diff --git a/compiler/options.pas b/compiler/options.pas
index 503ef4e5b2..93fe9d3e10 100644
--- a/compiler/options.pas
+++ b/compiler/options.pas
@@ -5554,11 +5554,36 @@ begin
       end;
     system_mipsel_PS1:
       begin
+{
+          init_settings.optimizerswitches:=[
+                                          cs_opt_stackframe,
+                                          cs_opt_size,              // makes smaller
+                                          cs_opt_uncertain, 
+                                          cs_opt_peephole, 
+                                          cs_opt_tailrecursion,
+                                          cs_opt_nodecse,           // makes smaller - don't sets vars to 0
+                                          cs_opt_nodedfa, 
+                                          cs_opt_loopstrength,
+                                          cs_opt_reorder_fields, 
+                                          cs_opt_dead_values,       // makes smaller
+                                          cs_opt_remove_empty_proc, // makes smaller
+                                          cs_opt_dead_store_eliminate, 
+                                          cs_opt_forcenostackframe,                                          
+                                          cs_opt_unused_para,       // makes smaller
+                                          cs_opt_consts];
+
+          // dont work: cs_opt_regvar, cs_opt_constant_propagate
+          // dont compile: cs_opt_scheduler
+          // makes larger: cs_opt_autoinline 
+}
+        init_settings.optimizerswitches:=[];
+        init_settings.debugswitches:= [];
+
         { set default cpu type to MIPS1 with SoftFPU }
         if not option.CPUSetExplicitly then
           init_settings.cputype:=cpu_mips1;
         if not option.OptCPUSetExplicitly then
-          init_settings.optimizecputype:=cpu_mips1;
+          init_settings.optimizecputype:=cpu_none;
         if not option.FPUSetExplicitly then
           begin
             include(init_settings.moduleswitches,cs_fp_emulation);