IPC/NETIPCFW-1A: User Documentation
DOC/NETIPCFW-E; V3.0
3 Boot Loader
The boot loader target program is pre-loaded in the NETIPC board and has the following main
functions:
–
Download of an operating system (first use of the NETIPC);
–
Download of a ROM-Drive into the Flash-Memory of NETIPC;
–
Upgrade BIOS, BIOS-Extensions (VGA-BIOS) and boot loader firmware in case
of new releases.
The NETIPC has three operating modes, which are selected via the configuration of pins on the
keyboard connector of the NETIPC board (see the manual DOC/IPC_NETIPC for detailled
information). A specially configured dummy keyboard connector may be used for a convenient
selection of the operating mode (see NETIPC manual for detailled information). The operating
modes of the boot loader are:
RUN Mode:
Starts Up BIOS, operating system and the applications software
(see Fig. 1);
Boot-Load Mode:
enters the boot-load dialog with the Boot Loader host-program
running on the PC connected to COM1 (RS-232);
Diagnostic Mode:
special factory configuration mode with diagnostic output to a
terminal via COM1 (RS-232 at 9’600 bit/s with n/8/1 character
format).
3.1.
Boot Loader Program
The host-computer part of the Boot Loader program
winld.exe
is installed on the PC (see
chapter 1.3) and maintains a dialog with the NETIPC board (i.e. with the target part of the Boot
Loader program) via the serial RS-232 Line COM1 of the target. The Boot Loader program can
be initialized to use the COM1 or the COM2-port of the PC. The COM-port of the PC will be
correctly initialized by executing the INIT-command.
winld.exe
is a WIN32 application program running on Windows NT/2000/XP. For host
computers running a MSDOS compatible operating system (not a DOS-Box !) the DOS Boot
Loader program
dosld.exe
is available in the same directory. The DOS Boot Loader uses the
same command syntax and command files as the current Windows version.
3.2.
Boot Loader Commands
You can display the available commands of the Boot Loader program by entering „?“ after the
prompt: a list of commands is displayed. Additional details (parameters) are displayed in the
next window.
The most important commands are:
init
Initializes the host-computer COM-port with the inputted parameters
Note: requires e.g. the following parameters: init com1 baud=57600
init1
Initializes the host-computer COM1-port with the following parameters:
COM-port 1, baud-rate 57600 bit/s (Note: init1 is not a built-in command, but
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