Renesas PC7501 Instrukcja Użytkownika Pobierz pdf (Strona 17)

1 Features

1.2.3 About Protect Breaks Function

Protect Break is a function to detect a write of data to the ROM area and an access (read, write,

command execution) to an unused area and stop the target program.

1.2.3.1 Protect Attribute

You can specify the following attributes in 256-bytes units(256-bytes boundary).

• Access Disable

• Read Only

• Write Only

• R/W Enable

1.2.3.2 Access Protect Area

The entire memory space (16 Mbytes) is made a protected area.

The entire protect area is set to "R/W Enable" by default at start of the emulator.

1.2.3.3 Set Method of Protect Break

The two types of designation methods are provided:

• To fetch the memory attribute from the target program section information

• To specify the memory attribute of any area

However, attributes can only be set in 256-byte units.

The specified range is adjusted to be aligned to the 256-byte boundary.

(Example: If the specified range is 0x456 through 0x567, it is adjusted to 0x400 through 0x5FF.)

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Renesas PC7501 Instrukcja Użytkownika Strona 17