Fixed error in ata.cpp

[rgwohlbold]

Writing two times to the Low port instead of writing to the low and the high port

[Jachdich]

Oh I didn't see this, I just submitted an issue for the same thing. I'll link this.

[rgwohlbold]

Hasn't been merged in a while though :(

[Jachdich]

Yeah, seems this is pretty dead. And I can't get the (modified) PIO driver to work even after fixing it. Are there any pitfalls you know of that I could be falling into?

[rgwohlbold]

Not really... I haven't had any issues with the code except for this problem

[Jachdich]

it's probably either my port_byte_in/out function or some off-by-one error, or maybe my qemu config.