Zilog Z8F0130 Bedienungsanleitung PDF herunterladen (Seite 94)

Using the Integrated Development Environment UM013037-1212

Zilog Developer Studio II – Z8 Encore!

User Manual

CPU

The

CPU drop-down list box defines which CPU you want to define for the target. For a

list of CPUs, see the Z8 Encore! Product Support

section on page 3.

To change the CPU for your project, select the appropriate CPU in the

CPU drop-down list

box.

Selecting a CPU does not automatically select include files for your C or assembly source

code. Include files must be manually included in your code. Selecting a new CPU automat-

ically updates the compiler preprocessor defines, assembler defines, and, where necessary,

the linker address space ranges and selected debugger target based on the selected CPU.

Show Warnings

The

Show Warnings checkbox controls the display of warning messages during all

phases of the build. If the checkbox is enabled, warning messages from the assembler,

compiler, librarian, and linker are displayed during the build. If the checkbox is disabled,

all of these warnings are suppressed.

Generate Debug Information

The

Generate Debug Information checkbox makes the build generate debug information

that can be used by the debugger to allow symbolic debugging. Enable this option if you

are planning to debug your code using the debugger. The checkbox enables debug infor-

mation in the assembler, compiler, and linker.

Enabling this option usually increases your overall code size by a moderate amount for

two reasons. First, if your code makes any calls to the C run-time libraries, the library ver-

sion used is the one that was built using the Limit Optimizations for Easier Debugging set-

ting (see the Limit Optimizations for Easier Debugging

section on page 77). Second, the

generated code sets up the stack frame for every function in your own program. Many

functions (those whose parameters and local variables are not too numerous and do not

have their addresses taken in your code) would not otherwise require a stack frame in the

Z8 Encore! architecture, so the code for these functions is slightly smaller if this checkbox

is disabled.

This checkbox interacts with the Limit Optimizations for Easier Debugging checkbox on

the

Code Generation page (see the Limit Optimizations for Easier Debugging section on

page 77). When the

Limit Optimizations for Easier Debugging checkbox is selected,

debug information is always generated so that debugging can be performed. The

Generate

Debug Information

checkbox is grayed out (disabled) when the Limit Optimizations for

Easier Debugging

checkbox is selected. If the Limit Optimizations for Easier Debug-

ging

checkbox is later deselected (even in a later ZDS II session), the Generate Debug

Note:

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