1-16 Chapter 1: 7401-2xxx and 3xxx Product OverviewAudioThe base unit has SoundBlaster-compatible audio. Wave tablesynthesis is not supported. FM synthesis and MIDI are supported inthe hardware, but requires software driver support to function.Higher quality integrated stereo speakers may be added as an option tothe terminal. The amplifier is located on the Processor Board; thespeaker output is provided on a header that receives the harness fromthe speaker module. In addition, a Line Out is provided on a 3.5 mmstereo 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 SoundBlaster (audio subsystem) audio.However, an internal EUI speaker provides PC speaker functionality(beeps and tones) for all configurations.The volume control can be set during system configuration.The PC speaker sounds (such as beeps and touch clicks) are directedinto the audio subsystem and are audible if speakers are connected.• Release 2.0 – 2.4 processor boards use a Cirrus/Crystal CS4614(PCI-based) sound controller that supports DirectX 6 sound.• Release 2.5 processor boards use an ESS Allegro ES1989 soundcontroller that supports DirectX 8 sound.Magnetic Stripe ReaderA 3-track MSR head is available as an option. The ISO card format issupported.When card data is read, an interrupt is generated. A software devicedriver for the MSR must be loaded to enable the application to processthe data.Touch Screen ControllerThe 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 thesystem through the mouse interface. This requires a mouse-awaretouch device driver for the appropriate OS.
