Renesas SH7781 Technical Information PDF herunterladen (Seite 22)

Section 2 Software Specifications when Using the SH7781

Rev. 2.00 Jan. 28, 2008 Page 14 of 32

REJ10J1422-0200

2.2 Specific Functions for the Emulator when Using the SH7781

In the SH7781, a reset must be input when the emulator is activated.

2.2.1 Notes on Using the Trace Functions

The emulator supports the trace functions listed in table 2.4.

Table 2.4 Trace Functions

Function

Internal Trace

AUD Trace

Memory Output

Trace

Branch trace Supported (eight branches) Supported Supported

Range memory access trace Supported (eight events) Supported Supported

Software trace Supported (eight events) Supported Supported

Internal Trace Function: This function is activated by selecting the [Internal trace] radio button

in the [Trace type] group box of the [Trace mode] page. Set the trace condition to be used.

Notes: 1. If an interrupt is generated at the program execution start or end, including a step

operation, the emulator address may be acquired. In such a case, the following

message will be displayed. Ignore this address because it is not a user program

address.

*** EML ***

2. If a completion-type exception occurs during exception branch acquisition, the next

address to the address in which an exception occurs is acquired.

3. Trace information cannot be acquired for the following branch instructions:

• The BF and BT instructions whose displacement value is 0

• Branch to H'A0000000 by reset

AUD Trace Function: This function is operational when the AUD pin of the device is connected

to the emulator. It is activated by selecting the [AUD trace] radio button in the [Trace type] group

box of the [Trace mode] page.

Notes: 1. When the trace display is performed during user program execution, the mnemonics,

operands, or source is not displayed.

2. The AUD branch trace function outputs the differences between newly output branch

source addresses and previously output branch source addresses. The window trace

function outputs the differences between newly output addresses and previously output

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 43 44

Keine Kommentare

Renesas SH7781 Technical Information Seite 22