There is a wide assortment of cheap development (dev) boards for Complex Programmable Logic Devices (CPLD), the ... looks like the diagram below. Altera LE MAX V Logic Block A very important ...

[Carl] is making programmable logic design easy with an 8 part CPLD tutorial ... Cheap Field Programmable Gate Arrays (FPGA) are plentiful, but can have intricate power requirements.

The paper describes how, with a SOPC (System on a Programmable Chip) architecture embedded with a 32-Bit NIOS-II, a Layer 2 Ethernet switch can be implemented in a FPGA (Field Programmable Gate Array ...