Chapter 1: Product Overview 1-9
• 100MHz system bus
• 64 MB memory with ability to add SODIMMS to increase the
memory capacity of the terminal
Video Subsystem
The Release 2.x Motherboard uses the Silicon Motion (SMI) (LynxEM4
or LynxEM4+), with 4MB internal memory, 64 Bit memory bus, AGP
1x Support, 66MHz bus interface through AGP port, TFT panel support
up to 1280x1024.
The video subsystem supports the following LCD types:
• 12.1-Inch active matrix (TFT) 800x600 with 64 k colors
• 15-inch active matrix (TFT) 1024x768 with 262 k+ colors
Support for the LCD integrated display is provided internally. External
support for SVGA monitors (800x600) [or better] resolution and 64 K
[or better] colors) is provided by a CRT 15-pin D-shell connector.
The LCD brightness is software controlled. The terminal does not have
hardware controls for brightness or contrast.
The LCD back lighting is also software controlled. In addition to OFF
and ON modes, a dimmed mode is supported in the hardware to permit
increased tube life. If appropriate software drivers are loaded, full
brightness is restored when touched, motion detection (Motion Sensor
section), or an application request (i.e., to play promotional material on
a preset schedule).
Dual Displays
The Summa POS Motherboard is dual display (LCD and CRT) capable.
In a dual display environment the 7454 terminal supports 16-bit color
when both displays are connected to the motherboard. Both displays
must have the same maximum resolution capability. Refer to the
following information for details about the implementation of a dual
display configuration.
