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X1^ = Event data to write
X1& = Number of bytes to read
X1* = Pass-through sync status 0 = No sync detected 2 = H sync detected
1 = V sync detected 3 = HV (composite) sync detected
X1( = Bytes of memory used nnnnnnn (bytes)
X2) = Firmware version n.nn
GSS-initiated (Unsolicited) Messages
When a local event, such as an equipment power-up, occurs, the GSS responds by sending
a message to the host. The GSS-initiated messages are listed in the following pages. The
messages are underlined.
The GSS does not expect a response from the host, but the host program may request a new
status.
Power-up
(c) Copyright 2010, Extron Electronics, GSS 100, Vx.xx
]
The GSS 100 issues the Copyright message (above) when it rst powers on. Vx.xx is the
firmware version number.
Image selection
Take
]
Bsy1
]
Bsy0
]
The GSS issues the above sequence of commands when a front panel image selection
operation or a slide show image change occurs.
The Take message indicates the change of output image.
The Bsy1 message indicates to the connected control device that the GSS is busy
processing the cut or dissolve transition and is unable to respond to input commands.
The Bsy0 message indicates that the GSS is no longer busy and can respond to input
commands.
Switch effect
Eff
X#]
The GSS 100 initiates the Eff message when a front panel change in the image switch
effect takes place.
Dur
X#]
The GSS 100 initiates the Dur message when a front panel change in the dissolve duration
takes place.
GSS 100 Graphic Still Store • Programming Guide 19