KI-1981A MRC7600—Installation, Programming and Operations Manual
Page 22 of 48 (06/30/98)
5.
Attempt your download again, closely following all of the steps set forth above.
6.
Once you have successfully downloaded the firmware, click
([LW
on the
+H[
'RZQORDG ZLQGRZ
¾
The TMRC main window will reappear.
MRC7601 RAM & EPROM Modes
The MRC7601 features both RAM and ROM operating modes. As their names
suggest, RAM firmware resides in a static RAM chip; while ROM resides in an
EPROM chip. Under normal operating conditions, the MRC7601 will function in
RAM mode. If RAM firmware is corrupt, however, the unit will automatically
switch to ROM mode.
When the MRC7601 is powered on or reset (reset button), it initially starts
executing "boot" ROM code (residing in the EPROM chip). During initialization in
the ROM mode, the MRC checks the integrity of firmware located in its RAM
chip. During ROM initialization, the front LED remains off. If the firmware passes
its integrity test, execution switches to the RAM firmware. At that time, the front
LED flashes the major and minor RAM firmware version numbers. If the RAM
firmware does not pass its integrity check, the MRC7601 remains in ROM mode,
and the front LED continuously flashes on and off.
In RAM mode, the MRC7601 has the full range of functionality described in this
manual. In the ROM mode, however, the MRC7601 has very limited capabilities. It
does not, for instance, have the ability to answer calls, to control audio-visual
equipment, or to use the TMRC configuration window to change system settings. It
will, however, allow a user to download new firmware in coordination with the
TMRC. It also will allow a user to operate the TMRC Terminal Window and carry
out limited monitor mode commands, such as displaying memory contents and
firmware version numbers.
MRC7601 Programming
Version Window
The “version” window displays both the graphical interface and MRC7601 version
in “Remote-device” mode and only the graphical interface version in “Stand-alone”
mode: