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Division in Assembly?

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Division in Assembly?

 
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  #1
May 4th, 2009
How can I perform Division in Marie Assembly Language? The functions available in Marie programming are for Addition and Subtraction. Any help will be appreciated.
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Re: Division in Assembly?

 
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  #2
May 5th, 2009
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Originally Posted by Rameses View Post
How can I perform Division in Marie Assembly Language? The functions available in Marie programming are for Addition and Subtraction. Any help will be appreciated.
You can do division using subtraction.
60 / 3 if I subtract 3 from 60 it will take 20 times before 60 < 3
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Re: Division in Assembly?

 
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May 6th, 2009
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Originally Posted by sysop_fb View Post
You can do division using subtraction.
60 / 3 if I subtract 3 from 60 it will take 20 times before 60 < 3
I was able to do multiplication:Input /Input A value
Store A
Input /Input B value
Store B
Loop, Load A
Skipcond 800 If AC > 0, continue loop
Jump Endloop
Subt One
Store A
Load C
Subt B
Store C
Jump Loop
Endloop, Load C
Output
Halt
C, DEC 0
A, DEC 0
B, DEC 0
One, DEC 1

Division doesn't seems to be working for me. Is there something I could change in multiplication code to make division work? Multiplication is repeated adding, similar to Division, repeated subtraction.
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Re: Division in Assembly?

 
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  #4
May 6th, 2009
Psuedocode

Assembly Syntax (Toggle Plain Text) 
  1. a = 60
  2. b = 3
  3. divide a b
  4.  
  5.  
  6. divide a b:
  7. c=0
  8. while a isn't less then b
  9. a = a - b
  10. c = c + 1
  11.  
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Re: Division in Assembly?

 
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  #5
May 7th, 2009
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Originally Posted by sysop_fb View Post
Psuedocode

Assembly Syntax (Toggle Plain Text) 
  1. a = 60
  2. b = 3
  3. divide a b
  4.  
  5.  
  6. divide a b:
  7. c=0
  8. while a isn't less then b
  9. a = a - b
  10. c = c + 1
  11.  
ORG 100
Input
Store X
Input
Store Y
Load Zero / Move 0 into AC
Store Z / Set Z to 0
If, Load Z / Load Z
Skipcond 400 / If AC=0 (Z=0), skip the next instruction
Jump Endif / Jump to Endif if X is not greater than 1
Then, Load X
Subt Y / X - Y
Store X / X= X - Y
Endif, Load Z / Load Z into AC
Add One / Add 1 to Z
Store Z / Z = Z + 1
Output
Halt / Terminate program
X, Dec 0 / X has starting value, not given in problem
Y, Dec 0 / Y has starting value, not given in problem
Z, Dec 0
One, Dec 1 / Use as a constant
Zero, Dec 0 / Use as a constant
END

What am I missing?
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Re: Division in Assembly?

 
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  #6
May 7th, 2009
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Originally Posted by Rameses View Post
ORG 100
Input
Store X
Input
Store Y
Load Zero / Move 0 into AC
Store Z / Set Z to 0
If, Load Z / Load Z
Skipcond 400 / If AC=0 (Z=0), skip the next instruction
Jump Endif / Jump to Endif if X is not greater than 1
Then, Load X
Subt Y / X - Y
Store X / X= X - Y
Endif, Load Z / Load Z into AC
Add One / Add 1 to Z
Store Z / Z = Z + 1
Output
Halt / Terminate program
X, Dec 0 / X has starting value, not given in problem
Y, Dec 0 / Y has starting value, not given in problem
Z, Dec 0
One, Dec 1 / Use as a constant
Zero, Dec 0 / Use as a constant
END

What am I missing?
Nevermind, I got it. Thanks a ton!
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