diff --git a/nuttx/configs/ez80f910200zco/ostest/ostest.linkcmd b/nuttx/configs/ez80f910200zco/ostest/ostest.linkcmd
index 2c88d78ac..89b90e75e 100755
--- a/nuttx/configs/ez80f910200zco/ostest/ostest.linkcmd
+++ b/nuttx/configs/ez80f910200zco/ostest/ostest.linkcmd
@@ -38,9 +38,9 @@
 -sort NAME=ascending -warn -NOdebug -NOigcase
 
 RANGE ROM $000000 : $03FFFF
-RANGE RAM $B80000 : $BFFFFF
-RANGE EXTIO $0 : $FFFF
-RANGE INTIO $0 : $FF
+RANGE RAM $B7E000 : $B7FFFF
+RANGE EXTIO $000000 : $00FFFF
+RANGE INTIO $000000 : $0000FF
 
 CHANGE STRSECT is ROM
 
@@ -59,22 +59,22 @@ DEFINE __low_romcode = copy base of CODE
 DEFINE __low_code = base of CODE
 DEFINE __len_code = length of CODE
 DEFINE __copy_code_to_ram = 0
-DEFINE __crtl = 1
+DEFINE __crtl = 0
 DEFINE __CS0_LBR_INIT_PARAM = $10
 DEFINE __CS0_UBR_INIT_PARAM = $1f
 DEFINE __CS0_CTL_INIT_PARAM = $a8
 DEFINE __CS0_BMC_INIT_PARAM = $02
-DEFINE __CS1_LBR_INIT_PARAM = $c0
-DEFINE __CS1_UBR_INIT_PARAM = $c7
+DEFINE __CS1_LBR_INIT_PARAM = $b8
+DEFINE __CS1_UBR_INIT_PARAM = $b9
 DEFINE __CS1_CTL_INIT_PARAM = $28
 DEFINE __CS1_BMC_INIT_PARAM = $02
 DEFINE __CS2_LBR_INIT_PARAM = $80
 DEFINE __CS2_UBR_INIT_PARAM = $bf
 DEFINE __CS2_CTL_INIT_PARAM = $28
 DEFINE __CS2_BMC_INIT_PARAM = $81
-DEFINE __CS3_LBR_INIT_PARAM = $00
-DEFINE __CS3_UBR_INIT_PARAM = $00
-DEFINE __CS3_CTL_INIT_PARAM = $00
+DEFINE __CS3_LBR_INIT_PARAM = $60
+DEFINE __CS3_UBR_INIT_PARAM = $7f
+DEFINE __CS3_CTL_INIT_PARAM = $a8
 DEFINE __CS3_BMC_INIT_PARAM = $02
 DEFINE __RAM_CTL_INIT_PARAM = $C0
 DEFINE __RAM_ADDR_U_INIT_PARAM = $B7
@@ -84,11 +84,9 @@ DEFINE __FLASH_ADDR_U_INIT_PARAM = $00
 define _SYS_CLK_FREQ = 50000000
 
 define _OSC_FREQ = 5000000
-define _SYS_CLK_SRC = 0
-define _OSC_FREQ_MULT = 1
-define __PLL_CTL0_INIT_PARAM = $40
-
-define _zsl_g_clock_xdefine = 50000000
+define _SYS_CLK_SRC = 1
+define _OSC_FREQ_MULT = 10
+define __PLL_CTL0_INIT_PARAM = $41
 
 /* arch/z80/src/Makefile.zdsii will append target, object and library paths below */
 
diff --git a/nuttx/configs/ez80f910200zco/ostest/ostest.zdsproj b/nuttx/configs/ez80f910200zco/ostest/ostest.zdsproj
index 30cb49a54..d558a2e5f 100755
--- a/nuttx/configs/ez80f910200zco/ostest/ostest.zdsproj
+++ b/nuttx/configs/ez80f910200zco/ostest/ostest.zdsproj
@@ -12,7 +12,7 @@
 <tools>
 <tool name="Assembler">
 <options>
-<option name="define" type="string" change-action="assemble">_EZ80ACCLAIM!=1,_SIMULATE=1</option>
+<option name="define" type="string" change-action="assemble">_EZ80ACCLAIM!=1</option>
 <option name="include" type="string" change-action="assemble"></option>
 <option name="list" type="boolean" change-action="none">true</option>
 <option name="listmac" type="boolean" change-action="none">false</option>
@@ -25,7 +25,7 @@
 </tool>
 <tool name="Compiler">
 <options>
-<option name="define" type="string" change-action="compile">_DEBUG,_EZ80F91,_EZ80ACCLAIM!,_SIMULATE</option>
+<option name="define" type="string" change-action="compile">_DEBUG,_EZ80F91,_EZ80ACCLAIM!</option>
 <option name="genprintf" type="boolean" change-action="compile">false</option>
 <option name="keepasm" type="boolean" change-action="none">false</option>
 <option name="keeplst" type="boolean" change-action="none">true</option>
@@ -43,21 +43,21 @@
 <tool name="Debugger">
 <options>
 <option name="target" type="string" change-action="rebuild">eZ80F91ModDevKit_Flash</option>
-<option name="debugtool" type="string" change-action="none">Simulator</option>
+<option name="debugtool" type="string" change-action="none">USBSmartCable</option>
 <option name="usepageerase" type="boolean" change-action="none">true</option>
 </options>
 </tool>
 <tool name="FlashProgrammer">
 <options>
-<option name="erasebeforeburn" type="boolean" change-action="none">false</option>
+<option name="erasebeforeburn" type="boolean" change-action="none">true</option>
 <option name="eraseinfopage" type="boolean" change-action="none">false</option>
 <option name="enableinfopage" type="boolean" change-action="none">false</option>
 <option name="includeserial" type="boolean" change-action="none">false</option>
 <option name="offset" type="integer" change-action="none">0</option>
 <option name="snenable" type="boolean" change-action="none">false</option>
-<option name="sn" type="string" change-action="none">0</option>
-<option name="snsize" type="integer" change-action="none">0</option>
-<option name="snstep" type="integer" change-action="none">0</option>
+<option name="sn" type="string" change-action="none">000000000000000000000000</option>
+<option name="snsize" type="integer" change-action="none">1</option>
+<option name="snstep" type="integer" change-action="none">000000000000000000000000</option>
 <option name="snstepformat" type="integer" change-action="none">0</option>
 <option name="snaddress" type="string" change-action="none">0</option>
 <option name="snformat" type="integer" change-action="none">0</option>
@@ -95,7 +95,7 @@
 <option name="relist" type="boolean" change-action="build">false</option>
 <option name="startuptype" type="string" change-action="build">Included</option>
 <option name="startuplnkcmds" type="boolean" change-action="build">true</option>
-<option name="usecrun" type="boolean" change-action="build">true</option>
+<option name="usecrun" type="boolean" change-action="build">false</option>
 <option name="warnoverlap" type="boolean" change-action="none">true</option>
 <option name="xref" type="boolean" change-action="none">true</option>
 <option name="undefisfatal" type="boolean" change-action="none">true</option>