Renesas SH7641 Informações Técnicas Página 244

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14. Load of Motorola S-type Files
This HDI does not support Motorola S-type files with only the CR code (H'0D) at the end of
each record. Load Motorola S-type files with the CR and LF codes (H'0D0A) at the end of
each record.
15. [Memory] Window
If the following memory contents are displayed, they will be incorrect.
Word access from address 2n + 1
Longword access from address 4n + 1, 4n + 2, or 4n + 3
16. Scrolling Window During User Program Execution
Do not scroll the [Memory] and [Disassembly] windows by dragging the scroll box during
user program execution. This generates many memory reads causing the user program to stop
execution until the memory reads have been completed.
17. [I/O Registers] window
Display and modification
Do not change values of the User Break Controller because it is used by the emulator.
For watchdog timer register, there are two registers to be separately used for write and read
operations.
Table 6.17 Watchdog Timer Register
Register Name Usage Register
WTCSR(W) Write Watchdog timer control/status register
WTCNT(W) Write Watchdog timer counter
WTCSR(R) Read Watchdog timer control/status register
WTCNT(R) Read Watchdog timer counter
The watchdog timer operates only when the user program is executed. Do not change the
value of the frequency change register in the [I/O Registers] window or [Memory] window.
The internal I/O registers can be accessed from the [I/O registers] window. However, note the
following when accessing the SDMR register of the bus-state controller. Before accessing the
SDMR register, specify addresses to be accessed in the I/O-register definition file
(SH7641.IO) and then activate the HDI. After the I/O register file has been created, the
MCUs specification may be changed. If addresses of each I/O register in the I/O register file
and those described in the MCUs manual are different, modify them according to the
description in the MCUs manual. The I/O register can be customized in the format of the I/O
register file. Note that, however, the E10A emulator does not support the bit-field function
described in the Hitachi Debugging Interface User's Manual.
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