Fix bug on RAW2SCAN. Add work around for M0110A.

- Bug fix: Macro RAW2SCAN doesn't work and converted into static inline function.
- Add Exceptional handling for M0110A arrow keys and calc keys.
- Fix keymap.

7 files changed, 223 insertions, 195 deletions

diff --git a/m0110.c b/m0110.c
index 20b4860aa0..638897ae9d 100644
--- a/m0110.c
+++ b/m0110.c
@@ -44,6 +44,7 @@ POSSIBILITY OF SUCH DAMAGE.
 #include "debug.h"
 
 
+static inline uint8_t raw2scan(uint8_t raw);
 static inline uint8_t inquiry(void);
 static inline uint8_t instant(void);
 static inline void clock_lo(void);
@@ -60,147 +61,6 @@ static inline void idle(void);
 static inline void request(void);
 
 
-/*
-Primitive M0110 Library for AVR
-==============================
-
-
-Signaling
----------
-CLOCK is always from KEYBOARD. DATA are sent with MSB first.
-
-1) IDLE: both lines are high.
-    CLOCK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-    DATA  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-2) KEYBOARD->HOST: HOST reads bit on rising edge.
-    CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
-    DATA  ~~~~~~~~~~~~X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
-                      <--> 160us(clock low)
-                         <---> 180us(clock high)
-
-3) HOST->KEYBOARD: HOST asserts bit on falling edge.
-    CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
-    DATA  ~~~~~~|_____X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
-                <----> 840us(request to send by host)                     <---> 80us(hold DATA)
-                      <--> 180us(clock low)
-                         <---> 220us(clock high)
-
-
-Protocol
---------
-COMMAND:
-    Inquiry     0x10    get key event
-    Instant     0x12    get key event
-    Model       0x14    get model number(M0110 responds with 0x09)
-                        bit 7   1 if another device connected(used when keypad exists?)
-                        bit4-6  next device model number
-                        bit1-3  keyboard model number
-                        bit 0   always 1
-    Test        0x16    test(ACK:0x7D/NAK:0x77)
-
-KEY EVENT:
-    bit 7       key state(0:press 1:release)
-    bit 6-1     scan code(see below)
-    bit 0       always 1
-    To get scan code use this: ((bits&(1<<7)) | ((bits&0x7F))>>1).
-
-    Note: On the M0110A, the numpad keys and the arrow keys are preceded by 0x79.
-          Moreover, the numpad keys =, /, * and + are preceded by shift-down 0x71 on press and shift-up 0xF1 on release.
-          So, the data transferred by nupmad 5 is "79 2F" whereas for numpad + it's "71 79 0D".
-
-ARROW KEYS:
-    Arrow keys and Pad+,*,/,=(Calc keys) share same byte sequence and its preceding byte
-    0x71 and 0xF1 means press and release event of SHIFT. These cause very confusing situation.
-    It is difficult or impossible to tell Calc key from Arrow key with SHIFT in some cases.
-
-    Raw key events:
-            press               release
-            ----------------    ----------------
-    Left:         0x79, 0x0D          0x79, 0x8D
-    Right:        0x79, 0x05          0x79, 0x85
-    Up:           0x79, 0x1B          0x79, 0x9B
-    Down:         0x79, 0x11          0x79, 0x91
-    Pad+:   0x71, 0x79, 0x0D    0xF1, 0x79, 0x8D
-    Pad*:   0x71, 0x79, 0x05    0xF1, 0x79, 0x85
-    Pad/:   0x71, 0x79, 0x1B    0xF1, 0x79, 0x9B
-    Pad=:   0x71, 0x79, 0x11    0xF1, 0x79, 0x91
-
-SCAN CODE:
-    m0111_recv_key() function returns follwing scan codes instead of raw key events.
-    Scan codes are 1 byte long and bit7 is set when key is released. 
-
-    M0110
-    ,---------------------------------------------------------.
-    |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backs|
-    |---------------------------------------------------------|
-    |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \|
-    |---------------------------------------------------------|
-    |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return|
-    |---------------------------------------------------------|
-    |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|        |
-    `---------------------------------------------------------'
-         |Opt|Mac |         Space               |Enter|Opt|
-         `------------------------------------------------'
-    ,---------------------------------------------------------.
-    | 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18|   33|
-    |---------------------------------------------------------|
-    |   30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E| 2A|
-    |---------------------------------------------------------|
-    |    39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27|    24|
-    |---------------------------------------------------------|
-    |      38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C|      38|
-    `---------------------------------------------------------'
-         | 3A|  37|             31              |   34| 3A|
-         `------------------------------------------------'
-
-    M0110A
-    ,---------------------------------------------------------. ,---------------.
-    |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Bcksp| |Clr|  =|  /|  *|
-    |---------------------------------------------------------| |---------------|
-    |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|   | |  7|  8|  9|  -|
-    |-----------------------------------------------------'   | |---------------|
-    |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return| |  4|  5|  6|  +|
-    |---------------------------------------------------------| |---------------|
-    |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shft|Up | |  1|  2|  3|   |
-    |---------------------------------------------------------' |-----------|Ent|
-    |Optio|Mac    |           Space           |  \|Lft|Rgt|Dn | |      0|  .|   |
-    `---------------------------------------------------------' `---------------'
-    ,---------------------------------------------------------. ,---------------.
-    | 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18|   33| | 47| 68| 6D| 62|
-    |---------------------------------------------------------| |---------------|
-    |   30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E|   | | 59| 5B| 5C| 4E|
-    |-----------------------------------------------------'   | |---------------|
-    |    39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27|    24| | 56| 57| 58| 66|
-    |---------------------------------------------------------| |---------------|
-    |      38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C|  38| 4D| | 53| 54| 55|   |
-    |---------------------------------------------------------' |-----------| 4C|
-    |   3A|     37|            31             | 2A| 46| 42| 48| |     52| 41|   |
-    `---------------------------------------------------------' `---------------'
-
-
-References
-----------
-Technical Info for 128K/512K and Plus
-    ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20128K.pdf
-    ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20Plus.pdf
-Protocol:
-    Page 20 of Tech Info for 128K/512K
-    http://www.mac.linux-m68k.org/devel/plushw.php
-Connector:
-    Page 20 of Tech Info for 128K/512K
-    http://www.kbdbabel.org/conn/kbd_connector_macplus.png
-Signaling:
-    http://www.kbdbabel.org/signaling/kbd_signaling_mac.png
-    http://typematic.blog.shinobi.jp/Entry/14/
-Scan Codes:
-    Page 22 of Tech Info for 128K/512K
-    Page 07 of Tech Info for Plus
-    http://m0115.web.fc2.com/m0110.jpg
-    http://m0115.web.fc2.com/m0110a.jpg
-*/
-
-
 #define WAIT_US(stat, us, err) do { \
     if (!wait_##stat(us)) { \
         m0110_error = err; \
@@ -307,7 +167,7 @@ uint8_t m0110_recv_key(void)
     switch (key & 0x7F) {
         case M0110_KEYPAD:
             // Pad/Arrow keys
-            return (M0110_RAW2SCAN(instant()) | M0110_KEYPAD_OFFSET);
+            return (raw2scan(instant()) | M0110_KEYPAD_OFFSET);
             break;
         case M0110_SHIFT:
             key2 = instant();
@@ -319,26 +179,34 @@ uint8_t m0110_recv_key(void)
                     case M0110_ARROW_LEFT:
                     case M0110_ARROW_RIGHT:
                         // Calc keys
-                        return (M0110_RAW2SCAN(key3) | M0110_CALC_OFFSET);
+                        return (raw2scan(key3) | M0110_CALC_OFFSET);
                     default:
                         // Shift + Pad/Arrow keys
-                        keybuf = M0110_RAW2SCAN(key3);
-                        return (M0110_RAW2SCAN(key) | M0110_KEYPAD_OFFSET);
+                        keybuf = raw2scan(key3);
+                        return (raw2scan(key) | M0110_KEYPAD_OFFSET);
                 }
             } else {
                 // Shift + other keys
-                keybuf = M0110_RAW2SCAN(key2);
-                return M0110_RAW2SCAN(key);
+                keybuf = raw2scan(key2);
+                return raw2scan(key);
             }
             break;
         default:
             // other keys
-            return M0110_RAW2SCAN(key);
+            return raw2scan(key);
             break;
     }
 }
 
 
+static inline uint8_t raw2scan(uint8_t raw) {
+    return (raw == M0110_NULL) ?  M0110_NULL : (
+                (raw == M0110_ERROR) ?  M0110_ERROR : (
+                    ((raw&0x80) | ((raw&0x7F)>>1))
+                )
+           );
+}
+
 static inline uint8_t inquiry(void)
 {
     m0110_send(M0110_INQUIRY);
@@ -348,7 +216,12 @@ static inline uint8_t inquiry(void)
 static inline uint8_t instant(void)
 {
     m0110_send(M0110_INSTANT);
-    return m0110_recv();
+    //return m0110_recv();
+    uint8_t data = m0110_recv();
+    if (data != 0x7B) {
+        print("data: "); phex(data); print("\n");
+    }
+    return data;
 }
 
 static inline void clock_lo()
@@ -420,3 +293,145 @@ static inline void request(void)
     clock_hi();
     data_lo();
 }
+
+
+
+/*
+Primitive M0110 Library for AVR
+==============================
+
+
+Signaling
+---------
+CLOCK is always from KEYBOARD. DATA are sent with MSB first.
+
+1) IDLE: both lines are high.
+    CLOCK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+    DATA  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+2) KEYBOARD->HOST: HOST reads bit on rising edge.
+    CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
+    DATA  ~~~~~~~~~~~~X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
+                      <--> 160us(clock low)
+                         <---> 180us(clock high)
+
+3) HOST->KEYBOARD: HOST asserts bit on falling edge.
+    CLOCK ~~~~~~~~~~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~|__|~~~~~~~~~~~
+    DATA  ~~~~~~|_____X777777X666666X555555X444444X333333X222222X111111X000000X~~~~~~~
+                <----> 840us(request to send by host)                     <---> 80us(hold DATA)
+                      <--> 180us(clock low)
+                         <---> 220us(clock high)
+
+
+Protocol
+--------
+COMMAND:
+    Inquiry     0x10    get key event
+    Instant     0x12    get key event
+    Model       0x14    get model number(M0110 responds with 0x09)
+                        bit 7   1 if another device connected(used when keypad exists?)
+                        bit4-6  next device model number
+                        bit1-3  keyboard model number
+                        bit 0   always 1
+    Test        0x16    test(ACK:0x7D/NAK:0x77)
+
+KEY EVENT:
+    bit 7       key state(0:press 1:release)
+    bit 6-1     scan code(see below)
+    bit 0       always 1
+    To get scan code use this: ((bits&(1<<7)) | ((bits&0x7F))>>1).
+
+    Note: On the M0110A, the numpad keys and the arrow keys are preceded by 0x79.
+          Moreover, the numpad keys =, /, * and + are preceded by shift-down 0x71 on press and shift-up 0xF1 on release.
+          So, the data transferred by nupmad 5 is "79 2F" whereas for numpad + it's "71 79 0D".
+
+ARROW KEYS:
+    Arrow keys and Pad+,*,/,=(Calc keys) share same byte sequence and its preceding byte
+    0x71 and 0xF1 means press and release event of SHIFT. These cause very confusing situation.
+    It is difficult or impossible to tell Calc key from Arrow key with SHIFT in some cases.
+
+    Raw key events:
+            press               release
+            ----------------    ----------------
+    Left:         0x79, 0x0D          0x79, 0x8D
+    Right:        0x79, 0x05          0x79, 0x85
+    Up:           0x79, 0x1B          0x79, 0x9B
+    Down:         0x79, 0x11          0x79, 0x91
+    Pad+:   0x71, 0x79, 0x0D    0xF1, 0x79, 0x8D
+    Pad*:   0x71, 0x79, 0x05    0xF1, 0x79, 0x85
+    Pad/:   0x71, 0x79, 0x1B    0xF1, 0x79, 0x9B
+    Pad=:   0x71, 0x79, 0x11    0xF1, 0x79, 0x91
+
+SCAN CODE:
+    m0111_recv_key() function returns follwing scan codes instead of raw key events.
+    Scan codes are 1 byte long and bit7 is set when key is released. 
+
+    M0110
+    ,---------------------------------------------------------.
+    |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backs|
+    |---------------------------------------------------------|
+    |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \|
+    |---------------------------------------------------------|
+    |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return|
+    |---------------------------------------------------------|
+    |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|        |
+    `---------------------------------------------------------'
+         |Opt|Mac |         Space               |Enter|Opt|
+         `------------------------------------------------'
+    ,---------------------------------------------------------.
+    | 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18|   33|
+    |---------------------------------------------------------|
+    |   30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E| 2A|
+    |---------------------------------------------------------|
+    |    39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27|    24|
+    |---------------------------------------------------------|
+    |      38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C|      38|
+    `---------------------------------------------------------'
+         | 3A|  37|             31              |   34| 3A|
+         `------------------------------------------------'
+
+    M0110A
+    ,---------------------------------------------------------. ,---------------.
+    |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Bcksp| |Clr|  =|  /|  *|
+    |---------------------------------------------------------| |---------------|
+    |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|   | |  7|  8|  9|  -|
+    |-----------------------------------------------------'   | |---------------|
+    |CapsLo|  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return| |  4|  5|  6|  +|
+    |---------------------------------------------------------| |---------------|
+    |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  ,|  /|Shft|Up | |  1|  2|  3|   |
+    |---------------------------------------------------------' |-----------|Ent|
+    |Optio|Mac    |           Space           |  \|Lft|Rgt|Dn | |      0|  .|   |
+    `---------------------------------------------------------' `---------------'
+    ,---------------------------------------------------------. ,---------------.
+    | 32| 12| 13| 14| 15| 17| 16| 1A| 1C| 19| 1D| 1B| 18|   33| | 47| 68| 6D| 62|
+    |---------------------------------------------------------| |---------------|
+    |   30| 0C| 0D| 0E| 0F| 10| 11| 20| 22| 1F| 23| 21| 1E|   | | 59| 5B| 5C| 4E|
+    |-----------------------------------------------------'   | |---------------|
+    |    39| 00| 01| 02| 03| 05| 04| 26| 28| 25| 29| 27|    24| | 56| 57| 58| 66|
+    |---------------------------------------------------------| |---------------|
+    |      38| 06| 07| 08| 09| 0B| 2D| 2E| 2B| 2F| 2C|  38| 4D| | 53| 54| 55|   |
+    |---------------------------------------------------------' |-----------| 4C|
+    |   3A|     37|            31             | 2A| 46| 42| 48| |     52| 41|   |
+    `---------------------------------------------------------' `---------------'
+
+
+References
+----------
+Technical Info for 128K/512K and Plus
+    ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20128K.pdf
+    ftp://ftp.apple.asimov.net/pub/apple_II/documentation/macintosh/Mac%20Hardware%20Info%20-%20Mac%20Plus.pdf
+Protocol:
+    Page 20 of Tech Info for 128K/512K
+    http://www.mac.linux-m68k.org/devel/plushw.php
+Connector:
+    Page 20 of Tech Info for 128K/512K
+    http://www.kbdbabel.org/conn/kbd_connector_macplus.png
+Signaling:
+    http://www.kbdbabel.org/signaling/kbd_signaling_mac.png
+    http://typematic.blog.shinobi.jp/Entry/14/
+Scan Codes:
+    Page 22 of Tech Info for 128K/512K
+    Page 07 of Tech Info for Plus
+    http://m0115.web.fc2.com/m0110.jpg
+    http://m0115.web.fc2.com/m0110a.jpg
+*/
diff --git a/m0110.h b/m0110.h
index 7d2ffa83a0..792a562b60 100644
--- a/m0110.h
+++ b/m0110.h
@@ -78,15 +78,6 @@ POSSIBILITY OF SUCH DAMAGE.
 #define M0110_KEYPAD_OFFSET 0x40
 #define M0110_CALC_OFFSET   0x60
 
-/* convert key event raw response into scan code */
-#define M0110_RAW2SCAN(key) ( \
-    (key == M0110_NULL) ?  M0110_NULL : ( \
-        (key == M0110_ERROR) ?  M0110_ERROR : ( \
-            ((key&0x80) | ((key&0x7F)>>1)) \
-        ) \
-    ) \
-)
-
 
 extern uint8_t m0110_error;
 
diff --git a/m0110_usb/doc/m0110.jpg b/m0110_usb/doc/m0110.jpg
index ef9a123abc..ef9a123abc 100755..100644
--- a/m0110_usb/doc/m0110.jpg
+++ b/m0110_usb/doc/m0110.jpg
diff --git a/m0110_usb/doc/teensy.jpg b/m0110_usb/doc/teensy.jpg
index 96e93e7e24..96e93e7e24 100755..100644
--- a/m0110_usb/doc/teensy.jpg
+++ b/m0110_usb/doc/teensy.jpg
diff --git a/m0110_usb/keymap.c b/m0110_usb/keymap.c
index 8c509a59b1..c6b7cbd3b3 100644
--- a/m0110_usb/keymap.c
+++ b/m0110_usb/keymap.c
@@ -58,7 +58,7 @@ static const uint8_t PROGMEM fn_layer[] = {
     1,              // Fn0
     2,              // Fn1
     3,              // Fn2
-    0,              // Fn3
+    1,              // Fn3
     0,              // Fn4
     0,              // Fn5
     0,              // Fn6
@@ -68,15 +68,17 @@ static const uint8_t PROGMEM fn_layer[] = {
 // 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[] = {
+#ifndef HASU
     KB_ESC,         // Fn0
-#ifdef HASU
-    KB_SCOLON,      // Fn1
-    KB_SLASH,       // Fn2
-#else
     KB_NO,          // Fn1
     KB_NO,          // Fn2
-#endif
     KB_NO,          // Fn3
+#else
+    KB_NO,          // Fn0
+    KB_SCOLON,      // Fn1
+    KB_SLASH,       // Fn2
+    KB_UP,          // Fn3
+#endif
     KB_NO,          // Fn4
     KB_NO,          // Fn5
     KB_NO,          // Fn6
@@ -107,7 +109,6 @@ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      * |---------------------------------------------------------| |-----------|Ent|
      * |Ctrl |Alt    |         Space         |Gui|  \|Lft|Rgt|Dn | |      0|  .|   |
      * `---------------------------------------------------------' `---------------'
-     * You can register Esc by hitting(press&release) Fn0 quickly.
      *
      * HHKB/WASD cursor Layer(Fn0):
      * ,---------------------------------------------------------. ,---------------.
@@ -122,25 +123,44 @@ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
      * |Ctrl |Alt    |         Space        |Gui |  \|Lft|Rgt|Dn | |      0|  .|   |
      * `---------------------------------------------------------' `---------------'
      *
-     * NOTE: Key between Space and \ in above diagram is M0110 Enter(assigned to Gui).
+     * NOTE: You can register Esc by hitting(press&release) Fn0 quickly.
+     * NOTE: Gui between Space and \ is Enter on M0110 not exists on M0110A.
      * NOTE: LShift and RShift are logically same key. (M0110, M0110A)
      * NOTE: LOption and ROption are logically same key. (M0110)
      */
-#ifdef HASU
+#ifndef HASU
+    KEYMAP(
+    GRV, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,    LGUI,PEQL,PSLS,PAST,
+    TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,         P7,  P8,  P9,  PMNS,
+    FN0, A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,     ENT,     P4,  P5,  P6,  PPLS,
+    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,          UP,      P1,  P2,  P3,  PENT,
+    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,RGHT,DOWN,    P0,       PDOT
+    ),
+    // HHKB & WASD
+    KEYMAP(
+    ESC, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, DEL,     NLCK,PEQL,PSLS,PAST,
+    CAPS,HOME,UP,  PGUP,NO,  NO,  NO,  NO,  PSCR,SLCK,BRK, UP,  INS,          P7,  P8,  P9,  PMNS,
+    FN0, LEFT,DOWN,RGHT,NO,  NO,  NO,  NO,  HOME,PGUP,LEFT,RGHT,     ENT,     P4,  P5,  P6,  PPLS,
+    LSFT,END, NO,  PGDN,NO,  VOLD,VOLU,MUTE,END, PGDN,DOWN,          UP,      P1,  P2,  P3,  PENT,
+    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,RGHT,DOWN,    P0,       PDOT
+    ),
+#else
+    // hasu's keymap
+    // To enable use this 'make' option: make EXTRAFLAGS=-DHASU
     KEYMAP(
     ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,    ESC, PEQL,PSLS,PAST,
     TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,         P7,  P8,  P9,  PMNS,
     LCTL,A,   S,   D,   F,   G,   H,   J,   K,   L,   FN1, QUOT,     ENT,     P4,  P5,  P6,  PPLS,
-    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, FN2,           UP,      P1,  P2,  P3,  PENT,
-    FN0, LALT,               SPC,                LGUI,BSLS,LEFT,DOWN,RGHT,    P0,       PDOT
+    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, FN2,           FN3,     P1,  P2,  P3,  PENT,
+    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,RGHT,DOWN,    P0,       PDOT
     ),
     // HHKB & WASD
     KEYMAP(
     GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, DEL,     NLCK,PEQL,PSLS,PAST,
     CAPS,HOME,UP,  PGUP,NO,  NO,  NO,  NO,  PSCR,SLCK,BRK, UP,  INS,          P7,  P8,  P9,  PMNS,
     LCTL,LEFT,DOWN,RGHT,NO,  NO,  NO,  NO,  HOME,PGUP,LEFT,RGHT,     ENT,     P4,  P5,  P6,  PPLS,
-    LSFT,END, NO,  PGDN,NO,  VOLD,VOLU,MUTE,END, PGDN,DOWN,          UP,      P1,  P2,  P3,  PENT,
-    FN0, LALT,               SPC,                LGUI,BSLS,LEFT,DOWN,RGHT,    P0,       PDOT
+    LSFT,END, NO,  PGDN,NO,  VOLD,VOLU,MUTE,END, PGDN,DOWN,          FN3,     P1,  P2,  P3,  PENT,
+    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,RGHT,DOWN,    P0,       PDOT
     ),
     // vi mousekeys
     KEYMAP(
@@ -148,7 +168,7 @@ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     CAPS,NO,  NO,  NO,  NO,  NO,  WH_L,WH_D,WH_U,WH_R,NO,  NO,  NO,           P7,  P8,  P9,  PMNS,
     NO,  VOLD,VOLU,MUTE,NO,  NO,  MS_L,MS_D,MS_U,MS_R,FN1, NO,       ENT,     P4,  P5,  P6,  PPLS,
     LSFT,NO,  NO,  NO,  NO,  BTN3,BTN2,BTN1,NO,  NO,  NO,            UP,      P1,  P2,  P3,  PENT,
-    LCTL,LALT,               BTN1,               LGUI,BSLS,LEFT,DOWN,RGHT,    P0,       PDOT
+    LCTL,LALT,               BTN1,               LGUI,BSLS,LEFT,RGHT,DOWN,    P0,       PDOT
     ),
     // vi cusorkeys
     KEYMAP(
@@ -156,23 +176,7 @@ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
     CAPS,NO,  NO,  NO,  NO,  NO,  HOME,PGDN,PGUP,END, NO,  NO,  NO,           P7,  P8,  P9,  PMNS,
     NO,  NO,  NO,  NO,  NO,  NO,  LEFT,DOWN,UP,  RGHT,NO,  NO,       ENT,     P4,  P5,  P6,  PPLS,
     LSFT,NO,  NO,  NO,  NO,  NO,  HOME,PGDN,PGUP,END, FN2,           UP,      P1,  P2,  P3,  PENT,
-    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,DOWN,RGHT,    P0,       PDOT
-    ),
-#else
-    KEYMAP(
-    GRV, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC,    LGUI,PEQL,PSLS,PAST,
-    TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,         P7,  P8,  P9,  PMNS,
-    FN0, A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,     ENT,     P4,  P5,  P6,  PPLS,
-    LSFT,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,          UP,      P1,  P2,  P3,  PENT,
-    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,DOWN,RGHT,    P0,       PDOT
-    ),
-    // HHKB & WASD
-    KEYMAP(
-    ESC, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, DEL,     NLCK,PEQL,PSLS,PAST,
-    CAPS,HOME,UP,  PGUP,NO,  NO,  NO,  NO,  PSCR,SLCK,BRK, UP,  INS,          P7,  P8,  P9,  PMNS,
-    FN0, LEFT,DOWN,RGHT,NO,  NO,  NO,  NO,  HOME,PGUP,LEFT,RGHT,     ENT,     P4,  P5,  P6,  PPLS,
-    LSFT,END, NO,  PGDN,NO,  VOLD,VOLU,MUTE,END, PGDN,DOWN,          UP,      P1,  P2,  P3,  PENT,
-    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,DOWN,RGHT,    P0,       PDOT
+    LCTL,LALT,               SPC,                LGUI,BSLS,LEFT,RGHT,DOWN,    P0,       PDOT
     ),
 #endif
 };
diff --git a/m0110_usb/matrix.c b/m0110_usb/matrix.c
index 11303ee0fd..b28045b9c1 100644
--- a/m0110_usb/matrix.c
+++ b/m0110_usb/matrix.c
@@ -32,10 +32,15 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 #define CAPS        0x39
-#define CAPS_UP     (CAPS | 0x80)
+#define CAPS_BREAK  (CAPS | 0x80)
 #define ROW(key)    ((key)>>3&0x0F)
 #define COL(key)    ((key)&0x07)
 
+#define ARROW_UP_BREAK      (0x4D | 0x80)
+#define ARROW_DOWN_BREAK    (0x48 | 0x80)
+#define ARROW_LEFT_BREAK    (0x46 | 0x80)
+#define ARROW_RIGHT_BREAK   (0x42 | 0x80)
+
 
 static bool is_modified = false;
 
@@ -88,14 +93,27 @@ uint8_t matrix_scan(void)
     // Send Caps key up event
     if (matrix_is_on(ROW(CAPS), COL(CAPS))) {
         is_modified = true;
-        register_key(CAPS_UP);
+        register_key(CAPS_BREAK);
     }
 #endif
     if (key == M0110_NULL) {
         return 0;
     } else if (key == M0110_ERROR) {
-        // TODO: error recovery or reinit
         return 0;
+    } else if (key == ARROW_UP_BREAK ||
+               key == ARROW_DOWN_BREAK ||
+               key == ARROW_LEFT_BREAK ||
+               key == ARROW_RIGHT_BREAK) {
+        // WORK AROUND: exceptional handling for M0110A
+        // Unregister both Arrow key and coressponding Calc key when receive Arrow key break.
+        //
+        // Shift + Calc keys(=/*+):
+        //    Send no Shift break(0xF1) when release Calc keys. Can't be desinguished from Arrow keys.
+        //    (press: 0x71, 0x79, 0xXX      release: 0x79, 0xXX)
+        //    See m0110.c for key events and scan codes.
+        is_modified = true;
+        register_key(key);
+        register_key(key|M0110_CALC_OFFSET);
     } else {
 #ifdef MATRIX_HAS_LOCKING_CAPS    
         if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) {
@@ -103,11 +121,11 @@ uint8_t matrix_scan(void)
             // Ignore LockingCaps key down event
             if (key == CAPS) return 0;
             // Convert LockingCaps key up event into down event
-            if (key == CAPS_UP) key = CAPS;
+            if (key == CAPS_BREAK) key = CAPS;
         } else {
             // CAPS LOCK off:
             // Ignore LockingCaps key up event
-            if (key == CAPS_UP) return 0;
+            if (key == CAPS_BREAK) return 0;
         }
 #endif        
         is_modified = true;
diff --git a/rules.mk b/rules.mk
index d575726c71..9143f9bcff 100644
--- a/rules.mk
+++ b/rules.mk
@@ -317,7 +317,7 @@ GENDEPFLAGS = -MMD -MP -MF .dep/$(@F).d
 
 # Combine all necessary flags and optional flags.
 # Add target processor to flags.
-# You can give EXTRAFLAGS at 'make' command line.
+# You can give extra flags at 'make' command line like: make EXTRAFLAGS=-DFOO=bar
 ALL_CFLAGS = -mmcu=$(MCU) -I. $(CFLAGS) $(GENDEPFLAGS) $(EXTRAFLAGS)
 ALL_CPPFLAGS = -mmcu=$(MCU) -I. -x c++ $(CPPFLAGS) $(GENDEPFLAGS) $(EXTRAFLAGS)
 ALL_ASFLAGS = -mmcu=$(MCU) -I. -x assembler-with-cpp $(ASFLAGS) $(EXTRAFLAGS)