diff --git a/rpcs3/Emu/Cell/Modules/cellKey2char.cpp b/rpcs3/Emu/Cell/Modules/cellKey2char.cpp
index fe3d9ebbf1..3505dad943 100644
--- a/rpcs3/Emu/Cell/Modules/cellKey2char.cpp
+++ b/rpcs3/Emu/Cell/Modules/cellKey2char.cpp
@@ -1,7 +1,6 @@
-#include "stdafx.h"
+#include "stdafx.h"
 #include "Emu/Cell/PPUModule.h"
-
-
+#include "cellKb.h"
 
 LOG_CHANNEL(cellKey2char);
 
@@ -16,6 +15,20 @@ enum CellKey2CharError : u32
 	CELL_K2C_ERROR_OTHER               = 0x80121306,
 };
 
+// Modes
+enum
+{
+	CELL_KEY2CHAR_MODE_ENGLISH = 0,
+	CELL_KEY2CHAR_MODE_NATIVE  = 1,
+	CELL_KEY2CHAR_MODE_NATIVE2 = 2
+};
+
+// Constants
+enum
+{
+	SCE_KEY2CHAR_HANDLE_SIZE = 128
+};
+
 struct CellKey2CharKeyData
 {
 	be_t<u32> led;
@@ -23,6 +36,11 @@ struct CellKey2CharKeyData
 	be_t<u16> keycode;
 };
 
+struct CellKey2CharHandle
+{
+	u8 data[SCE_KEY2CHAR_HANDLE_SIZE];
+};
+
 template<>
 void fmt_class_string<CellKey2CharError>::format(std::string& out, u64 arg)
 {
@@ -42,33 +60,126 @@ void fmt_class_string<CellKey2CharError>::format(std::string& out, u64 arg)
 	});
 }
 
-error_code cellKey2CharOpen(vm::ptr<u8> handle)
+error_code cellKey2CharOpen(vm::ptr<CellKey2CharHandle> handle)
 {
 	cellKey2char.todo("cellKey2CharOpen(handle=*0x%x)", handle);
+
+	if (!handle)
+		return CELL_K2C_ERROR_INVALID_HANDLE;
+
+	if (handle->data[8] != 0)
+		return CELL_K2C_ERROR_ALREADY_INITIALIZED;
+
+	// TODO
+
 	return CELL_OK;
 }
 
-error_code cellKey2CharClose(vm::ptr<u8> handle)
+error_code cellKey2CharClose(vm::ptr<CellKey2CharHandle> handle)
 {
 	cellKey2char.todo("cellKey2CharClose(handle=*0x%x)", handle);
+
+	if (!handle)
+		return CELL_K2C_ERROR_INVALID_HANDLE;
+
+	if (handle->data[8] == 0)
+		return CELL_K2C_ERROR_UNINITIALIZED;
+
+	// TODO
+
 	return CELL_OK;
 }
 
-error_code cellKey2CharGetChar(vm::ptr<u8> handle, vm::ptr<CellKey2CharKeyData> kdata, vm::pptr<u16> charCode, vm::ptr<u32> charNum, vm::ptr<b8> processed)
+error_code cellKey2CharGetChar(vm::ptr<CellKey2CharHandle> handle, vm::ptr<CellKey2CharKeyData> kdata, vm::pptr<u16> charCode, vm::ptr<u32> charNum, vm::ptr<b8> processed)
 {
 	cellKey2char.todo("cellKey2CharGetChar(handle=*0x%x, kdata=*0x%x, charCode=**0x%x, charNum=*0x%x, processed=*0x%x)", handle, kdata, charCode, charNum, processed);
+
+	if (!handle)
+		return CELL_K2C_ERROR_INVALID_HANDLE;
+
+	if (handle->data[8] == 0)
+		return CELL_K2C_ERROR_UNINITIALIZED;
+
+	if (!charCode || !kdata || !kdata->keycode)
+		return CELL_K2C_ERROR_INVALID_PARAMETER;
+
+	if (handle->data[0] == 255)
+	{
+		if (false /* some check for CELL_OK */)
+			return CELL_K2C_ERROR_OTHER;
+	}
+
 	return CELL_OK;
 }
 
-error_code cellKey2CharSetMode(vm::ptr<u8> handle, s32 mode)
+error_code cellKey2CharSetMode(vm::ptr<CellKey2CharHandle> handle, s32 mode)
 {
 	cellKey2char.todo("cellKey2CharSetMode(handle=*0x%x, mode=0x%x)", handle, mode);
+
+	if (!handle)
+		return CELL_K2C_ERROR_INVALID_HANDLE;
+
+	if (handle->data[8] == 0)
+		return CELL_K2C_ERROR_UNINITIALIZED;
+
+	if (mode > CELL_KEY2CHAR_MODE_NATIVE2)
+		return CELL_K2C_ERROR_INVALID_PARAMETER;
+
+	if (handle->data[0] == 255)
+		return CELL_K2C_ERROR_OTHER;
+
+	const s32 mapping = handle->data[1];
+
+	switch (mode)
+	{
+	case CELL_KEY2CHAR_MODE_ENGLISH:
+		// TODO: set mode to alphanumeric
+		break;
+	case CELL_KEY2CHAR_MODE_NATIVE:
+		switch (mapping)
+		{
+		case CELL_KB_MAPPING_106: // Japanese
+			// TODO: set mode to kana
+			break;
+		case CELL_KB_MAPPING_RUSSIAN_RUSSIA:
+			// TODO: set mode to Cyrillic
+			break;
+		case CELL_KB_MAPPING_KOREAN_KOREA:
+			// TODO: set mode to Hangul
+			break;
+		case CELL_KB_MAPPING_CHINESE_TRADITIONAL:
+			// TODO: set mode to Bopofomo
+			break;
+		default:
+			break;
+		}
+		break;
+	case CELL_KEY2CHAR_MODE_NATIVE2:
+		if (mapping == CELL_KB_MAPPING_CHINESE_TRADITIONAL)
+		{
+			// TODO: set mode to Cangjie
+		}
+		break;
+	default:
+		break; // Unreachable
+	}
+
 	return CELL_OK;
 }
 
-error_code cellKey2CharSetArrangement(vm::ptr<u8> handle, s32 arrange)
+error_code cellKey2CharSetArrangement(vm::ptr<CellKey2CharHandle> handle, s32 arrange)
 {
 	cellKey2char.todo("cellKey2CharSetArrangement(handle=*0x%x, arrange=0x%x)", handle, arrange);
+
+	if (!handle)
+		return CELL_K2C_ERROR_INVALID_HANDLE;
+
+	if (handle->data[8] == 0)
+		return CELL_K2C_ERROR_UNINITIALIZED;
+
+	if (arrange < CELL_KB_MAPPING_101 || arrange > CELL_KB_MAPPING_TURKISH_TURKEY)
+		return CELL_K2C_ERROR_INVALID_PARAMETER;
+
 	return CELL_OK;
 }