diff --git a/include/functions.h b/include/functions.h
index 23c537f0b..0fff4f8f4 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -363,7 +363,7 @@ void __osTimerServicesInit(void);
 void __osTimerInterrupt(void);
 void __osSetTimerIntr(OSTime tim);
 OSTime __osInsertTimer(OSTimer* t);
-// void __osVoiceContRead36(void);
+s32 __osVoiceContRead36(OSMesgQueue* mq, s32 port, s32, u8*);
 s32 __osSpDeviceBusy(void);
 s32 __osSiDeviceBusy(void);
 // void guMtxIdent(void);
diff --git a/include/os.h b/include/os.h
index 1a4712bff..d168d352e 100644
--- a/include/os.h
+++ b/include/os.h
@@ -135,9 +135,12 @@ typedef struct {
 
 // #define CONT_ERR_NO_CONTROLLER
 // #define CONT_ERR_DEVICE
+// #define CONT_ERR_NOT_READY
 // #define CONT_ERR_CONTRFAIL
 // #define CONT_ERR_VOICE_NO_RESPONSE
-// #define CONT_ERR_INVALID 
+// #define CONT_ERR_INVALID
+// #define CONT_ERR_VOICE_WORD
+// #define CONT_ERR_VOICE_MEMORY
 
 typedef struct {
     /* 0x0 */ OSMesgQueue* mq;
diff --git a/include/variables.h b/include/variables.h
index 6b5fbe620..55fe64c49 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -329,7 +329,7 @@ extern OSTask tmp_task;
 extern OSMesg siAccessBuf[1];
 extern OSMesgQueue __osSiAccessQueue;
 
-extern UNK_TYPE1 D_8009CF60;
+extern u8 D_8009CF60;
 // extern UNK_TYPE4 D_8009CF70;
 extern OSThread __osThreadSave;
 extern OSPiHandle D_8009D130;
diff --git a/src/libultra/voice/voicegetreaddata.c b/src/libultra/voice/voicegetreaddata.c
index c0987c151..0bba3bac0 100644
--- a/src/libultra/voice/voicegetreaddata.c
+++ b/src/libultra/voice/voicegetreaddata.c
@@ -1,4 +1,121 @@
 #include "global.h"
 
 // Gets voice recognition result from the Voice Recognition System
+#ifdef NON_EQUIVALENT
+s32 osVoiceGetReadData(OSVoiceHandle* hd, OSVoiceData* result) {
+    s32 errorCode;
+    u8 new_var;
+    u8 temp_t9;
+    u8 sp38[40];
+    s32 i;
+
+    switch (hd->mode) {
+        case 1:
+            errorCode = __osVoiceGetStatus(hd->mq, hd->port, &sp38[39]);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            if (sp38[39] & 1) {
+                return 0xC;
+            }
+
+            errorCode = __osVoiceContRead2(hd->mq, hd->port, 0, sp38);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            temp_t9 = sp38[0] & 7;
+            hd->status = temp_t9;
+            D_8009CF60 = temp_t9;
+            if ((temp_t9 != 0) && (temp_t9 != 7)) {
+                return 0xC;
+            }
+        case 2:
+            hd->mode = 2;
+
+            errorCode = __osVoiceGetStatus(hd->mq, hd->port, &sp38[39]);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            if (0) {}
+            if (sp38[39] & 2) {
+                return 0xF;
+            }
+
+            sp38[1] = 0x600;
+            errorCode = __osVoiceContWrite4(hd->mq, hd->port, 0, sp38);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+        case 3:
+            hd->mode = 3;
+
+            errorCode = __osVoiceGetStatus(hd->mq, hd->port, &sp38[39]);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            if (sp38[39] & 1) {
+                return 0xF;
+            }
+
+            errorCode = __osVoiceContRead36(hd->mq, hd->port, 0, sp38);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            result->warning = (sp38[5] << 8) + sp38[4];
+            result->answer_num = sp38[6];
+            result->voice_level = (sp38[9] << 8) + sp38[8];
+            result->voice_sn = (sp38[11] << 8) + sp38[10];
+            result->voice_time = (sp38[13] << 8) + sp38[12];
+
+            new_var = 4;
+            for (i = 0; i < 5; i++) {
+                result->answer[i] = (sp38[15 + new_var*i] << 8) + sp38[14 + new_var*i];
+                result->distance[i] = (sp38[17 + new_var*i] << 8) + sp38[16 + new_var*i];
+            }
+
+            if (result->answer[0] == 0x7FFF) {
+                result->answer_num = 0;
+            }
+
+            hd->status = sp38[34] & 7;
+            if ((D_8009CF60 == 0) || (hd->status == 0)) {
+                break;
+            }
+        case 4:
+            hd->mode = 4;
+
+            errorCode = __osVoiceGetStatus(hd->mq, hd->port, &sp38[39]);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            if (sp38[39] & 1) {
+                return 0xF;
+            }
+
+            errorCode = __osVoiceContRead2(hd->mq, hd->port, 0, sp38);
+            if (errorCode != 0) {
+                return errorCode;
+            }
+
+            hd->status = sp38[0] & 7;
+            if ((sp38[0] & 7) != 0) {
+                return 0xF;
+            }
+
+            break;
+        default:
+            return 5;
+    }
+    hd->mode = 0;
+    return errorCode;
+}
+#else
 #pragma GLOBAL_ASM("asm/non_matchings/boot/voicegetreaddata/osVoiceGetReadData.s")
+#endif