Symbol PDT 7200 series Reference Manual page 91

The second and fourth lines of this screen reflect the selections made on the Area Selection
and Baud Rate menus, respectively. This screen continues to display until the first character
of the image to be downloaded is received from the host. While this screen is displayed,
pressing the Enter or Cursor Up/Down keys on the keyboard returns IPL to the Area Selection
screen.
As soon as the first character of data is received, IPL displays the receiving screen:
The top line of this screen identifies the area selected in the Area Selection screen. Once a
character has been received, IPL stays in this screen until an entire image has been received,
or until an error is detected. The only other way to exit from this screen is to reset the terminal
by holding the power switch down for 16 seconds. As more data is received, the Receiving
Screen is updated to reflect the current status. The first record in the image identifies the area
to be processed. When IPL receives the record, it verifies that the area is valid, and updates
the Receiving screen as follows:
The top line of the display identifies the actual area being processed. The remainder of the
display identifies the number of 8Kbyte pages to erase, receive and write. To process the data,
IPL must receive, erase, and write the entire image. With the exception of the disk images,
IPL receives the entire image before starting the erase, and completes the erase before starting
to write. With disk images, IPL multiplexes all three operations as data is received.
Eventually, (assuming no errors), all three counts reduce to 0.
Multiple Images
Pages to Erase
Pages to Receive
Pages to Write
Boot Loader
Pages to Erase
Pages to Receive
Page to Write
Configuring the Terminal
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