[Ernesto1924]

Hello everyone I new in using ModelSim XE III/Starter and have this project to start:

1.Write a VHDL description of an SR latch
a.Use the characteristic equation
b.Use logic gates
c.Use a conditional assignment statement
2.A 4-bit magnitude comparator chip (http://focus.ti.com/lit/ds/symlink/sn74ls85.pdf) compares two 4-bit numbers and produces a three bit output.
a.Write behavioral VHDL description for this comparator chip.
b.Using structural VHDL, cascade two 4-bit chips to make an 8-bit magnitude comparator. Include block diagram.
3.The 74194 four-bit bidirectional shift register (http://focus.ti.com/lit/ds/symlink/cd74hc194.pdf) includes an asynchronous reset, parallel load and left/right shift.
a.Write a behavioral VHDL model for the 74194.
b.How can this be extended to an 8-bit shift register? Implement in VHDL.
4.Design a counter that repeatedly counts in the sequence: 0000, 0001, 0010, 0100, 1000, 0000, …. An asynchronous load input loads the counter with 0000.

I need help for this project while in the mid-time I'm reading and getting familiar with the program...any help will be truly appreciated...

[amilcar]

Sorry, but the idea of the assignment is that you should go out and read some books.

If we solved the assignment for you, then you would have learn nothing at all.
And that contradicts the purpose of the exercise.

[lvzhichao]

it's correct what amilcar says.....

[imag3ne]

jj it is a correct

[borrows123]

My vote is for "amilcar"...
He saying 100% correct...

[rochmadp]

That isn't difficult, I know you can do it...