diff --git a/converter/pc98_usb/config.h b/converter/pc98_usb/config.h
index 6f9f8fc3..6ef2c6ac 100644
--- a/converter/pc98_usb/config.h
+++ b/converter/pc98_usb/config.h
@@ -19,7 +19,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define CONFIG_H
 
 #define VENDOR_ID       0xFEED
-#define PRODUCT_ID      0x3333
+#define PRODUCT_ID      0x9898
 #define DEVICE_VER      0x0100
 #define MANUFACTURER    t.m.k.
 #define PRODUCT         PC98 keyboard converter
@@ -38,36 +38,40 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* PC98 control */
-#define PC98_RST_DDR    DDRD
-#define PC98_RST_PORT   PORTD
-#define PC98_RST_BIT    1
-#define PC98_RDY_DDR    DDRD
-#define PC98_RDY_PORT   PORTD
-#define PC98_RDY_BIT    4
-#define PC98_RTY_DDR    DDRD
-#define PC98_RTY_PORT   PORTD
-#define PC98_RTY_BIT    5
 
-/* Serial(USART) configuration
- *     asynchronous, negative logic, 19200baud, no flow control
+/* PC98 Serial(USART) configuration
+ *     asynchronous, positive logic, 19200baud, bit order: LSB first
  *     1-start bit, 8-data bit, odd parity, 1-stop bit
  */
 #define SERIAL_BAUD 19200
 #define SERIAL_PARITY_ODD
 #define SERIAL_BIT_ORDER_LSB
 
+/* PC98 Reset Port */
+#define PC98_RST_DDR    DDRD
+#define PC98_RST_PORT   PORTD
+#define PC98_RST_BIT    1
+/* PC98 Ready Port */
+#define PC98_RDY_DDR    DDRD
+#define PC98_RDY_PORT   PORTD
+#define PC98_RDY_BIT    4
+/* PC98 Retry Port */
+#define PC98_RTY_DDR    DDRD
+#define PC98_RTY_PORT   PORTD
+#define PC98_RTY_BIT    5
+
+/* RXD Port */
 #define SERIAL_RXD_DDR  DDRD
 #define SERIAL_RXD_PORT PORTD
 #define SERIAL_RXD_PIN  PIND
 #define SERIAL_RXD_BIT  2
+#define SERIAL_RXD_READ()       (SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
+/* RXD Interupt */
 #define SERIAL_RXD_VECT INT2_vect
 #define SERIAL_RXD_INIT()  do { \
     /* pin configuration: input with pull-up */ \
     SERIAL_RXD_DDR &= ~(1<<SERIAL_RXD_BIT);     \
     SERIAL_RXD_PORT |= (1<<SERIAL_RXD_BIT);     \
-    /* enable interrupt: INT2(rising edge) */   \
-    /*EICRA |= ((1<<ISC21)|(1<<ISC20));*/           \
     /* enable interrupt: INT2(falling edge) */  \
     EICRA |= ((1<<ISC21)|(0<<ISC20));           \
     EIMSK |= (1<<INT2);                         \
@@ -77,9 +81,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     /* clear interrupt  flag */     \
     EIFR = (1<<INTF2);              \
 } while (0)
-//#define SERIAL_RXD_READ()    (~SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
-#define SERIAL_RXD_READ()    ((SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT)))
 
+/* TXD Port: Not used */
 #define SERIAL_TXD_DDR  DDRD
 #define SERIAL_TXD_PORT PORTD
 #define SERIAL_TXD_PIN  PIND
diff --git a/converter/pc98_usb/keymap.c b/converter/pc98_usb/keymap.c
index 048a863c..1e2dd03d 100644
--- a/converter/pc98_usb/keymap.c
+++ b/converter/pc98_usb/keymap.c
@@ -25,65 +25,50 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 
-/* Sun type 5 keyboard
-,-------.  ,---,  ,---------------. ,---------------. ,---------------.   ,-----------. ,---------------.
-|   76  |  |   |  | 05| 06| 08| 0A| | 0C| 0E| 10| 11| | 12| 07| 09| 0B|   | 16| 17| 15| | 2D| 02| 04| 30|
-`-------'  `---'  `---------------' `---------------' `---------------'   `-----------' `---------------'
-,-------.  ,-----------------------------------------------------------.  ,-----------. ,---------------.
-| 01| 03|  | 1D| 1E| 1F| 20| 21| 22| 23| 24| 25| 26| 27| 28| 29| 58| 2A|  | 2C| 34| 60| | 62| 2E| 2F| 47|
-|-------|  |-----------------------------------------------------------|  |------------ |---------------|
-| 19| 1A|  |  35 | 36| 37| 38| 39| 3A| 3B| 3C| 3D| 3E| 3F| 40| 41| 2B  |  | 42| 4A| 7B| | 44| 45| 46|   |
-|-------|  |-----------------------------------------------------------|  `-----------' |-----------| 7D|
-| 31| 33|  |  4C  | 4D| 4E| 4F| 50| 51| 52| 53| 54| 55| 56| 57|   59   |                | 5B| 5C| 5D|   |
-|-------|  |-----------------------------------------------------------|      ,---.     |-----------|---|
-| 48| 49|  |   63   | 64| 65| 66| 67| 68| 69| 6A| 6B| 6C| 6D|    6E    |      | 14|     | 70| 71| 72|   |
-|-------|  |-----------------------------------------------------------|  .-----------. |-----------| 5A|
-| 5F| 61|  | 77 | 13| 78 |*73 |       79         |*74 |*75| 7A | 43| 0D|  | 18| 1B| 1C| |   5E  | 32|   |
-`-------'  `-----------------------------------------------------------'  `-----------' `---------------'
+/* PC-9801-98-S02   Raku Raku keyboard(Luckyboard) Normal Mode
+  ,---------------------------------------------------------------.
+  | 60| 61| 62| 63| 64| 65| 66| 67| 68| 69| 6A| 6B| 36| 37| 3F| 3E|
+  `---------------------------------------------------------------'
+  ,---------------------------------------------------------------.
+  |    00| 01| 02| 03| 04| 05|  58|  71| 06| 07| 08| 09| 0A|    0E|
+  |---------------------------------------------------------------|
+  |   0F| 10| 11| 12| 13| 14|    3A     | 15| 16| 17| 18| 19|   1C|
+  |---------------------------------------------------------------|
+  |  74| 20| 21| 22| 23| 24|  3B  |  3C  | 25| 26| 27| 28| 29|    |
+  |---------------------------------------------------------------|
+  | 70| 2A| 2B| 2C| 2D| 2E| 38|  3D   | 39| 2F| 30| 31| 32| 33| 70|
+  `---------------------------------------------------------------'
+          | 73|   51|   5B|   59|       34|   5A|   35| xx|
+          `-----------------------------------------------'
+  xx: 74 35 F4 B5
 */
 #define KEYMAP( \
-      K76,        K05,K06,K08,K0A,    K0C,K0E,K10,K11,    K12,K07,K09,K0B,  K16,K17,K15,  K2D,K02,K04,K30, \
-    K01,K03,  K1D,K1E,K1F,K20,K21,K22,K23,K24,K25,K26,K27,K28,K29,K58,K2A,  K2C,K34,K60,  K62,K2E,K2F,K47, \
-    K19,K1A,  K35, K36,K37,K38,K39,K3A,K3B,K3C,K3D,K3E,K3F,K40,K41,   K2B,  K42,K4A,K7B,  K44,K45,K46,K7D, \
-    K31,K33,  K4C,  K4D,K4E,K4F,K50,K51,K52,K53,K54,K55,K56,K57,      K59,                K5B,K5C,K5D,     \
-    K48,K49,  K63,   K64,K65,K66,K67,K68,K69,K6A,K6B,K6C,K6D,         K6E,      K14,      K70,K71,K72,K5A, \
-    K5F,K61,  K77,K13, K78, K73,        K79,      K74, K75, K7A, K43, K0D,  K18,K1B,K1C,  K5E,    K32      \
+    K60, K61, K62, K63, K64, K65, K66, K67, K68, K69, K6A, K6B, K36, K37, K3F, K3E, \
+      K00,  K01, K02, K03, K04, K05,  K58, K71,   K06, K07, K08, K09, K0A,    K0E,  \
+      K0F,  K10, K11, K12, K13, K14,     K3A,     K15, K16, K17, K18, K19,    K1C,  \
+      K74, K20, K21, K22, K23, K24,   K3B,  K3C,   K25, K26, K27, K28, K29,         \
+      K70,K2A, K2B, K2C, K2D, K2E, K38,  K3D,  K39, K2F, K30, K31, K32, K33,        \
+               K73,  K51, K5B, K59,        K34,        K5A,  K35                    \
 ) { \
-    { KC_NO,    KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
-    { KC_##K08, KC_##K09, KC_##K0A, KC_##K0B, KC_##K0C, KC_##K0D, KC_##K0E, KC_NO,   }, \
+    { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
+    { KC_##K08, KC_##K09, KC_##K0A, KC_NO,    KC_NO,    KC_NO,    KC_##K0E, KC_##K0F }, \
     { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \
-    { KC_##K18, KC_##K19, KC_##K1A, KC_##K1B, KC_##K1C, KC_##K1D, KC_##K1E, KC_##K1F }, \
+    { KC_##K18, KC_##K19, KC_NO,    KC_NO,    KC_##K1C, KC_NO,    KC_NO,    KC_NO    }, \
     { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26, KC_##K27 }, \
     { KC_##K28, KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \
     { KC_##K30, KC_##K31, KC_##K32, KC_##K33, KC_##K34, KC_##K35, KC_##K36, KC_##K37 }, \
     { KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_##K3F }, \
-    { KC_##K40, KC_##K41, KC_##K42, KC_##K43, KC_##K44, KC_##K45, KC_##K46, KC_##K47 }, \
-    { KC_##K48, KC_##K49, KC_##K4A, KC_NO,    KC_##K4C, KC_##K4D, KC_##K4E, KC_##K4F }, \
-    { KC_##K50, KC_##K51, KC_##K52, KC_##K53, KC_##K54, KC_##K55, KC_##K56, KC_##K57 }, \
-    { KC_##K58, KC_##K59, KC_##K5A, KC_##K5B, KC_##K5C, KC_##K5D, KC_##K5E, KC_##K5F }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_##K51, KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_NO,    KC_##K5A, KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
     { KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66, KC_##K67 }, \
-    { KC_##K68, KC_##K69, KC_##K6A, KC_##K6B, KC_##K6C, KC_##K6D, KC_##K6E, KC_NO    }, \
-    { KC_##K70, KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76, KC_##K77 }, \
-    { KC_##K78, KC_##K79, KC_##K7A, KC_##K7B, KC_NO,    KC_##K7D, KC_NO,    KC_NO    }  \
+    { KC_##K68, KC_##K69, KC_##K6A, KC_##K6B, KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_##K70, KC_NO,    KC_NO,    KC_##K73, KC_##K74, KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }  \
 }
 
-/* CTCSP SHORT TYPE KEYBOARD */
-#define SHORT_TYPE( \
-    K01, K05,K06,K08,K0A,K0C,K0E, K61,K49,K33, K30, K2C,K34,K60, \
-         K10,K11,K12,K07,K09,K0B,                   K42,K4A,K7B, \
-    K1D,K1E,K1F,K20,K21,K22,K23,K24,K25,K26,K27,K28,K29,K58,K2A, \
-    K35, K36,K37,K38,K39,K3A,K3B,K3C,K3D,K3E,K3F,K40,K41,   K2B, \
-    K4C,  K4D,K4E,K4F,K50,K51,K52,K53,K54,K55,K56,K57,      K59, \
-    K63,   K64,K65,K66,K67,K68,K69,K6A,K6B,K6C,K6D, K0D,K14,K6E, \
-    K77,K13, K78,             K79,      K7A,K43,K62,K18,K1B,K1C  \
-) KEYMAP( \
-         HELP,           K05,K06,K08,K0A,    K0C,K0E,K10,K11,    K12,K07,K09,K0B,  PSCR,SLCK,PAUS,  MUTE,VOLD,VOLU,PWR,  \
-    K01,    AGAIN,   K1D,K1E,K1F,K20,K21,K22,K23,K24,K25,K26,K27,K28,K29,K58,K2A,  K2C, K34, K60,   K62, PSLS,PAST,PMNS, \
-    MENU,   UNDO,    K35, K36,K37,K38,K39,K3A,K3B,K3C,K3D,K3E,K3F,K40,K41,   K2B,  K42, K4A, K7B,   P7,  P8, P9,  PPLS,  \
-    SELECT, COPY,    K4C,  K4D,K4E,K4F,K50,K51,K52,K53,K54,K55,K56,K57,      K59,                   P4,  P5, P6,         \
-    EXECUTE,PASTE,   K63,   K64,K65,K66,K67,K68,K69,K6A,K6B,K6C,K6D,         K6E,       K14,        P1,  P2, P3,  PENT,  \
-    FIND,   CUT,     K77,K13, K78, HENK,       K79,      MHEN, KANA, K7A,K43,K0D,  K18, K1B, K1C,   P0,      PDOT        \
-)
+
 
 
 // Assign Fn key(0-7) to a layer to which switch with the Fn key pressed.
@@ -113,65 +98,29 @@ static const uint8_t PROGMEM fn_keycode[] = {
 
 
 static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-/*
+    /*
+  ,---------------------------------------------------------------.
+  | 60| 61| 62| 63| 64| 65| 66| 67| 68| 69| 6A| 6B| 36| 37| 3F| 3E|
+  `---------------------------------------------------------------'
+  ,---------------------------------------------------------------.
+  |    00| 01| 02| 03| 04| 05|  58|  71| 06| 07| 08| 09| 0A|    0E|
+  |---------------------------------------------------------------|
+  |   0F| 10| 11| 12| 13| 14|    3A     | 15| 16| 17| 18| 19|   1C|
+  |---------------------------------------------------------------|
+  |  74| 20| 21| 22| 23| 24|  MINS|   EQL| 25| 26| 27| 28| 29|    |
+  |---------------------------------------------------------------|
+  | 70| 2A| 2B| 2C| 2D| 2E| 38|  3D   | 39| 2F| 30| 31| 32| 33| 70|
+  `---------------------------------------------------------------'
+          | 73|   51|   5B|   59|       34|   5A|   35| xx|
+          `-----------------------------------------------'
+    */
     KEYMAP(
-         HELP,       F1, F2, F3, F4,         F5, F6, F7, F8,         F9, F10,F11,F12,   PSCR,SLCK,PAUS,  MUTE,VOLD,VOLU,PWR,
-    STOP,   AGAIN,   ESC,1,  2,  3,  4,  5,  6,  7,  8,  9,  0,   MINS,EQL, BSLS,GRV,   INS, HOME,PGUP,  NLCK,PSLS,PAST,PMNS,
-    MENU,   UNDO,    TAB, Q,  W,  E,  R,  T,  Y,  U,  I,  O,  P,   LBRC,RBRC,    BSPC,  DEL, END, PGDN,  P7,  P8, P9,  PPLS,
-    SELECT, COPY,    LCTL, A,  S,  D,  F,  G,  H,  J,  K,  L,  SCLN,QUOT,        ENT,                    P4,  P5, P6,
-    EXECUTE,PASTE,   LSFT,  Z,  X,  C,  V,  B,  N,  M,  COMM,DOT,SLSH,           RSFT,       UP,         P1,  P2, P3,  PENT,
-    FIND,   CUT,     CAPS, LALT, LGUI,HENK,  SPC,            MHEN,KANA,RGUI,APP, RALT,  LEFT,DOWN,RGHT,  P0,      PDOT
-    ),
-*/
-    // 0: default
-    SHORT_TYPE(
-        STOP, F1,F2,F3,F4, F5, F6,   CUT,PASTE,COPY,PWR,    INS, HOME,PGUP,
-              F7,F8,F9,F10,F11,F12,                         DEL, END, PGDN,
-        ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSLS,GRV,
-        TAB,  Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,    BSPC,
-        LCTL,  A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,        ENT,
-        LSFT,   Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,  RALT,UP,  RSFT,
-        CAPS,LALT,LGUI,            SPC,              RGUI,APP, NLCK,LEFT,DOWN,RGHT
-    ),
-    // 1: with layer keys
-    SHORT_TYPE(
-        ESC,  F1,F2,F3,F4, F5, F6,   CUT,PASTE,COPY,PWR,    INS, HOME,PGUP,
-              F7,F8,F9,F10,F11,F12,                         DEL, END, PGDN,
-        ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSLS,GRV,
-        TAB,  Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,    BSPC,
-        LCTL,  A,   S,   D,   F,   G,   H,   J,   K,   L,   FN1, QUOT,        ENT,
-        LSFT,   Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, FN2,   RSFT,UP,  FN0,
-        CAPS,LALT,LGUI,            SPC,              RGUI,RALT,FN0, LEFT,DOWN,RGHT
-    ),
-    // 2: HHKB
-    SHORT_TYPE(
-        ESC,  F1,F2,F3,F4, F5, F6,   CUT,PASTE,COPY,PWR,    INS, HOME,PGUP,
-              F7,F8,F9,F10,F11,F12,                         DEL, END, PGDN,
-        GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, INS, DEL,
-        CAPS, NO,  NO,  NO,  NO,  NO,  NO,  NO,  PSCR,SLCK,PAUS,UP,  NO,      BSPC,
-        LCTL,  VOLD,VOLU,MUTE,NO,  NO,  NO,  NO,  HOME,PGUP,LEFT,RGHT,        ENT,
-        LSFT,   Z,   X,   C,   V,   B,   NO,  NO,  END, PGDN,DOWN,  RSFT,PGUP,FN0,
-        CAPS,LALT,LGUI,            SPC,              RGUI,RALT,FN0, HOME,PGDN,END
-    ),
-    // 3: Mousekey
-    SHORT_TYPE(
-        ESC,  F1,F2,F3,F4, F5, F6,   CUT,PASTE,COPY,PWR,    INS, HOME,PGUP,
-              F7,F8,F9,F10,F11,F12,                         DEL, END, PGDN,
-        GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, INS, DEL,
-        CAPS, NO,  NO,  NO,  NO,  NO,  WH_L,WH_D,WH_U,WH_R,NO,  NO,  NO,      BSPC,
-        LCTL,  NO,  ACL0,ACL1,ACL2,NO,  MS_L,MS_D,MS_U,MS_R,FN1, NO,          ENT,
-        LSFT,   NO,  NO,  NO,  NO,  BTN3,BTN2,BTN1,NO,  NO,  NO,    RSFT,UP,  NO,
-        CAPS,LALT,LGUI,            BTN1,             RGUI,RALT,NO,  LEFT,DOWN,RGHT
-    ),
-    // 4: Cursor
-    SHORT_TYPE(
-        ESC,  F1,F2,F3,F4, F5, F6,   CUT,PASTE,COPY,PWR,    INS, HOME,PGUP,
-              F7,F8,F9,F10,F11,F12,                         DEL, END, PGDN,
-        GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, INS, DEL,
-        CAPS, NO,  NO,  NO,  NO,  NO,  HOME,PGDN,PGUP,END, NO,  NO,  NO,      BSPC,
-        LCTL,  NO,  NO,  NO,  NO,  NO,  LEFT,DOWN,UP,  RGHT,NO,  NO,          ENT,
-        LSFT,   NO,  NO,  NO,  NO,  NO,  HOME,PGDN,PGUP,END, FN2,   RSFT,UP,  NO,
-        CAPS,LALT,LGUI,            BTN1,             RGUI,RALT,NO,  LEFT,DOWN,RGHT
+    PAUS,COPY,  F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9, F10, F11, F12, F13, F14,
+      ESC,    1,   2,   3,   4,   5,    NO, NO,     6,   7,   8,   9,   0,   BSPC,
+      TAB,    Q,   W,   E,   R,   T,      UP,       Y,   U,   I,   O,   P,   ENT,
+      LCTL,  A,   S,   D,   F,   G,  MINS,  EQL,     H,   J,   K,   L,SCLN,
+      LSFT, Z,   X,   C,   V,   B, INS, DOWN,  DEL,   N,   M,COMM, DOT,SLSH,
+              LGUI, LALT, LCTL, LSFT,      SPC,      SPC,   RALT
     ),
 };
 
@@ -190,3 +139,49 @@ uint8_t keymap_fn_keycode(uint8_t index)
 {
     return pgm_read_byte(&fn_keycode[index]);
 }
+
+
+#if 0
+/* PC-9801-98-S02   Raku Raku keyboard(Luckyboard) M-siki mode
+  ,---------------------------------------------------------------.
+  | 60| 61| 62| 63| 64| 65| 66| 67| 68| 69| 6A| 6B| 36| 37| 3F| 3E|
+  `---------------------------------------------------------------'
+  ,---------------------------------------------------------------.
+  |    00| 01| 02| 03| 04| 05| NUM|CAPS| 06| 07| 08| 09| 0A|    0E|
+  |---------------------------------------------------------------|
+  |   0F| 10| 25| 20| 23| 2B|    3A     | 2F| 15| 13| 11| 19|   1C|
+  |---------------------------------------------------------------|
+  |  74| 12| 16| 17| 1D| 18|  3B  |  3C  | 24| 1E| 14| 2E| 22|    |
+  |---------------------------------------------------------------|
+  | 70| xx| 2A| 2C| xx| xx| 38|  3D   | 39| 21| 29| 1F| xx| 2D| 70|
+  `---------------------------------------------------------------'
+          | 73|   51|   xx|   xx|       34|   xx|   35| xx|
+          `-----------------------------------------------'
+*/
+
+#define KEYMAP_M( \
+    K60, K61, K62, K63, K64, K65, K66, K67, K68, K69, K6A, K6B, K36, K37, K3F, K3E, \
+      K00,  K01, K02, K03, K04, K05,              K06, K07, K08, K09, K0A,    K0E,  \
+      K0F,  K10, K25, K23, K20, K2B,     K3A,     K2F, K15, K13, K11, K19,    K1C,  \
+      K74, K12, K16, K17, K1D, K18,   K3B,  K3C,   K24, K1E, K14, K2E, K22,         \
+      K70,     K2A, K2C,           K38,  K3D,  K39, K21, K29, K1F,      K2D,        \
+               K73,  K51,                  K34,              K35                    \
+) { \
+    { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
+    { KC_##K08, KC_##K09, KC_##K0A, KC_NO,    KC_NO,    KC_NO,    KC_##K0E, KC_##K0F }, \
+    { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \
+    { KC_##K18, KC_##K19, KC_NO,    KC_NO,    KC_##K1C, KC_##K1D, KC_##K1E, KC_##K1F }, \
+    { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_##K34, KC_##K35, KC_##K36, KC_##K37 }, \
+    { KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_##K3F }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_##K51, KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_##K66, KC_##K67 }, \
+    { KC_##K68, KC_##K69, KC_##K6A, KC_##K6B, KC_NO,    KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_##K70, KC_NO,    KC_NO,    KC_##K73, KC_##K74, KC_NO,    KC_NO,    KC_NO    }, \
+    { KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO,    KC_NO    }  \
+}
+#endif
diff --git a/converter/pc98_usb/matrix.c b/converter/pc98_usb/matrix.c
index ef2bc381..2f1e821c 100644
--- a/converter/pc98_usb/matrix.c
+++ b/converter/pc98_usb/matrix.c
@@ -65,6 +65,7 @@ void matrix_init(void)
 {
     print_enable = true;
     debug_enable = true;
+    //debug_matrix = true;
 
     PC98_RST_DDR |= (1<<PC98_RST_BIT);
     PC98_RDY_DDR |= (1<<PC98_RDY_BIT);
@@ -99,32 +100,15 @@ uint8_t matrix_scan(void)
 {
     is_modified = false;
 
-    uint8_t code;
+    uint16_t code;
     PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
     _delay_us(30);
-    code = serial_recv();
+    code = serial_recv2();
     PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
-    if (!code) return 0;
+    if (code == -1) return 0;
 
     debug_hex(code); debug(" ");
 
-/*
-    switch (code) {
-        case 0x7E:  // reset fail
-        case 0xFE:  // layout
-        case 0xFF:  // reset success
-            _delay_ms(500);
-            // ignore response byte
-            debug("(response ignored:");
-            while ((code = serial_recv())) { debug(" "); debug_hex(code); }
-            debug(") ");
-            // FALL THROUGH
-        case 0x7F:
-            // all keys up
-            for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
-            return 0;
-    }
-
     if (code&0x80) {
         // break code
         if (matrix_is_on(ROW(code), COL(code))) {
@@ -138,7 +122,6 @@ uint8_t matrix_scan(void)
             is_modified = true;
         }
     }
-*/
     return code;
 }