array of parameters issue (IUS61)

1) I found the following issue about the initialization of an array of parameters:


package simd_pack;

  parameter    ports_num                           = 4;       // ports number 
  parameter    [ports_num-1:0]px_num      = '{ports_num-1:8,default:4};    // pixel num x port

endpackage : simd_pack

when I print the values of the array I got:

INFO: px_num 0
INFO: px_num 0
INFO: px_num 0
INFO: px_num 0


Is it  an issue of the IUS 06.11-s004 version ?

2) If I use the following definition:

integer    px_num[ports_num-1:0]      = '{ports_num-1:8,default:4};    // pixel num x port

then  it works

INFO: px_num           4
INFO: px_num           4
INFO: px_num           4
INFO: px_num           8

but in this case I cannot pass the array element as parameter to a module, because I got the following
error:

    swf_bfm #(.port_id(i),.pxn(px_num[i]))  u_swf_bfm (
                                      |
ncelab: *E,NOTPAR (../tbench/tb_swf.v,157|38): Illegal operand for constant expression [4(IEEE)].

3) If I define the array as unpacked array, I got the known IUS limitation:

parameter    px_num [ports_num-1:0]     = '{ports_num-1:8,default:4};    // pixel num x port


parameter    px_num [ports_num-1:0]     = '{ports_num-1:8,default:4};    // pixel num x port
                    |
ncvlog: *E,SVARPA (/IPREUSE/DATABASE/INTERNAL/DIG/INPROGRESS/gborgo/simd_A0_a/generic/rtl/svlog/simd_pack.v,21|20): Unpacked array and string parameters are currently not supported.
parameter    px_num [ports_num-1:0]     = '{ports_num-1:8,default:4};    // pixel num x port

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

How can I solve the following issue ?
I'd need  to define an array of constants and to pass a single element of the array as parameter
of a module.


Thanks
BR
Giampiero