diff --git a/Makefile b/Makefile
index 5c2a807b..19511108 100755
--- a/Makefile
+++ b/Makefile
@@ -272,6 +272,7 @@ $(BUILD_DIR)/lib/src/osEepromWrite.o: OPT_FLAGS := -O1
 $(BUILD_DIR)/lib/src/osEepromRead.o: OPT_FLAGS := -O1
 $(BUILD_DIR)/lib/src/osSetTimer.o: OPT_FLAGS := -O1
 $(BUILD_DIR)/lib/src/osVirtualToPhysical.o: OPT_FLAGS := -O1
+$(BUILD_DIR)/lib/src/unknown_0CF070.o: OPT_FLAGS := -O1
 
 $(BUILD_DIR)/lib/%.o: MIPSISET := -mips2
 $(BUILD_DIR)/lib/src/mips1/%.o: MIPSISET := -mips1
diff --git a/lib/src/unknown_0CF070.c b/lib/src/unknown_0CF070.c
index 72e90555..af937a23 100644
--- a/lib/src/unknown_0CF070.c
+++ b/lib/src/unknown_0CF070.c
@@ -3,5 +3,36 @@
 
 #include "types.h"
 #include "macros.h"
+#include "libultra_internal.h"
+#include "PR/rcp.h"
+#include "controller.h"
+#include "siint.h"
 
-GLOBAL_ASM("lib/asm/non_matchings/unknown_0CF070/__osPackEepReadData.s")
+extern OSPifRam __osEepPifRam;
+s32 __osPackEepReadData(u8 address) {
+    u8 *ptr;
+    __OSContEepromFormat eepromformat;
+    s32 i;
+
+    ptr = (u8 *)&__osEepPifRam.ramarray;
+    //@bug: i <= here, but in libreultra its i <
+    for (i = 0; i <= ARRLEN(__osEepPifRam.ramarray); i++) {
+        __osEepPifRam.ramarray[i] = CONT_CMD_NOP;
+    }
+    __osEepPifRam.pifstatus = CONT_CMD_EXE;
+
+    eepromformat.txsize = CONT_CMD_READ_EEPROM_TX;
+    eepromformat.rxsize = CONT_CMD_READ_EEPROM_RX;
+    eepromformat.cmd = CONT_CMD_READ_EEPROM;
+    eepromformat.address = address;
+    for (i = 0; i < ARRLEN(eepromformat.data); i++) {
+        eepromformat.data[i] = 0;
+    }
+    //skip the first 4 bytes
+    for (i = 0; i < 4; i++) {
+        *ptr++ = 0;
+    }
+    *(__OSContEepromFormat *)ptr = eepromformat;
+    ptr += sizeof(__OSContEepromFormat);
+    ptr[0] = CONT_CMD_END;
+}