I have my i8042 device for vmd(8) mostly implemented. It’s only missing a few commands, but since there are no PS/2 input devices yet, there isn’t very much in the way of testing I can do beyond ensuring that commands act as they should.
I have a couple questions about expected behavior, mostly related to the 8042 output port. * The 8042 controls the CPU reset line, but I’m not sure what the behavior should be in terms of vmm/vmd. Send a reset command if the reset line gets pulled low? * The 8042 controls Gate A20, which doesn’t seem to exist in the VM. I just have the output line not hooked up to anything. That OK? * There is nothing hooked up to the PS/2 ports since adding input devices is out of scope for my current diff. * Commands F0-F3 pulse 8042 output port bits low for 6uS. How should such timing be implemented in a vmd device? Once I get these cleared up, I should have a diff ready by the weekend. The 8042 already gets detected in the OpenBSD boot process! Katherine
