Advanced RTOS, embedded real-time OS, compact OS, IDE, Software development toolkits, embedded c compilers, Multicore debugger, hardware probes, static source code analysis tool, secure hypervisor, virtual prototyping platform
ThreadX for v8xx Thread RTOS
ThreadX
 
Express Logic's ThreadX® Real-Time Operating System (RTOS) is available from and supported by Green Hills Software. ThreadX is fully integrated with the Green Hills Software MULTI® Integrated Development Environment, providing Optimizing Compilers, Source Debugger, Graphical Project Builder and many other powerful tools for development of embedded applications.

Fast Execution
(33MHz, 0 wait-states, v850)
context switch 2.93us
tx_thread_suspend 3.87us
tx_thread_resume 3.48us
tx_thread_relinquish 1.21us
tx_semaphore_get 1.06us
tx_semaphore_put 1.06us
tx_queue_send 2.1us
tx_queue_receive 2.24us
tx_event_flags_set 1.96us
tx_event_flags_get 1.93us
tx_block_allocate 1.48us
tx_block_release 1.48us
tx_byte_allocate 4.09us
tx_byte_release 2.12us



Supported IDE
MULTI For ThreadX

Highlights
Complete v8xx family support
Reasonable pricing
Royalty-Free
Complete ANSI C source code
Easy to use and powerful services
Responsive Technical Support
Unlimited Threads, Queues, Event Flags, Timers, Semaphores, Block Pools, and Byte Pools
Flexible memory usage
Timeout available on all thread suspension
Advanced preemption-threshold technology
Low-overhead Application Timers
Size scales automatically
picokernel architecture for size and speed
 
Small footprint (sizes in bytes):
    Instruction area size 4-25K
    Global data area 696
    Thread control block 144
    Timer control block 44
    Semaphore control block 28
    Queue control block 56
    Event Flag control block 32
    Block Memory control block 48
    Byte Memory control block 52

 
v8xx Optimizations

ThreadX optimizes context switching on the NEC V8xx. When a context switch occurs inside of a ThreadX service call, only the registers preserved across function calls are saved in the thread's context, i.e. registers r5, r20 through 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. 

Improve Your v8xx Development
Let our extensive experience with the v8xx family of microprocessors help your product development. ThreadX 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.
 
Easy to Use
ThreadX is designed for ease of use. The API is designed to be easy to understand, powerful, and consistent. The same is true with our reference manual and other supporting documentation.


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