mirror of
https://github.com/hsoft/collapseos.git
synced 2024-12-27 04:38:06 +11:00
17 lines
608 B
Plaintext
17 lines
608 B
Plaintext
|
Keyboard driver
|
||
|
|
|
||
|
|
Low layer range: 566-568
|
||
|
|
|
||
|
|
Implement a (key) word that interpret keystrokes from the
|
||
|
|
builtin keyboard. The word waits for a digit to be pressed and
|
||
|
|
returns the corresponding ASCII value.
|
||
|
|
|
||
|
|
This routine waits for a key to be pressed, but before that, it
|
||
|
|
waits for all keys to be de-pressed. It does that to ensure
|
||
|
|
that two calls to _wait only go through after two actual key
|
||
|
|
presses (otherwise, the user doesn't have enough time to
|
||
|
|
de-press the button before the next _wait routine registers the
|
||
|
|
same key press as a second one).
|
||
|
|
|
||
|
|
(cont.)
|