First post, by superfury
What does trigger the BAT with PS/2 devices? Is it just when power is applied to the PC motherboard and when receiving the 0xFF reset command? Or is it sent in other cases as well? Does the 8042 enable/disable PS/2 port commands and command register(using command 0x60 to write it) have effect on said device performing a BAT?
One weird thing I notice on all AT/Compaq/i430fx motherboard is that for every byte received from a peripheral, it disables and enables the corresponding port?