I have some questions regarding TTY/Keyboard I/O and would appreciate
it very much if someone can point me to the relevant documentations.

1. What is the clock frequency of the keyboard's embedded
microprocessor? Is it synchronized with the 8042 when transferring
data, or does the keyboard run a little bit slower?

2. Where can I find information on graphics adaptor programming? The
series of outbytes in con_loadfont() are very hard to understand for
me? What does each of those outbytes mean?