Only if you are interested: You may want to check out XASMAVR at "https://github.com/haXample".
This new repository comes with a test-suite of nine .ASM avr-files that can serve as a reference,
Setting "#define XASMAVR" some open issues will come up when assembled with AVRA.EXE.
XASMAVR.EXE seems to be ok in all these cases.
Best regards ha.