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CHAPTER 2 DEPENDENCE FUNCTIONS
2.1.3 Memory Simulation
This section describes the memory simulation executed by SOFTUNE Workbench.
■ Memory Simulation
The simulator debugger must first secure memory space to simulate instructions because it simulates the
memory space secured in the host PC memory.
The following operation is required.
- To secure the memory area, either use the [Setup] - [Memory Map] menu, or the SET MAP command
in the Command window.
- Load the file output by the Linkage Editor (Load Module File) using either the [Debug] - [Load target
file] menu, or the LOAD/OBJECT command in the Command window.
■ Simulation Memory Space
Memory space access attributes can be specified byte-by-byte using the [Setup] - [Memory Map] menu. The
access attribute of unspecified memory space is Undefined using the [Setup] - [Memory Map] menu.
■ Memory Area Access Attributes
Access attributes for memory area can be specified as shown in Table 2.1-1. A guarded access break occurs if
access is attempted against such access attribute while executing a program. When access is made by a
program command, such access is allowed regardless of the attribute, CODE, READ or WRITE. However,
access to memory in an undefined area causes an error.
Table 2.1-1 Types of Access Attributes
Attribute Semantics
CODE Instruction operation enabled
READ Data read enabled
WRITE Data write enabled
undefined Attribute undefined (access prohibited)