diff --git a/include/keypad.h b/include/keypad.h
index 3dbebdf..5263a0d 100644
--- a/include/keypad.h
+++ b/include/keypad.h
@@ -28,6 +28,7 @@
  * Starts a task to poll the buttons. Must be called before any keypad reading.
  */
 void keypad_init(void);
+void keypad_start(void);
 
 /**
  * Reads the last pressed key on the keypad.
diff --git a/libinterp.a b/libinterp.a
index c135dfc..f009932 100644
Binary files a/libinterp.a and b/libinterp.a differ
diff --git a/link.ld b/link.ld
index be1c523..b7adb78 100644
--- a/link.ld
+++ b/link.ld
@@ -35,31 +35,45 @@ SECTIONS {
 		. = ALIGN(8);
 	} > FLASH
 
-	/* code sections */
+	/* other code sections */
 	.text : {
 		. = ALIGN(8);
 		*(.text)
+		*(.text*)
+
+		*(.init)
+		*(.fini)
 		. = ALIGN(8);
 	} > FLASH
 
-	/* readonly data */
+	/* read-only data sections */
 	.rodata : {
 		. = ALIGN(8);
 		*(.rodata)
+		*(.rodata*)
+
+		*(.eh_frame)
 		. = ALIGN(8);
 	} > FLASH
 
+	/* ARM stuff */
+	.ARM.exidx : {
+		*(.ARM.exidx)
+	} > FLASH
+
 	/* init_array/fini_array (TODO understand this) */
 	.init_array : {
-		PROVIDE_HIDDEN(__init_array_start = .);
-		KEEP(*(.init_array))
-		PROVIDE_HIDDEN(__init_array_end = .);
+		__init_array_start = .;
+		KEEP(*(SORT(.init_array.*)))
+		KEEP(*(.init_array*))
+		__init_array_end = .;
 	} > FLASH
 
 	.fini_array : {
-		PROVIDE_HIDDEN(__fini_array_start = .);
-		KEEP(*(.fini_array))
-		PROVIDE_HIDDEN(__fini_array_end = .);
+		__fini_array_start = .;
+		KEEP(*(SORT(.fini_array.*)))
+		KEEP(*(.fini_array*))
+		__fini_array_end = .;
 	} > FLASH
 
 	/* initialized data */
@@ -74,9 +88,10 @@ SECTIONS {
 
 	/* uninitialized data */
 	.bss : {
-		. = ALIGN(8);
+		. = ALIGN(4);
 		__bss_start__ = .;
 		*(.bss)
+		. = ALIGN(4);
 		__bss_end__ = .;
 	} > RAM
 }
diff --git a/src/keypad.c b/src/keypad.c
index 06cef51..20a67c2 100644
--- a/src/keypad.c
+++ b/src/keypad.c
@@ -49,12 +49,12 @@ static const port_t keypad_cols[COLS] = {
 	{ COL_0 }, { COL_1 }, { COL_2 }, { COL_3 }, { COL_4 }
 };
 
-static const int keypad_map[ROWS][COLS] = {
-	{ '7', '8', '9',  'x',  '/' },
-	{ '4', '5', '6',  'y',  '*' },
-	{ '3', '2', '1',  'z',  '-' },
-	{ '.', '0', '\b', '\n', '+' }
-};
+//static const int keypad_map[ROWS][COLS] = {
+//	{ '7', '8', '9',  'x',  '/' },
+//	{ '4', '5', '6',  'y',  '*' },
+//	{ '3', '2', '1',  'z',  '-' },
+//	{ '.', '0', '\b', '\n', '+' }
+//};
 
 #define BUFFER_SIZE 8
 static char keypad_buffer = 'A';//[BUFFER_SIZE];
@@ -62,22 +62,22 @@ static char keypad_buffer = 'A';//[BUFFER_SIZE];
 
 void keypad_task(void)
 {
-	unsigned int col = 0;
+	//unsigned int col = 0;
 	while (1) {
-		gpio_dout(keypad_cols[col].port, keypad_cols[col].pin, 1);
-		for (unsigned int row = 0; row < ROWS; row++) {
-			if (gpio_din(keypad_rows[row].port, keypad_rows[row].pin)) {
-				//if (keypad_buffer_pos < BUFFER_SIZE)
-					keypad_buffer/*[++keypad_buffer_pos]*/ = keypad_map[row][col];
-				while (gpio_din(keypad_rows[row].port, keypad_rows[row].pin))
-					delay(1);
-				break;
-			}
-		}
-		gpio_dout(keypad_cols[col].port, keypad_cols[col].pin, 0);
-		col++;
-		if (col == COLS)
-			col = 0;
+	//	gpio_dout(keypad_cols[col].port, keypad_cols[col].pin, 1);
+	//	for (unsigned int row = 0; row < ROWS; row++) {
+	//		if (gpio_din(keypad_rows[row].port, keypad_rows[row].pin)) {
+	//			//if (keypad_buffer_pos < BUFFER_SIZE)
+	//				keypad_buffer/*[++keypad_buffer_pos]*/ = keypad_map[row][col];
+	//			while (gpio_din(keypad_rows[row].port, keypad_rows[row].pin))
+	//				delay(1);
+	//			break;
+	//		}
+	//	}
+	//	gpio_dout(keypad_cols[col].port, keypad_cols[col].pin, 0);
+	//	col++;
+	//	if (col == COLS)
+	//		col = 0;
 
 		delay(10);
 	}
@@ -102,7 +102,10 @@ void keypad_init(void)
 		gpio_speed(p, pin, VERYHIGH);
 		gpio_dout(p, pin, 0);
 	}
+}
 
+void keypad_start(void)
+{
 	task_start(keypad_task, 1024);
 }
 
diff --git a/src/main.c b/src/main.c
index 1e9b58d..65fa1d3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -74,7 +74,7 @@ void kmain(void)
 	dsp_init();
 	dsp_rect(0, 0, LCD_WIDTH, LCD_HEIGHT, dsp_color(0, 0, 0));
 	dsp_cursoron();
-	keypad_init();
+	keypad_start();
 	task_start(task_interpreter, 4096);
 
 	/*char buf[2];