SOPC Builder

for examples , i don't know when , but in the future i wish to create a user

custom component that read and write external digital I/O

My component will have output pins (8 for databits , 4 for address bit )

and like as a parallel bus , it reads data from other electronics cards

like as an data acquisitions system .

I want to read 32 + 32 +32 +32 input and write 32 +32 +32 +32 +32 output digital I/O.

In my component , i suppose i must to provide a multiplexer that read

this data from external system , and after i want to "send" this data to the

NIOS II processor

The custom componet avalon bus said i can to use 4 word register .

One of these registers is the address and the other one is data (read o write 32 bits) .

In this case i must to declare in my system N component (Ndatabits /32 ) or i can to declare just one and work with register address in avalon bus?

From documents i saw that every user component has 4 word 32 bits register , but i don't understand wich is the address , wich is writedata , wich is the chipselect (may be this one is automatically generate by Avalon bus)

I'm reading fisher's examples and also pwm axamples from Altera

I studied several tutor and manuals , but sorry http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/unsure.gif i never understand

this concepts very well

So i&#39;m not sure to understand good

It&#39;s very embarrassing situation , mine situation and i don&#39;t want to

make noises to everybody .

ciao

walter