Green Hills Software offers three upward-compatible RTOSes that give the developer a scalable solution optimized to the particular Xilinx Virtex processor. Features include:

• fast and deterministic interrupt response time
• a common API for portable applications
• field debugging
• integration with time-saving development tools MULTI and EventAnalyzer
• broad range of communication and I/O connectivity

The µ-velOSity™ microkernel is the smallest of Green Hills Software’s family of royalty-free operating systems. It is implemented as a C library and so can be easily ported to multiple target architectures. Its simple design as well as integration with the best-in-class MULTI tools make µ-velOSity both easy to learn and simple to use.

The velOSity™ kernel is small, fast and royalty-free— making it perfect for high-volume, cost-sensitive, and deeply embedded applications. The velOSitykernel provides a rich set of kernel services, device drivers, BSPs and middleware.

The INTEGRITY RTOS is a secure, royalty-free RTOS intended for use in embedded systems that require maximum reliability. Representing the most advanced RTOS technology available, INTEGRITY achieves unprecendented levels of reliability, availability, and serviceability for applications in telecommunications, defense, networking and medical equipment along with many other industries.

MULTI provides a host-based (Windows, Solaris, or Linux) graphical environment for Xilinx Virtex target development. Host-target connectivity is provided through a variety of means, depending on the target environment. MULTI supports many targets, with a variety of interfaces:

• Bare board access (no RTOS or ROM Monitor)— Combined with the Green Hills Probe, MULTI provides a complete software package that enables programmers to debug code without need for operating systems, kernels or even ROM monitors.
• Commercial RTOS support—MULTI supports Xilinx Virtex boards running INTEGRITY, velOSity or µ-velOSity from Green Hills Software. MULTI provides multitaskaware debugging. Special commands allow tasks to be stopped upon system events such as task creation.
• Custom RTOS support—MULTI can be interfaced with a custom RTOS through integration of the Green Hills INDRT API. INDRT provides all the debug information needed by MULTI, and is easily integrated into user code.
• Instruction set simulator—The MULTI instruction set simulator interpretively executes Power Architecture (formerly PowerPC) programs on the host PC or workstation without the need for target hardware by simulating the execution of the target processor at the instruction level. The simulator provides full debug features, host I/O, command window, extended profiling and hardware breakpoints.