== Custom User I/O Control Core ==

A custom core for user I/O control is available in the [source:/PlatformSupport/CustomPeripherals/pcores/warp_v4_userio_v1_00_a repository] and during the [//svn/WARP/Documentation/Tutorials/XPS_Intro/html/XPS_Intro.html base system builder] process. The core allows the user to control the LEDs, read the push buttons and DIP switches and output patterns to the 7-segment displays. The core also implements the mapping of 4-bit hexadecimal characters to 7-bit patterns used to drive the 7-segment displays. This mapping is enabled per display at runtime by user designs.

=== Register Bank ===

The core has 5 registers that enable the I/O functionality. Register 0 and 1 are the output and input registers for the dedicated I/O, namely the LEDs, the push buttons and the DIP switch.

[[Image(HardwareUsersGuides/FPGABoard_v2.2/Files:reg0reg1.jpg)]]