XESS XStend, Руководство пользователя

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Listing 3: Connections between the XStend DIP and pushbutton switches and the XS40.
# DIP SWITCH CONNECTIONS
NET DIPSW1
LOC=P7;
NET DIPSW2 LOC=P8;
NET DIPSW3 LOC=P9;
NET DIPSW4 LOC=P6;
NET DIPSW5 LOC=P77;
NET DIPSW6 LOC=P70;
NET DIPSW7 LOC=P66;
NET DIPSW8 LOC=P69;
#
# PUSHBUTTON SWITCH CONNECTIONS (ACTIVE-LOW)
NET PUSH_SPARE_
LOC=P67;
NET PUSH_RESET_ LOC=P37;
Listing 4: Connections between the XStend DIP and pushbutton switches and the XS95.
# DIP SWITCH CONNECTIONS
NET DIPSW1
LOC=P6;
NET DIPSW2 LOC=P7;
NET DIPSW3 LOC=P11;
NET DIPSW4 LOC=P5;
NET DIPSW5 LOC=P72;
NET DIPSW6 LOC=P71;
NET DIPSW7 LOC=P66;
NET DIPSW8 LOC=P70;
#
# PUSHBUTTON SWITCH CONNECTIONS (ACTIVE-LOW)
NET PUSH_SPARE_
LOC=P67;
NET PUSH_RESET_ LOC=P10;
2.4 VGA Interface
The XStend Board provides the XS Board with an interface to a VGA monitor through
connector J5. The XS Board can drive the active-low horizontal and vertical sync signals and
control the width and height of the video frame. The XS Board also has access to two bits each
of red, green, and blue color signals so it can generate pixels in any of 2
2
×2
2
×2
2
=64 different
colors.
Here are the connections from the XS40 and XS95 Boards to the VGA interface of the XStend
Board (expressed as UCF constraints):
Listing 5: Connections between the XStend VGA interface and the XS40.
# VGA CONNECTIONS
NET VSYNC_
LOC=P67;
NET HSYNC_ LOC=P19;
NET RED1 LOC=P18;
NET RED0 LOC=P23;
NET GREEN1 LOC=P20;
NET GREEN0 LOC=P24;
NET BLUE1 LOC=P26;
NET BLUE0 LOC=P25;