altera veriog "argument 0 to readmemb must be a string literal"

[permute]

parameter FILE = ""; // modified by instantiation
...
$readmemb(FILE,ram);


Is there anyway to convert a string literal provided by a parameter into a string literal usable by readmem?

this code does work in XST, and altera even provides an example of using readmemb, but they hard code the filename in the example.

 

[permute]

Thus far I've got a workaround in place, but I'd prefer it to work properly. I've made a file called ram_init.txt with an if-else structure with lines like:
if (FILE == "filename") $readmemb("filename",ram);

Then I just `include ram_init.txt within the initial block. It at least allows me to pass the filename as a parameter, even if it is a bit silly.