InFocus Laser Platform M-300 - Manual (Page 36)

System Operation 3-11
There are two ways that a downloaded file will have a missing EOF. The first is if printing
through the printer driver and printing is canceled, interrupted, or file size exceeds the remaining
free memory space. If this occurs, chances are that the EOF never made it to the memory
buffer and the memory buffer will show that it is empty or that the file does not exist. Part of the
file might still remain in memory and might become mixed up with other files. This is why having
the ability to insert an EOF marker from the control panel of the laser system is very important.
In order to delete that partial file, the memory buffer must either be cleared entirely or an EOF
must be manually inserted into the memory buffer. Inserting an EOF is the better choice here
because the partial file can be deleted without disturbing the other files in memory. Secondly,
when using DOS based programs, a printer driver other than the Windows printer driver must be
used. DOS printer drivers do not know to send the required EOF to the laser system after file
downloading. Again, the memory buffer will not recognize any file that exists if it does not have
an EOF. In this case, an EOF must be manually entered into the memory buffer after each and
every file download from a DOS based program. Since DOS printer drivers also do not send the
name of the file within the file data, every file will be called “NONAME” once an EOF marker has
been inserted. To distinguish one “NONAME” file from the next, the display will number the files
in the order from which they were downloaded.
To insert an EOF marker in either case, position the cursor on the first line of the display where
the filename is. Press and hold down the “NEXT FILE” button and then press the “SELECT”
button at the same time. The word “NONAME” will appear if there is a partial file in memory or
any DOS based file that does not have an EOF marker. What has happened is that the laser
system searched for any file information that had entered into the memory buffer since the last
completed file was downloaded. If it finds information, it scans to the end of the last bit of that
information and inserts an EOF. The file then shows up on the display as “NONAME” and will
allow either its solitary deletion without having to delete the other files in memory or it will allow
the file to be run just as if it was downloaded from the Windows printer driver.
MAIN Menu
Allows access to all other menus.
MEMORY CONTROL Menu
The laser system is equipped with an intelligent memory buffer that has built-in file compression.
The amount of RAM installed in your system is optional at the time of purchase. The minimum is
4 Megabytes and the Maximum is 32 Megabytes.