Unique Software Interface; I/O Devices - IBM 4800-741 Hardware Service Manual

Updated July 14, 2008
Models 7x2
The POS USB PC ports are all driven from the POS riser card and comply with the
USB 2.0 standard. These controllers are all Universal Host Controller Interface
(UHCI) or Enhanced Host Controller Interface (EHCI) compliant.

Unique software interface

For the software programmer, the SurePOS 720 appear as a PCI-based PC system
unit with the usual PC peripherals . The unique POS function is packaged on the
PCI riser card. The following unique functions are also provided in the system unit:
v Two PCI feature card slots or optionally on the Models 742 and 782, 1 PCI and 1
v 128 KB of nonvolatile random access memory (NVRAM)
v A ROM that connects to the system ROM during POST to provide additional
v An interface to the RS-485 (EIA 485) subsystem, if the system is equipped with
v An interface to the POS USB subsystem. IBM drivers and operating systems

I/O devices

SurePOS 720 support a wide range of displays, keyboards, printers, cash drawers,
and scanners. See the IBM Retail Stores Web site at http://www.ibm.com/solutions/
retail/store/support, for a list of currently supported devices.
Note: Additional I/O information is available in the following publications:
x1 Lane PCI Express feature card slots
function and information
RS-485 ports. IBM drivers and operating systems isolate these changes from the
application.
isolate these changes from the application.
USB I/O devices
SurePOS 700 Series: Options and I/O Devices Service Guide,
SY27-0392
RS-485 I/O devices
Store Systems POST I/O Devices Installation and Operation Guide,
GA27-4028
Chapter 1. Introducing the SurePOS 700 Models
17