RTAX-S/SL devices are radiation-tolerant FPGAs that offer industry- leading advantages for designers of spaceflight systems. The RTAX-S/SL family is a derivative of the Axcelerator family, with up to two million system gates. The RTAX-S/SL FPGA provides the designer with nearly 250K ASIC gates, with error detection and correction (EDAC) protected static RAM. Microsemi offers the RTAX-S/SL device in two package styles: the ceramic column grid array (CCGA) and ceramic quad flat pack (CQFP) Microsemi has developed four low cost prototyping methods for RTAX-S/SL devices packaged in a CQFP or CCGA, using the Axcelerator family fine pitch ball grid array (FBGA) or ceramic land grid array (LGA) as a prototyping vehicle: 1 CQFP to FBGA adapter socket 2 CQFP to LGA adapter socket 3 CCGA to FBGA adapter socket 4 CCGA to LGA adapter socket.