NCR RealPOS 70 - Dependencies;Assumptions;Constraints; Hardware Dependencies; Software Dependencies; Sample Code

12-10 Chapter 12: Cash Drawer Interface
Dependencies/Assumptions/Constraints
Hardware Dependencies
Constraint:Forsystemsinwhichtwocashdrawersareinuseonthe
Darlington,thedrawersmustshareastatusbitusinga‘Y’cable.
Software Dependencies
NCRWindowsNTPortDriver(NCRKMPDR.sys).
Sample Code
CPP Source File: DarlingtonCDSample.cpp
long Initialize( )
{
// Init -- I/O Port -- Standard Configuration Register Address for PCI
Devices
m_nIOConf = 0x0CF8;
// Read -- I/O Port -- If these defaults are left unchanged, errors will be
reported
m_nIOPort = 0; // R/W port for solenoid bits and status
m_nIOPort_select = 0; //R/W port for selecting GPIO Input/Output config
m_nDrawerNumber = 1; //Default
m_bPortDrvr = FALSE;
// determine if OS is WIN95 or WINNT
if (GetVersion() < 0x80000000)
{
m_nOSVersion = OS_WINDOWS_NT;
// Lock Mutex when accessing shared memory TAR 95236
WaitForSingleObject( g_hSharedMemoryMutex, INFINITE );
if ( g_hPortDrvr == NULL )