Octagon XE-900, Reference Manual

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Plus accepts industry-standard PC/104 -Plus boards. PC/104 expansion boards are
available from several manufacturers. PC/104 or PC/104 -Plus expansion boards
may be stacked on the XE–900 SBC to form a fully-integrated system.
If your PC/104 -Plus board requires
–
12V, review the information on page 74 before
installing your card.
Video
The XE–900 SBC supports CRT monitors up to 1920 x 1440 x 24 bpp (bits per
pixel) resolution, and LVDS-compatible flat panel displays with up to 1600 x 1200 x
18 bpp resolution.
Keyboard, mouse, and speaker ports
The keyboard controller accepts an AT style keyboard and has a PS/2 connector.
The mouse port is combined with the keyboard port and is accessed with a “Y”
cable. Note that with some “Y” cables you may have to plug the mouse into the
keyboard icon, and the keyboard into the mouse icon; if the mouse and keyboard do
not function at power up, try switching them. A keyboard connects directly to the
XE–900 while a mouse requires the “Y” cable. Most operating systems do not
require a keyboard or a mouse; however, some operating systems do require both to
be connected for proper booting.
A separate connector provides for a PC-compatible speaker.
Real time calendar/clock with battery backup
The real time clock is fully AT compatible. An optional off-card battery powers the
real time clock when the 5 volt supply is removed.
Setup information stored in Flash for high reliability
Loss of Setup data is serious in industrial applications. Most PCs store Setup
information in battery-backed CMOS RAM. If the battery fails or is replaced
during routine maintenance, this information is lost. Without a keyboard and
monitor in embedded applications, time consuming re-initialization is required.
The XE–900 SBC stores the Setup information in Flash.
User-available EEPROM
An EEPROM has 1024 bytes available to the user. Software routines to use this
available memory come with the XE–900 SBC.
Watchdog timer added for safety
The watchdog timer resets the system if the program stops unexpectedly. The
watchdog is enabled, disabled and strobed under software control; it can also be
enabled or disabled in Setup. The time-out period is programmable for 1, 10 or 60
seconds.