SOPC Builder and nios ii help

Thanks Mark

I've got another issue, while adding my top level variables in SOPC (so as to get them

in system.h while building my hello_led.c in NIOS II), i'm facing signal width

compatibility issues. The following are my input and output in toplevel;

input clk,

input reset,

//inputs from low-level software (MAC/PHY) to my toplevel

input [31:0] data_in_from_ethernet,

input [1:0] data_in_from_ethernet_type,

input cpu_ip_done,

input [7:0] cpu_ip_index,

input cpu_arp_done,

input [2:0] cpu_arp_index,

//inputs exchanged to my other modules

input data_out_from_app_valid,

input [31:0] data_out_from_app,

input [31:0] dest_ip_addr,

input [15:0] dest_port,

input [15:0] data_out_from_app_length,

//outputs from low-level software (MAC/PHY) to my toplevel

output ack,

output cpu_ip_ready,

output [47:0] cpu_ip_mac,

output [31:0] cpu_ip_data,

output [7:0] cpu_ip_length,

output cpu_arp_ready,

output [47:0] cpu_arp_mac,

output [31:0] cpu_arp_data,

//outputs exchanged from my other modules

output data_in_to_app_valid,

output [31:0] data_in_to_app,

output [15:0] input_port

By default, it takes signal type as "export" and interface as "avalon_slave_0", which results in;

# 2012.04.08 23:24:40 (*) Running Generator Program for cpu_0

ERROR:

slave (toplevel_inst/avalon_slave_0) data width is 0

Error: Generator program

for module 'cpu_0' did NOT run successfully.

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I tried setting all possible options for input and output, unable to proceed especially "cpu_ip_mac"

whose width is 48 is not workingout.

Is there an option to handle this width issue?

Thanks

Liana