Vga Interface - XESS XStend Manual

Listing 3: Connections between the XStend DIP and pushbutton switches and the XS40.
# DIP SWITCH CONNECTIONS
NET DIPSW1
NET DIPSW2
NET DIPSW3
NET DIPSW4
NET DIPSW5
NET DIPSW6
NET DIPSW7
NET DIPSW8
#
# PUSHBUTTON SWITCH CONNECTIONS (ACTIVE-LOW)
NET PUSH_SPARE_
NET PUSH_RESET_
Listing 4: Connections between the XStend DIP and pushbutton switches and the XS95.
# DIP SWITCH CONNECTIONS
NET DIPSW1
NET DIPSW2
NET DIPSW3
NET DIPSW4
NET DIPSW5
NET DIPSW6
NET DIPSW7
NET DIPSW8
#
# PUSHBUTTON SWITCH CONNECTIONS (ACTIVE-LOW)
NET PUSH_SPARE_
NET PUSH_RESET_

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
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_
NET HSYNC_
NET RED1
NET RED0
NET GREEN1
NET GREEN0
NET BLUE1
NET BLUE0
LOC=P7;
LOC=P8;
LOC=P9;
LOC=P6;
LOC=P77;
LOC=P70;
LOC=P66;
LOC=P69;
LOC=P67;
LOC=P37;
LOC=P6;
LOC=P7;
LOC=P11;
LOC=P5;
LOC=P72;
LOC=P71;
LOC=P66;
LOC=P70;
LOC=P67;
LOC=P10;
LOC=P67;
LOC=P19;
LOC=P18;
LOC=P23;
LOC=P20;
LOC=P24;
LOC=P26;
LOC=P25;
2 2 2
×2 ×2 =64 different