Problem using DPRAM

Hello,

I have problem using DPRAM..

I am connecting NIOS II with portB of altsyncram,

portA of altsyncram with external pin for my DPRAM.

I can connect NIOS with portB of altsyscram using SOPC Builder,

but I have problem connecting portA of altsyncram to external pin.

What I need to know is how to connect:

data_a[]

address_a[]

wren_a

q_a[]

and

addr[] (input)

data[] (bidir)

cs_n (input)

rw_n (input)

I tried connecting as follows:

addr[] <-> address_a[]

(cs_n nor rw_n)<->(wren_a)

and tried connecting

data[] <-> (data_a[], q_a[])

using lpm_bustri or tri, but cannot read & write well.

What actually happens is, it writes unexpected data

to unexpected places when I try read/write..

I think my problem is the way I am connecting

data[] <-> (data_a[],q_a[])

I also tried connecting the expernal pin to dff,

but would not work.

Any advice would be great.