 |
|
|
RENESAS TOOL NEWS on August 1, 2005: RSO-HI7700/4-050801D
The Real-Time OS HI7700/4
Revised to V.2.01 Release 00
(with Additional Charge) |
We have revised the real-time OS HI7700/4 from V.1.03 Release 02 to
V.2.01 Release 00. (This is used for the SuperH RISC engine family,
supporting the MCUs using any of the SH-3, SH3-DSP and SH4AL-DSP cores.)
- Descriptions of Revision
| 1.1 |
|
Functions Introduced and Improved
| (1) |
|
The SH4AL-DSP with extended functions supported
The cache-support library--shx2_cache_???.lib--for the SH4AL-DSP
with extended functions is available. |
| (2) |
|
Functions of assigning addresses to task stacks, fixed-length
memory pools, and variable-length memory pools supported
In the previous versions, the user cannot assign addresses to a
stack at creating a task and to a fixed-length or variable-length
memory pool when it is created but only the kernel can assign
addresses within the pre-defined area to them.
In the revised version, the user can assign those within the user-
reserved area to them as well as the kernel.
By this improvement, the user is allowed to assign addresses to
task stacks and memory pools the way the user likes according to
the user's purposes; that is, the user is able to use high-speed
internal memory for stacks at creating specified tasks. |
| (3) |
|
The management of fixed-length memory pools modified
In the previous versions, the kernel's management table for
managing each memory block in a fixed-length memory pool resides
in the area of the fixed-length memory.
In the revised version, the user is allowed to reserve an area
for the kernel's management table so that the user can assign
addresses to fixed-length memory pools when they are generated.
As a result, no management table does exist in each memory pool.
By combining this feature with that of (2) above, memory blocks
with specified offsets can be gained. |
| (4) |
|
Improvements of variable-length memory pools made
Gaining and relinquishing memory blocks are performed very.
rapidly. Also attribute value VTA_UNFRAGMENT has been introduced
to reduce fragmentation of vacant areas. |
| (5) |
|
The initial values of the DSR registers in the DSP changed
The initial values of the DSR registers, which are used for the
tasks with attribute value TA_COP0 and for the task exception-
handling routine, have been changed from indefinite to 0s. (This
change has been applied to V.1.03 Release 02 and later.)
And, in the previous versions, the kernel does not initialize
the DSR registers when a task having not attribute value TA_COP0
is switched to the one having it. In the revised version, these
registers are initialized to 0s. |
| (6) |
|
The initial values of the SR register for the task exception-
handling routine changed
The initial value of the SR register used for the task exception-
handling routine has been changed from the same value as in the task
before initiation to 0. |
| (7) |
|
The maximum exception code CFG_MAXVCTNO extended
The configurator can select a value of the maximum exception
code CFG_MAXVCTNO out of an extended range of 0xfe0 to 0x3fe0. |
| (8) |
|
Handling of TRAPA #16-31 improved
A trap exception handler can be defined to handle these traps. |
| (9) |
|
Restrictions on aligning the structure elements raised
The restrictions imposed on the pack option and the #pragma pack
directive at compilation have been raised. |
| (10) |
|
How to give names to IDs improved
In the previous versions, the configurator can give names to IDs
only when it automatically assigns ID names to objects. In the
revised version, it is allowed to give names to IDs even if
automatic assignment is not used. |
|
| 1.2 |
|
Problems Fixed
The problems on setting the timer interrupt priority level and on
reading files not supported have been fixed.
For details, see RENESAS TOOL NEWS No. RSO-RTOS-050716D, "Notes on Using the Real-Time OSes HI7750/4, HI7700/4, HI7000/4 and HI1000/4" issued on
July 16, 2005. |
- How to Purchase the Product
Because important improvements have been made to the product, free-of-
charge online update is not available. If necessary, please purchase
it. When you place an order for the product, supply the following
items of information to your local Renesas Technology sales office
or distributor:
| Product Type | HI7700/4 |
| Type Name | R0R40770TXW02w |
| Version No. | V.2.01 |
| Release No. | Release 00 |
| Host OS | Windows XP, Windows Me, Windows 98, Windows 2000, or Windows NT 4.0 |
|---|
NOTICE:
Lower case letter w in the type name denotes the type of license.
It shall be replaced with any of the following numerals or letters:
| 1: |
|
License for evaluation; a real-time OS can be installed only to one host computer. |
| 5: |
|
License for evaluation; a real-time OS can be installed up to 5 host computers. |
| A: |
|
License for evaluation; a real-time OS can be installed up to 10 host computers. |
| K: |
|
Mass-production license; a real-time OS can be embedded up to a total of 1,000 productions of product model(s) with the source code not disclosed. |
| U: |
|
Mass-production license; a real-time OS can be embedded up to unlimited productions of product model(s) with the source code not disclosed. |
| Z: |
|
Mass-production license; a real-time OS can be embedded up to unlimited productions of product model(s) with the source code disclosed. |
Example:
For mass-production license up to a total of 1,000 productions
with the source code not disclosed, the type name is
R0R40770TXW02K.
|
|
