TS-5500 User’s Manual
Technologic Systems
10/31/03
24
19 Video, Keyboard, and Console Redirection
The TS-5500 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 daughter 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-5500 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-5500 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-5500. 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 keyboard
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
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 disk or from the Technologic Systems web site.
http://www.embeddedx86.com/downloads/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-5500 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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