I think there were a few early amd64 systems with genuine ps2, and I think you can still get one, but it wasn’t common, and honestly it’s probably usb->ps/2.
To be a pedantic asshole: mov eax, ecx? Unless you’re commenting on the insanity of interrupt driven i/O in the modern age of high performance, deep-pipelined superscalar OOO cores.
You’re right, but rax is amd64.
I think there were a few early amd64 systems with genuine ps2, and I think you can still get one, but it wasn’t common, and honestly it’s probably usb->ps/2.
To be a pedantic asshole: mov eax, ecx? Unless you’re commenting on the insanity of interrupt driven i/O in the modern age of high performance, deep-pipelined superscalar OOO cores.