22 Jan
2012
22 Jan
'12
2:44 p.m.
On Sun, Jan 22, 2012 at 11:08 AM, Eric Smith <eric at brouhaha.com> wrote:
The USB HID spec stupidly limits USB keyboards to reporting a maximum of six
key depressions. I have not seen *any* USB keyboards with diodes or other
antighosting. ?Maybe some of the high-end "gaming keyboards" do.
Are you referring specifically to the operation of a USB HID keyboard
in boot protocol mode? While it is true that a USB HID keyboard input
report while in Boot Protocol mode contains one byte for modifier keys
and six bytes for keycodes, that restriction does not apply when the
keyboard is not in boot protocol mode when the OS is running and
talking to the keyboard instead of the BIOS. Guess I'm missing the
supidity to which you are referring to here.
-Glen