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Altera_Forum
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13 years ago

Problem! Binary Divisor: Error (10028): Can't resolve multiple constant drivers

Hi! I'm trying to make a binary divisor of 4 bits in VHDL. The process i'm using to get the quotient is to compare and substract. So, what I want to do is to subtract certain binary number wi...
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Altera_Forum
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13 years ago

May be this approach is similar like yours.

a-You create a register, call it "resto" for example, with 2N bits. ( N = 4 in this case ).

b-Fill the 4 MSb bits of that register with '0'.

c-Fill the 4 LSb bits with the dividendo.

d-Substract the "4 MSb bits of resto" - divisor.

e-If the substraction is greater or equal than "0000" fill the 4 MSb of "resto" with the result of the substraction.

If the result of substraction is negativo don't change "resto".

f-Shift "resto" one position to the left.

g-Repete the procedure from step 'd' until you entered all the bits of the original dividendo.

I hope you understand me.