VeriFone VX 520 Specifications Page 105

  • Download
  • Add to my manuals
  • Print
  • Page
    / 190
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 104
PERFORMING DOWNLOADS
Use of RAM and Flash Memory
VX 520 R
EFERENCE GUIDE 105
Physical and
Logical Access to
File Groups
The VX 520 operating system controls physical access to GIDs 1–15 using
password-protected terminal manager functions.
To download data into a specific file group, first enter terminal manager and
choose the target group by making the appropriate menu selections, then, enter
the correct password for that file group.
Each file group has its own CONFIG.SYS file. The CONFIG.SYS settings of the
selected target group are used as the system parameters for the download
operation.
The system of file groups also imposes some logical restrictions on which files can
download into specific file groups:
If GID1 is selected as the target group in terminal manager, you can download
files into GID1 and redirect files into any of the other file groups, as required, in
the same download operation.
If another file group is selected as the target file group, you can download files
only into that group and redirect files only to GID15. For example, if you select
GID5 as the target group for the download, files can only download into GID5
and be redirected to GID15.
Use of RAM and
Flash Memory
The VX 520 application memory partition has two separate file systems:
RAM (battery-backed volatile memory, also called SRAM), partition
designator I:
Flash (non-volatile memory), partition designator F:
Having two different file systems has the following important implications for data
transfer procedures:
Depending on the requirements of a specific application, some files must
download into RAM and others into flash.
There are also rules that restrict which types of files you can download and
store in a file system (RAM or flash).
With application files, the application designer or programmer usually decides
which file types to download into which file system. Other file types, such as
operating system files, digital certificates, and signature files, must download into
RAM.
In a typical download procedure, all files are loaded into the RAM file system of
the target group selected in terminal manager. Specific files included in the
download package must be redirected, as necessary, to the flash file system of
the target group or to the RAM or flash file system of another file group.
Page view 104
1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 189 190

Comments to this Manuals

No comments