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This is the Micro OS (uOS) for testing operating system features of
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This is the Micro OS (uOS) for testing operating system features of
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OpenRISC 1000 architecture. Specifically non reentrant, preemptive
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OpenRISC 1000 architecture. Specifically non reentrant, preemptive
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multitasking microkernel. Purpose of this code is not to be a true
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multitasking microkernel. Purpose of this code is not to be a true
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operating system but merely a testbench for testing the architecture,
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operating system but merely a testbench for testing the architecture,
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or1ksim and software development tools (GCC, Binutils, ...).
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or1ksim and software development tools (GCC, Binutils, ...).
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This test OS has all necessary exception handlers to handle exceptions. There
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This test OS has all necessary exception handlers to handle exceptions. There
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are two tasks: one task generates data and passes that data via IPC to the
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are two tasks: one task generates data and passes that data via IPC to the
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second task. Second task outputs the data via or1ksim syscall to the simulator.
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second task. Second task outputs the data via or1ksim syscall to the simulator.
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Currently only OR32 is supported (exception handlers are written in
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Currently only OR32 is supported (exception handlers are written in
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assembly). Tools required to compile sources are the latest
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assembly). Tools required to compile sources are the latest
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or32-coff-gcc, or32-coff-as and or32-coff-ld. Also make sure you undefine
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or32-coff-gcc, or32-coff-as and or32-coff-ld. Also make sure you undefine
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VIRTUAL_MACHINE_ONLY when compiling or1ksim.
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VIRTUAL_MACHINE_ONLY when compiling or1ksim.
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--
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--
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10/Jun/2000, Damjan Lampret, lampret@opencores.org
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10/Jun/2000, Damjan Lampret, lampret@opencores.org
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