why does mask ?d work but mask ?a not?

[philsmd]

run

Code:

hashcat -b

or

Code:

hashcat -b --benchmark-all

or the example hashes from https://hashcat.net/wiki/example_hashes

There is no need to extract any hashes, it' just a test: try the example hashes and see if the problem is specific to a certain hash type or if the driver has indeed problems with many/most of the hash types
thx