VeriFone DUET Vx810, Справочное руководство

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P
ERFORMING
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OWNLOADS
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V X 810 R
EFERENCE
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UIDE
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DDL.EXE: Downloads files and data from a development system or another
host computer, directly to a V
x
810 over a serial cable connection. DDL.EXE is
a Windows program included in the Verix V DTK (Verix V Developer’s Toolkit).
Download
Content
In general, you can download files and data to a V
x
810. The types of files and
data can be grouped into the following functional categories:
•
Operating system files: A set of related programs and data files provided by
VeriFone to control the device’s basic processes and functions. Files that
belong to the OS are stored in a reserved area of the device’s memory.
A complete OS is downloaded onto each V
x
810 during the manufacture. If
necessary, download newer versions during application development, or when
preparing for deployment to on-site devices.
•
Applications and related files: An application is a computer program
consisting of one or more executables, including compiled and linked object
files (*.out), and one or more function libraries (*.lib). Most applications also
include font files (*.vft, *.fon), data files (*.dat), and other related file types.
V
x
810 applications can be developed by VeriFone, customers, or third parties
on customer request. One or more applications must be downloaded onto the
V
x
810 before it can be deployed at a customer site and used to process
transactions.
•
Files related to file authentication: The logical component of the VeriShield
security architecture in the V
x
810 is file authentication. For an executable to
run on a V
x
810, it must be authenticated by the VeriShield file authentication
module. For more information on file authentication, see Chapter 5 .
Two special types of files are required for the file authentication process:
digital certificates (*.crt) and signature files (*.p7s). These file types must be
downloaded onto the device together with the application files to authenticate.
•
Device configuration settings: Files or records that contain various types of
data can also be downloaded onto a V
x
810, including CONFIG.SYS variables,
passwords for accessing protected system mode functions, and the current
date and time (For more information on device configuration settings, see
Chapter 4 ).
NOTE
No special software tool or utility is required to perform back-to-back application
downloads. Only a serial cable connected between the two devices is required.
This data transfer procedure, invoked from within system mode, is handled by the
OS software and firmware of the sending and receiving V
x
810 devices.