Zilog ZUSBOPTS - Manual (Page 343)

UM017105-0511 Program Configurations
Zilog Developer Studio II – ZNEO™
User Manual
315
command in the Additional Linker Directives dialog box (see Additional Directives – see
page 62):
change code=ERAM /* The linker will then allocate code segment in
ERAM */
To go back to the Default Program Configuration for production code, remove this direc-
tive from the
Additional Linker Directives dialog box.
Special Case: Partial Download to ERAM
A special case of this configuration is to download program code from just one assembly
segment into ERAM, while retaining the rest of the code in EROM.
Perform the following steps:
1. Use a distinct segment name for the particular segment.
For example:
Define main_TEXT, space=EROM
segment main_TEXT
; code goes here
2. Use the linker CHANGE directive to move the particular segment to ERAM. For
example:
To download the code for the main_TEXT segment to ERAM, add the following
linker command in the Additional Linker Directives dialog box (see Additional
Directives – see page 62):
change main_TEXT = ERAM
To go back to the Default Program Configuration for production code, remove this
directive from the
Additional Linker Directives dialog box.
Download to RAM Program Configuration
The Download to RAM Program Configuration, shown in Figure 134, can be used only
during development and not for production code. It is similar to the Default Program Con-
figuration, the only difference is that the rest of the executable program code is down-
loaded in RAM and executed from RAM.