Video, Keyboard, And Console Redirection - Technologic Systems TS-5700 User Manual

TS-5700 User's Manual Technologic Systems http://embeddedARM.com/

18 Video, Keyboard, and Console Redirection

The TS-5700 has no video controller or keyboard interface. This was done to keep the board size small and the
cost low. For applications that require it, a PC/104 video board can be added to the system easily. Technologic
Systems recommends the TS-9500, a PC/104 peripheral board with video, keyboard, mouse, and Compact
Flash. This is extremely useful in speeding up the development phase and shortening the time to market. With
the TS-9500 installed, developers can develop right on the target board with any compiler or debugger of their
choice (such as the Turbo C compiler or debugger).
Without a video board in the system, the TS-5700 can redirect all console activity to the COM2 serial port.
Simply connect an ANSI terminal (or emulator) to COM2 with a null modem cable, using serial parameters of
9600 baud, 8 data bits, no parity, 1 stop bit, and make sure jumper JP2 is installed. (JP4 will change the console
to 115.2K Baud) All text information that would normally be displayed on a video screen is now displayed in your
terminal window, and any serial data sent to the TS-5700 is seen as standard keyboard input by programs.
Please note that the console redirection support is limited by the fact that there is no actual video or keyboard
hardware on the TS-5700. Programs must use the standard BIOS routines for display and keyboard input, which
are rerouted to the serial port. Any program that accesses the video or key-board hardware directly will not work.
Keyboard redirection is limited simply because most of the extended keys on the keyboard (function keys and
Alt key in particular) are not sent by the terminal emulator. For these reasons, the console redirection feature is
meant more for system development, testing, and field repair, rather than as the primary user interface for a
finished product.
If your application uses COM2, removing the jumper JP2 easily disables console redirection.
If you wish to use a different serial port and / or baud rate for the console, the CONSOLE.EXE utility allows
these modifications to be made. Please see the appropriate application notes for further details, available on the
utility CD.
ftp://ftp.embeddedarm.com/old/old-software-pages/Manuals/ap-100.pdf
If a video board is installed on the PC/104 bus, the video BIOS on the graphics card will automatically replace
the standard video routines (INT10h), disabling both the LCD display and the console redirection to COM2,
regardless of the state of jumper JP2. If a video board is present, all console input is disabled and the TS-5700
will only accept input from a standard PC keyboard.
If LCD and/or Matrix keypad is enabled, the console must be directed to standard I/O. If a TS-9500 is present,
with video/keyboard enabled the standard output will be directed to video, even if the LCD is enabled, if the
Matrix keypad is enabled the PC keyboard and the Matrix keypad will work at the same time.
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