Hello,

I've been playing around with the store buffer and write back and there are two strange things I've noticed happening.

First, when running the mmu test, the function dtlb_dcache_test() does not work when writeback is enabled. I've tracked it down to this line:

1024: mtspr (/*SPR_DCR_BASE(0)*/ + SPR_DCBIR, ea);
There is no error it just freezes.
It does work when SPR_DCR_BASE(0) is uncommented. It works either way in writethrough.

The second thing that happens is that if writeback and store buffer are implemented, there is an error at line 554 in dtlb_translation_test(). Nothing seems to be working properly. The very first condition tested fails.

Does anybody know why these things are happening?

Thanks,
Jonah