diff --git a/converter/pc98_usb/README b/converter/pc98_usb/README
index 7d9547d5..23f1b614 100644
--- a/converter/pc98_usb/README
+++ b/converter/pc98_usb/README
@@ -60,6 +60,11 @@ http://davy.nyacom.net/kbd98usb/
 
 PC98 to PS/2
 http://www.tsp.ne.jp/~sawada/mago/c_gka98at.htm
+http://www.tsp.ne.jp/~sawada/mago/src/gka98at.asm
 
 PC98 keyboard commands
 http://www.webtech.co.jp/company/doc/undocumented_mem/io_kb.txt
+
+
+Inhibit repeating key:
+0x9C, 0x70
diff --git a/converter/pc98_usb/config.h b/converter/pc98_usb/config.h
index 6ef2c6ac..aa0476e3 100644
--- a/converter/pc98_usb/config.h
+++ b/converter/pc98_usb/config.h
@@ -30,12 +30,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 16
 #define MATRIX_COLS 8
 
+/* To use new keymap framework */
+#define USE_KEYMAP_V2
 
 /* key combination for command */
 #define IS_COMMAND() ( \
-    keyboard_report->mods == (MOD_BIT(KC_LALT) | MOD_BIT(KC_RALT)) || \
-    keyboard_report->mods == (MOD_BIT(KC_LGUI) | MOD_BIT(KC_RGUI)) || \
-    keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+    host_get_first_key() == KC_CANCEL \
 )
 
 
@@ -46,11 +46,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SERIAL_BAUD 19200
 #define SERIAL_PARITY_ODD
 #define SERIAL_BIT_ORDER_LSB
+#define SERIAL_LOGIC_POSITIVE
 
-/* PC98 Reset Port */
+/* PC98 Reset Port shared with TXD */
 #define PC98_RST_DDR    DDRD
 #define PC98_RST_PORT   PORTD
-#define PC98_RST_BIT    1
+#define PC98_RST_BIT    3
 /* PC98 Ready Port */
 #define PC98_RDY_DDR    DDRD
 #define PC98_RDY_PORT   PORTD
@@ -65,7 +66,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define SERIAL_RXD_PORT PORTD
 #define SERIAL_RXD_PIN  PIND
 #define SERIAL_RXD_BIT  2
+#ifdef SERIAL_LOGIC_NEGATIVE
+#define SERIAL_RXD_READ()       ~(SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
+#else
 #define SERIAL_RXD_READ()       (SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
+#endif
 /* RXD Interupt */
 #define SERIAL_RXD_VECT INT2_vect
 #define SERIAL_RXD_INIT()  do { \
@@ -75,6 +80,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     /* enable interrupt: INT2(falling edge) */  \
     EICRA |= ((1<<ISC21)|(0<<ISC20));           \
     EIMSK |= (1<<INT2);                         \
+    sei();                                      \
 } while (0)
 #define SERIAL_RXD_INT_ENTER()
 #define SERIAL_RXD_INT_EXIT() do {  \
@@ -82,14 +88,18 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     EIFR = (1<<INTF2);              \
 } while (0)
 
-/* TXD Port: Not used */
+/* TXD Port */
 #define SERIAL_TXD_DDR  DDRD
 #define SERIAL_TXD_PORT PORTD
 #define SERIAL_TXD_PIN  PIND
 #define SERIAL_TXD_BIT  3
-/* negative logic */
+#ifdef SERIAL_LOGIC_NEGATIVE
 #define SERIAL_TXD_ON()     do { SERIAL_TXD_PORT &= ~(1<<SERIAL_TXD_BIT); } while (0)
 #define SERIAL_TXD_OFF()    do { SERIAL_TXD_PORT |=  (1<<SERIAL_TXD_BIT); } while (0)
+#else
+#define SERIAL_TXD_ON()     do { SERIAL_TXD_PORT |=  (1<<SERIAL_TXD_BIT); } while (0)
+#define SERIAL_TXD_OFF()    do { SERIAL_TXD_PORT &= ~(1<<SERIAL_TXD_BIT); } while (0)
+#endif
 #define SERIAL_TXD_INIT()   do { \
     /* pin configuration: output */         \
     SERIAL_TXD_DDR |= (1<<SERIAL_TXD_BIT);  \
diff --git a/converter/pc98_usb/keymap.c b/converter/pc98_usb/keymap.c
index 1e2dd03d..6bc549b0 100644
--- a/converter/pc98_usb/keymap.c
+++ b/converter/pc98_usb/keymap.c
@@ -19,6 +19,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <stdbool.h>
 #include <avr/pgmspace.h>
 #include "keycode.h"
+#include "action.h"
+#include "action_macro.h"
+#include "layer_switch.h"
 #include "util.h"
 #include "keymap.h"
 
@@ -33,7 +36,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
   |    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|
@@ -70,33 +73,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 
-
-// Assign Fn key(0-7) to a layer to which switch with the Fn key pressed.
-static const uint8_t PROGMEM fn_layer[] = {
-    2,              // Fn0
-    3,              // Fn1
-    4,              // Fn2
-    0,              // Fn3
-    0,              // Fn4
-    0,              // Fn5
-    0,              // Fn6
-    0               // Fn7
-};
-
-// Assign Fn key(0-7) to a keycode sent when release Fn key without use of the layer.
-// See layer.c for details.
-static const uint8_t PROGMEM fn_keycode[] = {
-    KC_NO,          // Fn0
-    KC_SCLN,        // Fn1
-    KC_SLSH,        // Fn2
-    KC_NO,          // Fn3
-    KC_NO,          // Fn4
-    KC_NO,          // Fn5
-    KC_NO,          // Fn6
-    KC_NO           // Fn7
-};
-
-
 static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     /*
   ,---------------------------------------------------------------.
@@ -115,73 +91,80 @@ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
           `-----------------------------------------------'
     */
     KEYMAP(
-    PAUS,COPY,  F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9, F10, F11, F12, F13, F14,
+  CANCEL,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,
+      LCTL,  A,   S,   D,   F,   G,  MINS,  EQL,     H,   J,   K,   L, FN2,
+      LSFT, Z,   X,   C,   V,   B, INS, DOWN,  DEL,   N,   M,COMM, DOT, FN1,
+              LGUI, LALT, LCTL, LSFT,      SPC,      SPC,   RALT
+    ),
+    KEYMAP(
+    PAUS,COPY,  F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9, F10, F11, F12, F13, F14,
+      GRV,   F1,  F2,  F3,  F4,  F5,    NO, NO,    F6,  F7,  F8,  F9, F10,    DEL,
+      TAB,    Q,   W,   E,   R,   T,      UP,    HOME,PGDN,PGUP, END,   P,   ENT,
+      LCTL,  A,   S,   D,   F,   G,  MINS,  EQL,  LEFT,DOWN,  UP,RGHT,SCLN,
+      LSFT, Z,   X,   C,   V,   B, INS, DOWN,  DEL,HOME,PGDN,PGUP, END,TRNS,
+              LGUI, LALT, LCTL, LSFT,      SPC,      SPC,   RALT
+    ),
+    KEYMAP(
+    PAUS,COPY,  F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9, F10, F11, F12, F13, F14,
+      GRV,   F1,  F2,  F3,  F4,  F5,    NO, NO,    F6,  F7,  F8,  F9, F10,    DEL,
+      TAB,    Q,   W,   E,   R,   T,      UP,    WH_L,WH_D,WH_U,WH_R,   P,   ENT,
+      LCTL,  A,   S,   D,   F,   G,  MINS,  EQL,  MS_L,MS_D,MS_U,MS_R,TRNS,
+      LSFT, Z,   X,   C,   V,   B, INS, DOWN, BTN3,BTN2,BTN1,BTN4,BTN5,TRNS,
               LGUI, LALT, LCTL, LSFT,      SPC,      SPC,   RALT
     ),
 };
 
+static const uint8_t PROGMEM overlays[][MATRIX_ROWS][MATRIX_COLS] = {};
+
+static const uint16_t PROGMEM fn_actions[] = {
+    ACTION_KEYMAP_TAP_TOGGLE(0),                 // FN0
+    ACTION_KEYMAP_TAP_KEY(1, KC_SLASH),          // FN1
+    ACTION_KEYMAP_TAP_KEY(2, KC_SCLN),           // FN2
+    ACTION_KEYMAP(2),                            // FN3
+};
 
-uint8_t keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t col)
-{
-    return pgm_read_byte(&keymaps[(layer)][(row)][(col)]);
-}
 
-uint8_t keymap_fn_layer(uint8_t index)
-{
-    return pgm_read_byte(&fn_layer[index]);
-}
 
-uint8_t keymap_fn_keycode(uint8_t index)
+/*
+ * No need to edit.
+ */
+#define KEYMAPS_SIZE    (sizeof(keymaps) / sizeof(keymaps[0]))
+#define OVERLAYS_SIZE   (sizeof(overlays) / sizeof(overlays[0]))
+#define FN_ACTIONS_SIZE (sizeof(fn_actions) / sizeof(fn_actions[0]))
+
+/* translates key to keycode */
+uint8_t keymap_key_to_keycode(uint8_t layer, key_t key)
 {
-    return pgm_read_byte(&fn_keycode[index]);
+    /* Overlay: 16-31(OVERLAY_BIT(0x10) | overlay_layer) */
+    if (layer & OVERLAY_BIT) {
+        layer &= OVERLAY_MASK;
+        if (layer < OVERLAYS_SIZE) {
+            return pgm_read_byte(&overlays[(layer)][(key.row)][(key.col)]);
+        } else {
+            return KC_TRANSPARENT;
+        }
+    } 
+    /* Keymap: 0-15 */
+    else {
+        if (layer < KEYMAPS_SIZE) {
+            return pgm_read_byte(&keymaps[(layer)][(key.row)][(key.col)]);
+        } else {
+            // fall back to layer 0
+            return pgm_read_byte(&keymaps[0][(key.row)][(key.col)]);
+        }
+    }
 }
 
-
-#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    }  \
+/* translates Fn keycode to action */
+action_t keymap_fn_to_action(uint8_t keycode)
+{
+    action_t action;
+    if (FN_INDEX(keycode) < FN_ACTIONS_SIZE) {
+        action.code = pgm_read_word(&fn_actions[FN_INDEX(keycode)]);
+    } else {
+        action.code = ACTION_NO;
+    }
+    return action;
 }
-#endif