Add Mark I layout

keyboards/satan/keymaps/mark1/keymap.c

@@ -0,0 +1,29 @@
+#include "satan.h"
+
+#define KC_____ KC_TRNS
+#define KC_FN MO(1) // Fn
+#define KC_FNLK TG(1) // Fn lock
+#define KC_HOME LCTL(KC_A) // Home, or ctrl-a
+#define KC_END LCTL(KC_E) // End, or ctrl-e
+
+// Mark I keyboard layout for GH60 Satan
+// http://www.keyboard-layout-editor.com/#/gists/e1cde292bd2094cc3b763206d4d2cfb5
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    // 0: qwerty
+    COMPACT_KEYMAP(
+        ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, BSPC, NO,
+        TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS,
+        CAPS,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,NO,  ENT ,
+        LSFT,FN , Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,RSFT,FN  ,
+        LCTL,LALT,LGUI,          SPC,                     RGUI,RALT,RCTL,FNLK
+    ),
+    // 1: fn layer
+    COMPACT_KEYMAP(
+        GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, DEL,____,
+        ____,VOLU,____,____,____,____,____,HOME,UP  ,END ,PGUP,____,____,____,
+        ____,VOLD,MRWD,MPLY,MFFD,____,____,LEFT,DOWN,RGHT,PGDN,____,____,____,
+        ____,____,MUTE,____,____,____,____,____,____,____,SLEP,____,____,____,
+        ____,____,____,          ____,                    ____,____,____,____
+    )
+};

keyboards/satan/keymaps/mark1/readme.md

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+# Mark I layout for GH60 Satan
+
+A Mac keyboard for touch typists who enjoy having a Fn key on both the left-hand and right-hand side.
+
+[Layout](http://www.keyboard-layout-editor.com/#/gists/e1cde292bd2094cc3b763206d4d2cfb5)