NCR 7454 - Magnetic Stripe Reader; Touch Screen Controller

Chapter 1: Product Overview 1-15
Higherqualityintegratedstereospeakersmaybeaddedasanoptionto
theterminal.TheamplifierislocatedontheProcessorBoard;the
speakeroutputisprovidedonaheaderthatreceivestheharnessfrom
thespeakermodule.Inaddition,aLineOutisprovidedona 3.5mm
stereojack
thatpermitsconnectionofexternalamplifiedspeakers.
Theintegratedstereospeakers,oranamplifierconnectedtoLineOut,
mustbeusedinordertoplaySoundBlaster(audiosubsystem)audio.
However,aninternalEUIspeakerprovidesPCspeakerfunctionality
(beepsandtones)forallconfigurations.
Thevolumecontrolcanbeset
usingtheWindowsOSControlPanel.
ThereisnovolumecontrolunderDOS.
ThePCspeakersounds(suchasbeepsandtouchclicks)aredirected
intotheaudiosubsystemandareaudibleifspeakersareconnected.
Magnetic Stripe Reader
A3‐trackMSRheadisavailableasanoption.TheISOandJIScard
formatissupported.
Whencarddataisread,aninterruptisgenerated.Asoftwaredevice
driverfortheMSRmustbeloadedtoenabletheapplicationtoprocess
thedata.
Touch Screen Controller
TheMicroTouch
®
“Excalibur”chipisusedtointerfacethetouchpanel.
ThiscontrollersupportsMicroTouchcapacitivepanels.
InordertosaveanRS‐232port,thetouchdataisdeliveredtothe
systemthroughthemouseinterface.Thisrequiresamouse‐aware
touchdevicedriverfortheappropriateOS.
Whenthesystem
isoperatinginthedimmeddisplaymode,touch
activitycanrestorefullbrightnessifinstructedbysoftware todoso.
Whensystemisinlowpowermode,touchactivitycangeneratethe
mouseportinterrupt(IRQ12).