Ever get stuck choosing the right logic chip combination or voltage level translator? Give up the hunt and create your own custom logic chip. CPLDs can give you the logic you need, with the pinout you want, while saving board space and board revisions.
The Xilinx XC9500XL family has some of the cheapest and readily-available CPLDs. This development board from Dangerous Prototypes will help you build your first custom logic chip using simple schematic entry, Verilog, or VHDL.
XC9572XL CPLD with 72 macrocells
5volt tolerant inputs
On-board 3.3volt power supply for core and pins
Selectable 3.3volt or external supply for pins (1.8volt to 3.3volt)