project. If you want a win in your own self-esteem, spend some time on it this weekend and try to figure it out.
malugirl4 0 Junior Poster in Training
.data
maze:.word 0 0 0 0 0 0 0 0 0 0 0 2 1 1 2 2 1 1 1 0 0 1 2 1 1 1 3 3 1 0
0 2 1 1 3 1 1 1 1 0 0 2 1 3 1 1 1 1 1 0 0 1 1 2 1 1 3 1 1 0 0 1 1 1 1
1 1 3 1 0 0 1 1 1 1 2 1 1 4 0 0 1 1 1 1 3 1 1 1 0 0 0 0 0 0 0 0 0 0 0
inst:.word 1 4 2 1 3 2 1 4 1 2 1 3 1 1
swi1:.word 0 : 4
swi2:.word 0 : 5
swi4:.word 0 : 7
space:.asciiz " "
rus1:.asciiz "Robot final location X: "
rus2:.asciiz " Y: "
rus3:.asciiz " Robot: "
sat1:.asciiz "Robot is at a safe place"
sat2:.asciiz "Robot reaches Destination"
sat3:.asciiz "Robot falls into Chasm"
sat4:.asciiz "Robot falls into the trap "
sat5:.asciiz "robot go to out side of table"
sat6:.asciiz "Robot fails to reach Destination"
.text
main:
la $a0, maze
la $a1, inst
li $s0, 0
li $s1, 0
li $s2, 0
li $s3, 1
li $s4, 0
li $s5, 0
li $s6, 0
li $s0, 1
li $s1, 1
la $s7, swi2
la $t0, sw2_L1
sw $t0, 4($s7)
la $t0, sw2_L2
sw $t0, 8($s7)
la $t0, sw2_L3
sw $t0, 12($s7)
la $t0, sw2_L4
sw $t0, 16($s7)
la $s7, swi4
la $t0, sw4_L1
sw $t0, 4($s7)
la $t0, sw4_L2
sw $t0, 8($s7)
la $t0, sw4_L3
sw $t0, 12($s7)
la $t0, sw4_L4
sw $t0, 16($s7)
la $t0, sw4_L5
sw $t0, 20($s7)
la $t0, sw4_L6
sw $t0, 24($s7)
loop:
sll $t1, $s6, 2
add $t2, $t1, $a1
lw $t0, 0($t2)
beq $t0, $zero, loop_exit
sw2:
la $s7, swi2
sll $t3, $t0, 2
add $t3, $t3, $s7
lw $t4, 0($t3)
jr $t4
sw2_L1:
li $t8, 0
bne $s2, $t8, l1
addi $s1,$s1, 1
j l1_ex
l1:
li $t8, 1
bne $s2, $t8, l2
addi $s0,$s0, 1
j l1_ex
l2:
li $t8, 2
bne $s2, $t8, l3
addi $s1,$s1, -1
j l1_ex
l3:
addi $s0,$s0, -1
l1_ex:
sw2_L2:
li $t8, 0
bne $s2, $t8, l21
addi $s1,$s1, 1
j l21_ex
l21:
li $t8, 1
bne $s2, $t8, l22
addi $s0,$s0, 1
j l21_ex
l22:
li $t8, 2
bne $s2, $t8, l23
addi $s1,$s1, -1
j l21_ex
l23:
addi $s0,$s0, -1
l21_ex:
j sw2_exit
sw2_L3:
bne $s2, $zero, sw2_L3_else
li $s2, 3
j sw2_exit
sw2_L3_else:
addi $s2, $s2 , -1
j sw2_exit
sw2_L4:
li $t5, 3
bne $s2, $t5, sw2_L4_else
li $s2, 0
j sw2_exit
sw2_L4_else:
addi $s2, $s2, 1
j sw2_exit
sw2_exit:
li $t8, 0
sll $t8, $s1, 3
add $t8, $t8, $s1
add $t8, $t8, $s1
add $t8, $t8, $s0
sll $t8, $t8, 2
la $t3, maze
add $t8, $t3, $t8
lw $t3, 0($t8)
slti $t4, $t3, 0
bne $t3, 1, loop_exit
addi $s6, $s6, 1
j loop
loop_exit:
la $a0, rus1
li $v0, 4
syscall
add $a0, $s0, $zero
li $v0, 1
syscall
la $a0, rus2
li $v0, 4
syscall
add $a0, $s1, $zero
li $v0, 1
syscall
la $a0, rus3
li $v0, 4
syscall
sw4:
la $s7, swi4
sll $t3, $s3, 2
add $t3, $t3, $s7
lw $t4, 0($t3)
jr $t4
sw4_L1:
la $a0, sat1
li $v0, 4
syscall
j sw4_exit
sw4_L2:
la $a0, sat2
li $v0, 4
syscall
j sw4_exit
sw4_L3:
la $a0, sat3
li $v0, 4
syscall
j sw4_exit
sw4_L4:
la $a0, sat4
li $v0, 4
syscall
j sw4_exit
sw4_L5:
la $a0, sat5
li $v0, 4
syscall
j sw4_exit
sw4_L6:
la $a0, sat6
li $v0, 4
syscall
j sw4_exit
sw4_exit:
li $v0, 10
syscall
jr $ra # return
I did this at the lab today..but I liked the code we did better
wildgoose 420 Practically a Posting Shark
It looks like you're just calling print functions!
malugirl4 0 Junior Poster in Training
Do you know why this error occurs?
Error in praccode line 208 position 1: "sb": Too many or incorrectly formatted operands. Expected: sb $1,-100($2)
Error in praccode line 209 position 1: "sb": Too many or incorrectly formatted operands. Expected: sb $1,-100($2)
Assemble: operation completed with errors.
wildgoose 420 Practically a Posting Shark
So what are in lines 207 to 210 in your editor?
Did you miss a correction? Note the arrow.
But I see another mistake. We load an immediate value into $a1 but save $t1 So need to change those immediate loads!
#li $a1,1 # iSAFE:
li $t1,1 # iSAFE:
sb $t1,0x11($t0) # maze[1][1] = 1;
#li $a1,2 # iCHASM:
li $t1,2 # iCHASM:
#sb $t1,0, 0x12($t0) # maze[1][2] = 2
sb $t1, 0x12($t0) # maze[1][2] = 2 <---------------
sb $t1,0x24($t0) # maze[2][4] = 2
#li $a1, 3 #iTRAP:
li $t1, 3 #iTRAP:
sb $t1, 0x23($t0) # maze[2][3]
sb $t1, 0x34($t0) # maze[3][4]
#li $a1, 4 #iDESTINATION: # maze[3][2] = 4;
li $t1, 4 #iDESTINATION: # maze[3][2] = 4;
sb $t1, 0x32($t0) # 1 x 16 + 4 malugirl4 0 Junior Poster in Training
Error in Assembly2 line 117 position 2: "bnez": Too few or incorrectly formatted operands. Expected: bnez $1,label
Error in Assembly2 line 133 position 5: "PrtOut": operand is of incorrect type
Error in Assembly2 line 138 position 2: "bnez": Too few or incorrectly formatted operands. Expected: bnez $1,label
Error in Assembly2 line 154 position 5: "PrtOut": operand is of incorrect type
Error in Assembly2 line 159 position 2: "bnez": Too few or incorrectly formatted operands. Expected: bnez $1,label
Error in Assembly2 line 170 position 5: "PrtOut": operand is of incorrect type
Error in Assembly2 line 238 position 3: "jr": Too many or incorrectly formatted operands. Expected: jr $1
Error in Assembly2 line 248 position 2: "jgz" directive cannot appear in text segment
Assemble: operation completed with errors.
I'm still get these errors
wildgoose 420 Practically a Posting Shark
can you post the entire code so I have a reference.
malugirl4 0 Junior Poster in Training
.data # variable declarations follow this line
iSAFE: 1
iCHASM: 2
iTRAP: 3
iDESTINATION: 4
maze: .space 144 # 9x9 stored in a 16x9 buffer
robot_x: .word 0
robot_y: .word 0
robot_m_x: .word 0
robot_m_y: .word 0
robot_instructions: .space 256
MsgRS1: .asciiz "Robot is at a safe place\n"
MsgRS2: .asciiz "Robot falls into Chasm\n"
MsgRS3: .asciiz "Robot falls into the trap\n"
MsgRS4: .asciiz "Robot reaches Destination\n"
MsgRS5: .asciiz "Robot fails to reach Destination\n"
MsgFinal: .asciiz "Robot final location X: "
MsgY: .asciiz " Y: "
MsyCR: .asciiz "\n"
MsgRobotState: .asciiz "Robot State: \n"
MsgFallenChasm: .asciiz "Robot has fallen into a chasm\n"
MsgFallenTrap: .asciiz "Robot has fallen into a trap\n"
MsgReachedDestination: .asciiz "Robot has reached Destination\n"
MsgSafePlace: .asciiz "Robot is at a safe place\n"
MsgFallsChasm: .asciiz "Robot falls into Chasm\n"
MsgFallsTrap: .asciiz "Robot falls into the trap\n"
MsgReachesDestination: .asciiz "Robot reaches Destination\n"
MsgFailsDestination: .asciiz "Robot fails to reach Destination\n"
.text # CODE SECTION OF ASM FILE
#main:
li $v0,30 # Get time
syscall # CMD: Get Time
# $a0 = lower 32-bits, $a1=upper 32-bits
# Seed RNG (Random Number Generator)
move $a1,$a0 # get lower 32-bit time as seed
li $a0,0 # Rng#0
syscall # CMD: Seed the RNG
# Clear Entire Maze Array
la $t0, maze # load address of maze
li $t3, 0
li $t1, 144
clr: # repeat if not finished yet.
la $t0, maze # base address
li $t3, 2 # maze[i] = 2
sb $t3, 0($t0)
add $t0, $t0, 1 # address++
add $t1, $t1, -1 # count--
bgtz $t1, clr
# Setup variables
la $t0, maze # base address
#li $a1,1 # iSAFE:
li $t1,1 # iSAFE:
sb $t1,0x11($t0) # maze[1][1] = 1;
#li $a1,2 # iCHASM:
li $t1,2 # iCHASM:
#sb $t1,0, 0x12($t0) # maze[1][2] = 2
sb $t1, 0x12($t0) # maze[1][2] = 2
sb $t1,0x24($t0) # maze[2][4] = 2
#li $a1, 3 #iTRAP:
li $t1, 3 #iTRAP:
sb $t1, 0x23($t0) # maze[2][3]
sb $t1, 0x34($t0) # maze[3][4]
#li $a1, 4 #iDESTINATION: # maze[3][2] = 4;
li $t1, 4 #iDESTINATION: # maze[3][2] = 4;
sb $t1, 0x32($t0) # 1 x 16 + 4
# robot_x = 1
la $t0,robot_x
li $t1,1
sw $t1,0($t0)
# robot_y = 2
la $t0,robot_y
li $t1,2
sw $t1,0($t0)
# init robot_state = 5
la $t0,robot_state
li $t1,5
sw $t1,0($t0)
la $t7,robot_instructions # index
li $t6,64
MoveLoop:
# Get a Random #
li $a0, 0 # Rng#
li $a1, 4 # rand() %4 {0...3}
li $v0, 42
syscall # Get RNG
# $a0 = {0...3}
add $a0, $a0, 1 # {1...4}
sw $a0,0($t7) # robot_instructions[i] = rnd{ 1...4 }
add $a0, $a0, -1
bnez RJump
# case 1: MOVE
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
sw $t2,0($t0) # robot_x = robot_m_x
la $t1,robot_m_y
la $t0,robot_y
lw $t2,0($t1)
add $t2,$t2,1
sw $t2,0($t0) # robot_y = robot_m_y + 1
jr PrtOut
RJump:
add $a0, $a0, -1
bnez RLeft
# case 2: Jump
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
sw $t2,0($t0) # robot_x = robot_m_x
la $t1,robot_m_y
la $t0,robot_y
lw $t2, 0($t1)
add $t2, $t2, 2
sw $t2, 0($t0) # robot_y = robot_m_y + 2
jr PrtOut
RLeft:
add $a0, $a0, -1
bnez RRight
# case 3: Left
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
add $t2, $t2, -1
sw $t2,0($t0) # robot_x = robot_m_x - 1
jr PrtOut
RRight:
la $t1,robot_mx
la $t0,robot_x
lw $t2,0($t1)
add $t2, $t2, 1
sw $t2,0($t0) # robot_x = robot_m_x + 1
# Process new robot posit5ions!
PrtOut:
# System.out.println("Robot final location X: " + robot_x + " Y: " + robot_y);
la $a0, MsgFinal
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_x
lw $a0,0($t0)
li $v0, 1
syscall # CMD: print robot x integer
la $a0, MsgY
li $v0, 4 # specify Print String service
syscall # print heading
la $t0,robot_y
lw $a0,0($t0)
li $v0, 1
syscall # CMD: print robot Y integer
la $a0, MsgCR
li $v0, 4 # specify Print String service
syscall # print heading
# System.out.println ("Robot State: ");
la $t0,robot_x
lw $t0,0($t0) # $t0 = robot_x
la $t5,robot_y
lw $t5,0($t1) # $t5 = robot_y
# Using $t1 ... $t4 since they look similar to 1...4
li $t1,1
li $t2,2
li $t3,3
li $t4,4
# register to register compares
# Ref: if (( (robot_x == 1) && (robot_y == 2)) || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t1,LineA3 # jump if robot_x <> 1
beq $t5,$t2,LineA3 # jump if robot_y == 2
LineA3: # || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t2,$LineB #jump if robot_x <> 2
bne $t5,$t4,$LineB #jump if robot_y <> 4
LineAOK: # SUCCESS
la $a0, MsgFallenChasm
li $v0, 4 # specify Print String service
syscall # print heading
la $a0, robot_state
sw $t2,0($a0) # robot_state = 2
jr Done:
# Next conditional line
# Ref: else if(( (robot_x == 2) && (robot_y == 3)) || ((robot_x == 3) && (robot_y == 4)))
LineB:
Done:
add $t7, $t7, 4
add $t6, $t6, -1
jgz MoveLoop # Loop 64 times
jr $ra # return wildgoose 420 Practically a Posting Shark
Okay, have it. Go back edit and change
So that I can get line numbers![code=Asm]
So that I can get line numbers!
wildgoose 420 Practically a Posting Shark
Line#117
# bnez RJump
bgrtz RJump
# jr PrtOut
jump PrtOut
Line138
# bnez RLeft
bgtz RLeft
# jr PrtOut
jump PrtOut
Line 159
# bnez RRight
bgtz RRight
# jr PrtOut
jump PrtOut
Line 248
# jgz MoveLoop
bgtz MoveLoop
malugirl4 0 Junior Poster in Training
put where?[code=Asm] where?
malugirl4 0 Junior Poster in Training
Its giving me diff errors now:
Error in Assembly2 line 117 position 2: "bgrtz" directive cannot appear in text segment
Error in Assembly2 line 133 position 2: "jump" directive cannot appear in text segment
Error in Assembly2 line 138 position 2: "bgtz": Too few or incorrectly formatted operands. Expected: bgtz $1,label
Error in Assembly2 line 154 position 2: "jump" directive cannot appear in text segment
Error in Assembly2 line 159 position 2: "bgtz": Too few or incorrectly formatted operands. Expected: bgtz $1,label
Error in Assembly2 line 170 position 2: "jump" directive cannot appear in text segment
Error in Assembly2 line 238 position 3: "jr": Too many or incorrectly formatted operands. Expected: jr $1
Error in Assembly2 line 248 position 2: "bgtz": Too few or incorrectly formatted operands. Expected: bgtz $1,label
Assemble: operation completed with errors.
wildgoose 420 Practically a Posting Shark
Line 212
# System.out.println ("Robot State: ");
la $t0,robot_x
lw $t0,0($t0) # $t0 = robot_x
la $t5,robot_y
# lw $t5,0($t1) # $t5 = robot_y
lw $t5,0($t5) # $t5 = robot_yLine 229
# register to register compares
# Ref: if (( (robot_x == 1) && (robot_y == 2)) || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t1,LineA3 # jump if robot_x <> 1
# beq $t5,$t2,LineA3 # jump if robot_y == 2
beq $t5,$t2,LineAOK # jump if robot_y == 2
LineA3: # || ( (robot_x == 2) && (robot_y == 4)) )
bne $t0,$t2,$LineB #jump if robot_x <> 2
bne $t5,$t4,$LineB #jump if robot_y <> 4
LineAOK: # SUCCESSLine 238
la $a0, robot_state
sw $t2,0($a0) # robot_state = 2
# jr Done:
jmp Done
# Next conditional line
# Ref: else if(( (robot_x == 2) && (robot_y == 3)) || ((robot_x == 3) && (robot_y == 4)))
LineB: malugirl4 0 Junior Poster in Training
is it supposed to be .data? or main?
wildgoose 420 Practically a Posting Shark
bgrtz"
bgtz No <r>
Instead of jump use just j
wildgoose 420 Practically a Posting Shark
Sorry those bgtz 's should
have a $a0
Ex: if ($a0 > 0) then goto RJump
bgtz $a0, RJump
bgtz $a0, RLeft
bgtz $a0,RRight
malugirl4 0 Junior Poster in Training
so i replace bgtz to bgrtz
wildgoose 420 Practically a Posting Shark
No
there is no bgrtz its a typo.
the line(s) should be
bgtz $a0, ______ <--- the function label that's there!
bgtz $a0, RJump
bgtz $a0, RLeft
bgtz $a0,RRight
malugirl4 0 Junior Poster in Training
that worked
Error in Assembly2 line 95 position 9: Symbol "robot_state" not found in symbol table.
Assemble: operation completed with errors.
Do i declare it in .data?
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