Actel announced prototype availability of the RTAX4000S, a four million-gate FPGA. The RTAX4000S is suited for satellite payload systems that require high gate counts, such as data processing applications in communications, earth observation and scientific satellites. Like the flight units of the radiation-tolerant RTAX4000S, the RTAX4000S prototype boasts four million system gates (double the gate count of the previous largest RTAX-S part), 840 I/Os and 540 Kbits of embedded memory. The RTAX4000S PROTO LG 1272 (Land Grid Array) is available now. The RTAX4000S PROTO CG 1272 (Ceramic Column Grid Array) will be available by the end of August 2006 and the RTAX4000S PROTO CQ 352 (Ceramic Quad Flat Pack) will be available at the end of September. Orders for the prototype units are now open. Software support for the RTAX4000S is also available now. Space flight units of the RTAX4000S, in production quantities, are expected to be available to customers during Q1 2007.