How to specify memory initialization files for multiple instances of one Nios design?

[Altera_Forum]

I want different applications running on multiple instances of a common Nios design. How do I specify unique memory initialization files? Put another way, how do I specify a memory initialization file outside of Qsys? 

(I rather not have two Nios designs and two BSPs, different in name only.)   // for example: // two instances of "nios_cpu..." nios_cpu cpu0 (...); // this one should use cpu0_mem_init.hex nios_cpu cpu1 (...); // this one should use cpu1_mem_init.hex   Thanks!  (This question was formerly posted as "Unique Memory Initialization Files for Multiple Nios Instances" but no useful replies were received.)