Symsyn is a simple programming language and realtime multitasking operating environment. A Symsyn program consists of one or more instructions. Each instruction maps directly to a Pascal procedure which resides in the runtime emulator. It can accomodate a virtually unlimited number of new instructions. There are three data types: 64 bit word, 8 bit character, and Ansi strings.
Re-assignable version specific opcodes. Extensible architecture designed to accommodate new instructions. Written in Pascal - any Pascal procedure can be reduced to an instruction. Interprogram communication (synchronization and data passing) instructions. Bit, character, and word manipulation. TCP/IP support.
More info at : http://symsyn.qsys.us