Changes between Version 3 and Version 4 of DiffFromUnix

Timestamp:

2012-05-02T08:40:23Z (12 years ago)

Author:

Jiri Svoboda

Comment:

Details on the 'no serial terminals', copied from ticket #440

DiffFromUnix

@@ -21 +21 @@
 == No serial terminals ==
 
-To Be Written.
+In the world of UNIX-like operating systems command-line applications can make use of a pseudo-graphical UI via [n]curses or a similar library. This provides commands like move cursor, set color, etc. Conversely keyboard input (including some control keys like arrows, Page Up, etc) can be retrieved by the application. However only a dumb serial line / character device is assumed to connect the application to the console.
+
+Therefore all the pseudo-graphical commands are marshaled into a character stream (escape sequences) by the curses library and unmarshaled by the console. Conversely the keyboard input is marshaled by the console and unmarshaled by the curses library. This is the common cause of many problems.
+
+In HelenOS the application talks directly to the console via an IPC interface.
 
 == No X ==