# SDRAM mirrored

**URL:** <https://forums.digi.com/t/sdram-mirrored/4772>\
**Category:** NET+OS\
**Created:** [July 21, 2005, 8:07am UTC](https://forums.digi.com/t/sdram-mirrored/4772 "2005-07-21T08:07:59Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![wukitech](https://avatars.discourse-cdn.com/v4/letter/w/b2d939/32.png) [@wukitech](https://forums.digi.com/u/wukitech)\
**Post date:** [July 21, 2005, 8:07am UTC](https://forums.digi.com/t/sdram-mirrored/4772/1 "2005-07-21T08:07:59Z")

</div>

Hello!I have the problem, that the used SDRAM (samsung K4S563233F with 2M x 32Bit x 4 banks) is mirrored. I have the same data on the start address 0x0 and the same data on the address 0x1000000. I have defined the start command in the file ns9xxx.cmd with 0x84300 and the settings in the file init\_settings.h are: #define CS\_MEM\_TYPE MEM\_TYPE\_x16 #define CS\_MEM\_SIZE MEM\_SIZE\_64Mb #define CS\_WIDTH MEM\_WIDTH\_32 #define CS\_POWERLEVEL MEM\_POWER\_LEVEL\_NORMAL #define FIRSTSECTORRAM 0x00022000 #define SECONDSECTORRAM 0x10022000 #define THIRDSECTORRAM 0x20022000 #define FOURTHSECTORRAM 0x30022000 I use the debug mode. What is the mistake or what have i forgotten to set? Please help me but it’s urgent! Thanks a lot! Robert