Urgent :)

[Altera_Forum]

Hi everyone, for a project I was given my specs. 

'Implement a shifter with combinational logic than can carry out the following tasks. The shifters functionality should be verified with a ModelSim testbench'.  Control 0: 4-bit value will be shifted left by the number of places specified by a 2-bit value  Control 1: 4-bit value will be rotated right by the number of places specified by a 2-bit value.  Havent a clue, so if anyone knows a similar program, do tell   Cheers.

[Altera_Forum]

well you have 3 inputs. 

 a 4 bit output value a 2 bit "shift by X value and an direction bit  I would have thought that was pretty self explanitory - exactly what are you stuck on?

[Altera_Forum]

Well we hardly have got an introduction to vhdl at all. Like we've only been at it for 2 weeks and he gives us a assignment like that, I haven't a clue even really on how to start it. So I'm stumped for every section!

[Altera_Forum]

I suggest getting a good VHDL tutorial or text book (dont you have libraries on campus)?

[Altera_Forum]

Try drawing a circuit diagram on paper using and/or/nor/etc. gates. It should get you close if you are using schematic entry. 

 Otherwise, if you are programming in VHDL or Verilog, look for a good template to start with. I do agree with Tricky though, a good book is a wonderful thing.

[Altera_Forum]

Yeah a book is a great thing but ive left it sort of late haha. Due today. 

if anyone has a code, you know where i am lol

[Altera_Forum]

Lol - enjoy the fail.

[Altera_Forum]

haha cheers :P