Renesas Emulation Pod M306H2T-RPD-E Información técnica descargar pdf (Pagina 19)

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IMPORTANT

Note on Reading Internal Resources of the MCU:

• When the registers listed in Table 1.1 are read with an emulator, those results will be the following

(the data in the MCU are not effected).

(1) Results of real-time trace

The data values of the cycles read are not displayed correctly.

(2) Real-time RAM monitor

The data values read are not displayed correctly.

Table 1.1 Resisters and symbols not displayed normally

Resister Symbol

DMA source pointers 0, 1 SAR0, SAR1

DMA destination pointers 0, 1 DAR0, DAR1

DMA transfer counters 0, 1 TCR0, TCR1

DMA control resisters 0, 1 DM0CON, DM1CON

Note on Protect Register (PRC2):

•Make note of the fact that the protect is not canceled when protect register (PRC2), which enables

writing in the port P9 direction register and the SI/Oi control register, is changed with the below

procedure.

(1) Step execution of the "instruction for setting ("1") PRC2"

(2) Execution from the instruction setting "1" to PRC2 where a software breakpoint is set

(3) Setting the break point from the "instruction for setting ("1") PRC2" to when the "setting the

port P9 direction register and the SI/Oi control register"

(4) Setting ("1") PRC2 from the dump window or script window

Note on Accessing Address 00000h:

•When a maskable interrupt is generated, the interrupt data (interrupt number and interrupt request

level) stored in address 00000h is read out. Also, the interrupt request bit is cleared when address

00000h is read out. Consequently, when the address 00000h readout instruction is executed or

when address 00000h is read out in the cause of a program runaway, a malfunction occurs in that

the interrupt is not executed despite the interrupt request, because the request bit of the highest

priority interrupt factor enabled is cleared.

For this malfunction, when the reading out to the address 00000h is generated excluding the

interrupt, the yellow LED lights up to alarm. When this LED lights, there is a possibility of wrong

access to address 00000h, therefore check the program. This LED is turned off by the system reset

switch of the emulator main unit.

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Renesas Emulation Pod M306H2T-RPD-E Información técnica Pagina 19