Avalon read\write

[Altera_Forum]

Hi, 

 I am supposed to make my own custom component which will do 256-bit and operation. I want to write a VHDL code which will read data in parts as Nios II is 32-bit.  Kindly suggest how to read 256 bit data using VHDL.   Pingoo

[Altera_Forum]

I would create an Avalon with a 32 bit interface and 3 address bits. 

Using the 3 address bits, you can select the correct part of your 256 bit vector.

[Altera_Forum]

Thanks for the reply. 

 I am new to VHDL so didn't get your point. Can you please elaborate?   Pingoo

[Altera_Forum]

Ah! 

Sorry, but teaching VHDL is a bit outside the scope of my contribution to this forum.  I suggest that you start by learning a bit of VHDL first, then take a look at the Avalon-MM documentation, then revisit your project.

[Altera_Forum]

Hi, 

 I am working on the similar problem but I am using 128-bits. while generating my sopc file, I am getting following error   Warning: 32-bit master connected to 128-bit slave with no byte enables (cpu/data_master -> mycomp_add/slave) at c:/altera/91/quartus//sopc_builder/bin/europa/europa_utils.pm line 248.  Can you suggest the solution.   Thanks, Mumble.