ZNEO
®
Series of Microcontrollers Development Kit
QS005703-0908
Page 13 of 18
Notes About ZNEO Development Board Memory
Configuration
The ZNEO development board provides 1Mx16 External Flash and 256Kx16 External
RAM to supplement the Flash Memory and RAM internal to the ZNEO CPU. The Quick
Start sample supplied with the development kit defaults to loading into internal Flash
Memory. However, you can easily download the Quick Start sample code into internal
RAM, external RAM, or external Flash by selecting the appropriate
Build Configuration
from the drop-down menu at the top of the ZDS II user interface as described below.
Relocation of the sample program is controlled from the
Project
→
Settings
dialog box,
in the
Linker
tab, through the
Address Spaces
category (The startup module supplied
with the sample program takes care of the appropriate Address Space settings).
Complete information on internal and external memory configuration is described in
Configuring Memory for Your Program section in the
Zilog Developer Studio II–ZNEO
®
Series User Manual
(UM0171
).
Even though your code may be written for use in external RAM or external
Flash Memory, ensure that the ZNEO chip gets its startup vector table and
other critical information from internal Flash Memory. Your code must
therefore accommodate this requirement. For more information, refer to
Configuring Memory for Your Program section in the Zilog Developer
Studio II–ZNEO
®
Series User Manual (UM0171).
Loading and Debugging Sample Code in Internal RAM
To load and debug the code in internal RAM, select
Internal_RAM_Debug
in the
Build
Configuration
drop-down menu and click the
Rebuild
button. Once the project is rebuilt,
use the
Download Code
option to load the code into internal RAM.
Loading and Debugging Sample Code into External RAM
To load and debug the code in external RAM, select
External_RAM_Debug
in the
Build
Configuration
drop-down menu and click the
Rebuild
button. Once the project is rebuilt,
use the
Download Code
option to load the code into external RAM.
Note:
