Functional Blocks
9
OUTPUT CONNECTORS
The zPM11 includes two output connectors. The topics that follow provide descriptions of the
individual connectors. Connector assignments are listed below.
J2 Optional Feature connector
J3 Video Output connector
Optional Feature Connector
J2 is an Optional Feature Connector available for video overlay applications or for driving flat panel
displays that use a Feature connector interface. The Feature connector uses a 26-pin, double row,
0.100 inch spaced header and is located at the edge of the zPM11 near the video BIOS EPROM
socket. See the "J2 VESA Optional Feature Connector Pinout" table in Appendix A for pin definitions.
Video Output Connector
J3 is a 16-pin, dual row, 2 mm Video Output Connector that is used to pass the video signals down to
the CPU. See the "J3 Video Output Connector Pinout" table in Appendix A for pin definitions.
VIDEO SELECT CIRCUITRY
A unique feature of the zPM11 is its ability to share monitors and keyboards with other zPM11s when
in a Ziatech STD 32 STAR SYSTEM™. This feature is controlled by the CPU's on-board
video/keyboard select circuitry. The circuitry consists of a video switch and a software-controlled
video select signal. Up to seven zPM11s can be daisy chained in a STAR SYSTEM to share a
common display and keyboard. Using software control, you can "hot key" to the next single board
computer in the system with a simple <Ctrl> <Alt> <Spacebar> key sequence.
The software control for the video select circuitry has been incorporated into the STAR SYSTEM
BIOS and is thus transparent to the user. For more information on this function, see your
STD 32
STAR SYSTEM User's Manual.
Caution: When developing multi-video applications, debug the software thoroughly to prevent the
possibility of more than one zPM11 driving the video and keyboard at the same time. A condition
that could cause permanent damage to the zPM11.
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Содержание zPM10-2
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