2-8 Chapter 2: 7401-4xxx Product Overview
Video Subsystem
The video subsystem supports the following LCD types:
• 15-inch active matrix (TFT) 768x1024 with 64 k colors
Support for the LCD integrated display is provided interna lly. External
support for SVGA monitors (800x600 [or better] resolution and 64 k [or
better] colors) is provided by a CRT 15-Pin D-she ll con nector.
The LCD back lighting is also software controlled. In a d dit ion to OFF
and ON modes, a dimmed mode is supported in the hardware to allow
increased tube life. If appropriate software drivers are loaded, full
brightness is restored when touched, mo t ion de te ct ion (M otion Sensor
section), or an application request (i.e., t o play p r om otional material on
a preset schedule).
Ethernet 10/100Base-T LAN Communications
The 7401-4xxx terminal has an Intel 82559 LAN Controller that
supports 10/100Base-T Ethernet. Ethernet 100Base-T is also known as
"Fast Ethernet." The Boot ROM for diskless boot functiona lit y is
included in the 1 MB system ROM. The hardware is compatible wit h
the TCP/IP, DHCP, and TFTP protocols required for remote boot of
the platform. Appropriate software must be used to enable each
protocol used over the Ethernet link.
The terminal may be connected to either a 10 MB/s or 100 MB/s
Ethernet connection. The hardware a u t oma t ica lly se le ct s the correct
speed (if enabled by software to do so).
The LAN hardware supports wakeup packet capability as define d in
the Device Class Power Management Specification , Network Device
Class (available from Microsoft's web site).
When the platform is in the Soft OFF state (refer to the Advanced Power
Management section that follows), re ce ip t of a Wak eup Packet on the
LAN can retu rn the system to the ON stat e, if this fe a ture is enable d by
software.
Note: Due to limitations of the LAN controller and the OS, all feature s
described in the Network Device Class sp ecifica t io n m a y n ot be
available.