This week we have been reading lots on MIPS after a mind boggling late lecture i found myself a bit confused with all the work. After going through the chapters 9 -15 on http://chortle.ccsu.edu/AssemblyTutorial/TutorialContents.html over the weekend i have a clearer understanding of MIPS. I have completed the chapter 12 and 15 programs and have commented the lines. Here is an example from Exc 3 of chapter 15s programs
Ex3.
##
## 6x^3 – 3x^2 + 7x + 2
##
## Registers to Use:
##
## $7 Accumulator
## $8 base register, address of x
## $9 value of x
## $11 polynomial
lui $8, 0×1001 # load .data memory address
lw $9,0($8) #load co-officiant x into register $9
ori $7,$0,6 # Initialize the accumulator to 6 store in $7
mult $7,$9 # multiply by $7 by $9 (6×2)
mflo $11 # store into register $11
addiu $7,$11,-3 # add -3 to (6×2)
mult $7,$9 # multiply accumulator(6×2 – 3x) by x
mflo $11 # store sum into $11
addiu $7,$11,7 # add +7 (6×2^2 – 3x + 7x)
mult $7,$9 # multiply accumulator(6×2^3 – 3x^2 + 7x) by x
mflo $11 # store sum into $11
addiu $11,$11,2 # accumulator(6×2^3 – 3x^2 + 7x + 2)
sw $11,4($8) # store back in polyno
.data
x: .word 2 # value of x
poly: .word 0 # Result is placed here.
Filed under: Console Development
