ncr/doc/RealPOS/7455/Technical_Manuals/7455_Re... - Alsys Data

Chapter 1: Product Overview 1-17
Flash Disk
An optional 32 MB Flash Disk provides non-volatile storage that is
additional to and separate from the hard disk, allowing storage for
items traditionally placed in retail CMOS (e.g., hard totals). OPOS
drivers are available to support the Flash Disk.
Flash Disk Interface
The board provides support for a Flash Disk array in the form of an M-
Systems DiskOnChip ® . A 32-pin socket is provided for this feature. The
Flash Disk must be installed and enabled in BIOS Setup.
Power LED
The Processor Board provides support for an external power LED
through the on-board Motion/Power LED connector. This LED is
controlled through the SMC 37C935 GPIO pins. Once the SMC chip is
programmed to support the Power LED function on GPIO pin 13, the
LED is turned “on” anytime all power to the Processor Board is good.
The system’s power management software has the option to turn the
LED “off” indicating the system is in a power-managed mode.
MSR
The MSR interface supports a maximum of 3 tracks of magnetic stripe
information for support of ISO and JIS format cards. Activate the MSR
interface by enabling it in BIOS Setup, under IO Configuration. The
MSR interface controller is a memory-mapped device, which can reside
at system memory address CA000, CC000, or D0000. If MSR capability
is not desired, it may be disabled through BIOS Setup.
Graphics Subsystem
The 7455 Retail Terminal is equipped with an SMI Lynx SVGA
LCD/CRT 3DM graphics controller with 8 MB of integrated
synchronous graphics DRAM.
The Processor Boards support linear addressing by creating a “hole” in
the memory address space at the 63 MB boundary. When the system is
configured for 64 MB and linear addressing is enabled, the last 1 MB of
system memory is unusable; therefore, the board will report that total
available system memory is 63 MB.