ThreadX for V8xx

Highlights

• Complete NEC V8xx support
• Green Hills MULTI (with ThreadX-aware debugging) Development Tools
• Reasonable pricing
• No Royalties
• Complete ANSI C source code
• Easy to use and powerful services
• Responsive Technical Support
• Unlimited Threads, Queues, Event Flags, Timers, Semaphores, Mutexes, Block Pools, and Byte Pools
• Flexible memory usage
• Timeout available on all thread suspension
• Advanced preemption-threshold technique
• Low-overhead Application Timers
• Size scales automatically
• Picokernel architecture for size and speed
• Small footprint (as low as 4 Kbytes)
• Fast Execution (2.9us context switch@33MHz)

Improve Your NEC V8xx Development

Let our extensive experience with the V8xx family of microprocessors help your product development. ThreadX, our high-performance real-time kernel, helps improve your product's quality and its time-to-market. In addition, using ThreadX makes it easier to enhance your product in the future.

NEC V8xx Optimizations

ThreadX optimizes context switching on the V8xx. When context switching occurs inside of a ThreadX service call, only the registers preserved across function calls are saved as part of the thread's context, i.e. registers r5, r20-r31.

A similar technique is used in interrupt handling. On the front end of interrupt service routines, only the compiler's scratch registers are saved initially (registers r1, r2, r6-r19). The full register set is saved only if thread preemption is required.

Advanced Development Tool Integration

ThreadX is fully integrated with the Green Hills MULTI development tools, including advanced ThreadX-aware debugging (please see detailed description below).