Filter
Top Products
P300H P300 Series Modem Installation and Operating Handbook Page 166
Programming Flash memory in progress /
Banks:
- \
FF FF FF FF FF FF FF FF FF FF FF FF FF
FF
FF FF FF FF FF FF FF FF FF FF FF FF
Boot, Flash Program screen
Programming complete
Press YES/ENTER to continue
Boot, Programming Complete screen
Checksumming main code....
Banks:
- - -
Boot, Flash Checksum screen
Each “FF” represents a blank 32k bank of memory. The bar in the top right hand corner spins to show
communications are continuing, and the bar on each bank in turn spins first clockwise as information is
loaded from the PC, then anticlockwise as the bank is programmed. When each bank is complete it shows
either a tick “
” when complete, a “-” if it is intentionally left empty, or an “X” if it fails to program. Any failure
to program is automatically retried, and an “X” should never reman on the screen.
Whilst the programming continues the PC report the status as messages are transferred, and displays the
percentage of the file that has been transferred. When the programming is complete, the unit prompts the
operator as follows, and the PC returns to the DOS prompt:
At this point the processor re-boots. The first reboot with a new main code the unit performs a checksum
test on each bank, displaying the results as follows:
Finally, when the checksums are verified, the processor jumps into the new Flash code, and begins
execution of the latest version of the embedded M&C code. Should the code fail to execute properly, hold
down the No/Prev key to clear the memory.
Should the program ever crash, or be otherwise reset (other than from power up), it will automatically do
an extensive checksum test as above. However from a normal power up, where it may be critical to restore
the service as quickly as possible only an abbreviated test is performed, and the screen above will not be
displayed.
10.2 OTHER BOOT CODE OPTIONS
The other options available from power up, by holding in a key on the keypad are:
MAIN Stay in boot code for serial download
NO/PREV Clear the non-volatile memory
0 Set the LCD contrast to mid scale
1 Display Boot Code software version
The following options allow a fully equipped P300 to act as a model with fewer options to enable testing
of a lower specified product to see if it provides the facilities required.
4 Reduce the functionality to P300-VSAT level (from a higher level only)
5 Reduce the functionality to P300-IBS level (from a higher level only)
6 Reduce the functionality to P300-IDR level (from a higher level only)