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RENESAS TOOL NEWS on February 1, 2006: RSO-HI7000/4-060201D
| Notes on Using the Real-Time OS HI7000/4 |
Please take note of the following problems in using the real-time OS HI7000/4, which supports the SuperH RISC engine family of MCUs evolved from the SH-1, SH-2, SH2-DSP, SH-2E (excluding FPU version), SH-2A, and SH2A-FPU cores:
- On using SH-1-cored MCUs
- On using sample programs
- Problem on Using SH-1-Cored MCUs
| 1.1 |
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Versions Concerned
HI7000/4 V.2.01 Release 00--V.2.02 Release 01
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| 1.2 |
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Description
If a service call that handles variable-size memory pools is made by using the new method* of managing them in any SH-1-cored MCU, a general invalid instruction exception may happen in the kernel, which prevents the system from operating normally.
| * |
To use this new method, open the Modification of Variable-Size Memory Pool Information dialog box in the configurator, and check the new method [CFG_NEWMPL] check box. For details of the new method, see the "Variable-Size Memory Pool" section in the user's manual. |
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| 1.3 |
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Workaround
Don't use the new method of managing variable-size memory pools; that is, don't check the CFG_NEWMPL check box.
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| 1.4 |
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Schedule of Fixing the Problem
We have no plan to fix this problem. It is a restriction imposed on all the SH-1-cored MCUs. |
- Problem on Using Sample Programs
| 2.1 |
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Versions Concerned
HI7000/4 V.2.02 Release 00 and later
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| 2.2 |
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Description
A unified sample program "kernel_exp.src" (interrupt and exception processing routines) has been included with the HI7000/4 V.2.02 Release 00 and later instead of the previous two files of "nnnn_expent.src" and "nnnn_intdwn.src".
So use "kernel_exp.src" in the HI7000/4 V.2.02 Release 00 or later. |
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