diff -r -c2 tmk_keyboard-master/converter/adb_usb/keymap.c tmk_keyboard-master-mod/converter/adb_usb/keymap.c
*** tmk_keyboard-master/converter/adb_usb/keymap.c	2012-12-05 02:45:48.000000000 -0600
--- tmk_keyboard-master-mod/converter/adb_usb/keymap.c	2012-12-11 00:23:50.000000000 -0600
***************
*** 41,45 ****
      K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,    K24,               K56,K57,K58,K45, \
      K38,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C,        K7B,     K3E,      K53,K54,K55,     \
!     K36,K3A,K37,        K31,                                 K3B,K3D,K3C,  K52,    K41,K4C  \
  ) { \
      { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
--- 41,45 ----
      K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,    K24,               K56,K57,K58,K45, \
      K38,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C,        K7B,     K3E,      K53,K54,K55,     \
!     K36,K3A,K37,        K31,                    K7C,K7D,     K3B,K3D,K3C,  K52,    K41,K4C  \
  ) { \
      { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \
***************
*** 58,62 ****
      { KC_NO,    KC_##K69, KC_NO,    KC_##K6B, KC_NO,    KC_##K6D, KC_NO,    KC_##K6F }, \
      { KC_NO,    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_NO,    KC_NO,    KC_##K7F }  \
  }
  
--- 58,62 ----
      { KC_NO,    KC_##K69, KC_NO,    KC_##K6B, KC_NO,    KC_##K6D, KC_NO,    KC_##K6F }, \
      { KC_NO,    KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76, KC_##K77 }, \
!     { KC_##K78, KC_##K79, KC_##K7A, KC_##K7B, KC_##K7C, KC_##K7D, KC_NO,    KC_##K7F }  \
  }
  
***************
*** 110,114 ****
      CAPS,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,          RSFT,          UP,           P1,  P2,  P3,
!     LCTL,LGUI,LALT,          SPC,                                              LEFT,DOWN,RGHT,    P0,       PDOT,PENT
      ),
  };
--- 110,114 ----
      CAPS,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,          RSFT,          UP,           P1,  P2,  P3,
!     LCTL,LGUI,LALT,          SPC,                               RGUI,RCTL,     LEFT,DOWN,RGHT,    P0,       PDOT,PENT
      ),
  };
diff -r -c2 tmk_keyboard-master/converter/adb_usb/matrix.c tmk_keyboard-master-mod/converter/adb_usb/matrix.c
*** tmk_keyboard-master/converter/adb_usb/matrix.c	2012-12-05 02:45:48.000000000 -0600
--- tmk_keyboard-master-mod/converter/adb_usb/matrix.c	2012-12-11 00:30:14.000000000 -0600
***************
*** 73,76 ****
--- 73,82 ----
      adb_host_init();
  
+     // Enable keyboard left/right modifier distinction
+     // Addr:Keyboard(0010), Cmd:Listen(10), Register3(11)
+     // upper byte: reserved bits 0000, device address 0010
+     // lower byte: device handler 00000011
+     adb_host_listen(0x2B,0x02,0x03);
+     
      // initialize matrix state: all keys off
      for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
diff -r -c2 tmk_keyboard-master/protocol/adb.c tmk_keyboard-master-mod/protocol/adb.c
*** tmk_keyboard-master/protocol/adb.c	2012-12-05 02:45:48.000000000 -0600
--- tmk_keyboard-master-mod/protocol/adb.c	2012-12-11 00:29:30.000000000 -0600
***************
*** 99,115 ****
  }
  
! // send state of LEDs
! void adb_host_kbd_led(uint8_t led)
  {
      attention();
!     send_byte(0x2A);            // Addr:Keyboard(0010), Cmd:Listen(10), Register2(10)
      place_bit0();               // Stopbit(0)
      _delay_us(200);             // Tlt/Stop to Start
      place_bit1();               // Startbit(1)
!     send_byte(0);               // send upper byte (not used)
!     send_byte(led&0x07);        // send lower byte (bit2: ScrollLock, bit1: CapsLock, bit0: NumLock)
      place_bit0();               // Stopbit(0);
  }
  
  
  static inline void data_lo()
--- 99,123 ----
  }
  
! void adb_host_listen(uint8_t cmd, uint8_t data_h, uint8_t data_l)
  {
      attention();
!     send_byte(cmd);
      place_bit0();               // Stopbit(0)
      _delay_us(200);             // Tlt/Stop to Start
      place_bit1();               // Startbit(1)
!     send_byte(data_h); 
!     send_byte(data_l);
      place_bit0();               // Stopbit(0);
  }
  
+ // send state of LEDs
+ void adb_host_kbd_led(uint8_t led)
+ {
+     // Addr:Keyboard(0010), Cmd:Listen(10), Register2(10)
+     // send upper byte (not used)
+     // send lower byte (bit2: ScrollLock, bit1: CapsLock, bit0:
+     adb_host_listen(0x2A,0,led&0x07);
+ }
+ 
  
  static inline void data_lo()
diff -r -c2 tmk_keyboard-master/protocol/adb.h tmk_keyboard-master-mod/protocol/adb.h
*** tmk_keyboard-master/protocol/adb.h	2012-12-05 02:45:48.000000000 -0600
--- tmk_keyboard-master-mod/protocol/adb.h	2012-12-11 00:27:48.000000000 -0600
***************
*** 57,60 ****
--- 57,61 ----
  bool     adb_host_psw(void);
  uint16_t adb_host_kbd_recv(void);
+ void     adb_host_listen(uint8_t cmd, uint8_t data_h, uint8_t data_l);
  void     adb_host_kbd_led(uint8_t led);