diff --git a/boot-programs/buzzer.ccp b/boot-programs/buzzer.ccp
index 28ed54a..d7dd37c 100644
--- a/boot-programs/buzzer.ccp
+++ b/boot-programs/buzzer.ccp
@@ -28,8 +28,7 @@ class DevBuzzer:
 	DevBuzzer ():
 		is_beeping = false
 		tcu_stop_counter (pwm)
-		//tcu_select_extalclk (pwm)
-		tcu_select_pclk (pwm)
+		tcu_select_extalclk (pwm)
 		tcu_select_clk_div64 (pwm)
 		tcu_enable_pwm_output (pwm)
 	void stop ():
diff --git a/boot-programs/lcd.ccp b/boot-programs/lcd.ccp
index 1314b2e..092fb9a 100644
--- a/boot-programs/lcd.ccp
+++ b/boot-programs/lcd.ccp
@@ -121,7 +121,7 @@ static void reset ():
 	#elif defined (NANONOTE)
 	// Note that the sync pulse is part of the pre-display region.
 	// Horizontal timings.
-	unsigned hsync = 1, hpre = 141, hpost = 273
+	unsigned hsync = 1, hpre = 70, hpost = 273
 	// Vertical timings.
 	unsigned vsync = 1, vpre = 21, vpost = 2
 	// 3 clocks per pixel.
@@ -129,7 +129,7 @@ static void reset ():
 	// Bits per pixel.
 	unsigned bpp = LCD_CTRL_BPP_18_24
 	// Configuration.
-	unsigned cfg = LCD_CFG_MODE_SERIAL_TFT | LCD_CFG_HSP | LCD_CFG_VSP
+	unsigned cfg = LCD_CFG_MODE_SERIAL_TFT | LCD_CFG_HSP | LCD_CFG_VSP | LCD_CFG_PCP
 	// Set up SPI pins.
 	gpio_as_output (SP_PORT, (1 << SPEN) | (1 << SPCK) | (1 << SPDA))
 	gpio_set (SP_PORT, (1 << SPEN) | (1 << SPCK))
@@ -139,7 +139,7 @@ static void reset ():
 
 	// Note that the sync pulse is part of the pre-display region.
 	unsigned vpe = vsync, vds = vpre, vde = vds + v, vt = vde + vpost
-	unsigned hpe = hsync, hds = hpre, hde = hds + cpp * h, ht = hde + hpost
+	unsigned hpe = hsync, hds = hpre, hde = hds + h, ht = hde + hpost
 
 	cpm_stop_lcd ()
 
@@ -156,17 +156,11 @@ static void reset ():
 	CPM_CFCR |= CPM_CFCR_UPE
 	#elif defined (NANONOTE)
 	unsigned val = cpm_get_pllout2 () / pixclock - 1
-	kdebug ("clock: ")
-	kdebug_num (val)
-	kdebug ("\n")
 	//assert (val < 0x400)
 	//cpm_set_pixdiv (val)
 	//cpm_set_pixdiv (12)
 
 	val = cpm_get_pllout2 () / (pixclock * 3) - 1
-	kdebug ("clock: ")
-	kdebug_num (val)
-	kdebug ("\n")
 	assert (val < 0x20)
 	//cpm_set_ldiv (val)
 	// Update dividers.
@@ -179,7 +173,7 @@ static void reset ():
 
 	#ifdef NANONOTE
 	// Reset the controller.
-	//write_reg (BACKLIGHT1, 0x1e)
+	write_reg (BACKLIGHT1, 0x1e)
 	// Enable display.
 	write_reg (BACKLIGHT1, 0x5f)
 	// Set data to rgbrgbrgb input, with a delta color filter.
@@ -252,6 +246,15 @@ enum captype:
 	#endif
 	SET_EOF_CB
 
+static unsigned spot (unsigned x, unsigned y, unsigned cx, unsigned cy):
+	unsigned dx2 = (x - cx) * (x - cx)
+	unsigned dy2 = (y - cy) * (y - cy)
+	unsigned d2 = dx2 + dy2
+	unsigned l = 120
+	if d2 >= l * l:
+		return 0
+	return ((l * l - d2 - 1) << 8) / (l * l)
+
 Kernel::Num start ():
 	map_lcd ()
 	map_cpm ()
@@ -265,21 +268,18 @@ Kernel::Num start ():
 	assert (physical & PAGE_MASK && ~physical)
 	for unsigned i = 0; i < pages; ++i:
 		Kernel::Page p = Kernel::my_memory.create_page ()
-		p.alloc_physical (physical + i * PAGE_SIZE, false, true)
-		Kernel::my_memory.map (p, (unsigned)LCD_FRAMEBUFFER_BASE + i * PAGE_SIZE)
+		p.alloc_physical (physical + (i << PAGE_BITS), false, true)
+		Kernel::my_memory.map (p, (unsigned)LCD_FRAMEBUFFER_BASE + (i << PAGE_BITS))
 		Kernel::free_cap (p)
 	for unsigned y = 0; y < v; ++y:
-		unsigned g = (y << 8) / v
 		for unsigned x = 0; x < h; ++x:
-			unsigned r = (x << 8) / h
-			unsigned b = ((x + y) << 8) / (h + v)
+			unsigned r = spot (x, y, 100, 160)
+			unsigned g = spot (x, y, 160, 60)
+			unsigned b = spot (x, y, 220, 160)
 			#if defined (TRENDTAC)
 			LCD_FRAMEBUFFER_BASE[y * h + x] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3)
 			#elif defined (NANONOTE)
-			LCD_FRAMEBUFFER_BASE[(y * h + x) * Bpp + 3] = 0
-			LCD_FRAMEBUFFER_BASE[(y * h + x) * Bpp + 2] = r
-			LCD_FRAMEBUFFER_BASE[(y * h + x) * Bpp + 1] = g
-			LCD_FRAMEBUFFER_BASE[(y * h + x) * Bpp + 0] = b
+			LCD_FRAMEBUFFER_BASE[y * h + x] = (r << 16) | (g << 8) | b
 			#else
 			#error "Define your framebuffer format."
 			#endif
diff --git a/invoke.ccp b/invoke.ccp
index e141031..459fbb2 100644
--- a/invoke.ccp
+++ b/invoke.ccp
@@ -739,7 +739,6 @@ static void caps_invoke (unsigned cmd, unsigned target, Kernel::Num protected_da
 			if c->data[1].l >= caps->size:
 				dpanic (0, "invalid caps for print")
 				return
-			dbg_code.h = (unsigned)caps->cap (c->data[1].l)
 			kCapRef cap (caps, c->data[1].l)
 			kCapRef orig (caps, c->data[1].l)
 			while cap->parent.valid ():
diff --git a/iris.hhp b/iris.hhp
index f1ea109..dc8df02 100644
--- a/iris.hhp
+++ b/iris.hhp
@@ -487,7 +487,7 @@ namespace Kernel:
 		my_thread.call (CAP_MASTER_DIRECT | Thread::DBG_SEND, Num (code, bits))
 	inline void reboot ():
 		my_thread.call (CAP_MASTER_DIRECT | Thread::PRIV_REBOOT)
-	inline void kernel_panic (unsigned code):
+	inline void panic (unsigned code):
 		my_thread.call (CAP_MASTER_DIRECT | Thread::PRIV_PANIC, code)
 
 	void Receiver::sleep (unsigned value):
diff --git a/memory.ccp b/memory.ccp
index 492a884..f2d61c7 100644
--- a/memory.ccp
+++ b/memory.ccp
@@ -4,6 +4,7 @@
 extern unsigned _end
 
 static void clear_page (unsigned page, unsigned num = 1):
+	page = (page & ~0xc0000000) | 0xa0000000
 	for unsigned i = 0; i < (num << (PAGE_BITS - 2)); ++i:
 		((unsigned *)page)[i] = 0
 	if *((unsigned *)page) != 0 || ((unsigned *)page)[(num << (PAGE_BITS - 2)) - 1] != 0:
@@ -51,6 +52,11 @@ unsigned init_memory (unsigned mem):
 	first_free->prev = NULL
 	first_free->next = NULL
 	first_free->num = ((mem & PAGE_MASK) - ((unsigned)first_free & ~0xc0000000)) >> PAGE_BITS
+	//dbg_log ("initial memory: ")
+	//dbg_log_num ((unsigned)first_free & ~0xc0000000)
+	//dbg_log ("+")
+	//dbg_log_num (first_free->num)
+	//dbg_log ("\n")
 	return first_free->num
 
 unsigned phys_alloc (unsigned num):
@@ -68,6 +74,11 @@ unsigned phys_alloc (unsigned num):
 			if p->next:
 				p->next->prev = p->prev
 			clear_page ((unsigned)p, num)
+			//dbg_log ("allocating ")
+			//dbg_log_num ((unsigned)p & ~0xc0000000)
+			//dbg_log ("+")
+			//dbg_log_num (num << PAGE_BITS)
+			//dbg_log ("\n")
 			return (unsigned)p
 		choice = p
 	if !choice:
@@ -77,9 +88,19 @@ unsigned phys_alloc (unsigned num):
 	choice->num -= num
 	unsigned ret = (unsigned)choice + (choice->num << PAGE_BITS)
 	clear_page (ret, num)
+	//dbg_log ("allocating ")
+	//dbg_log_num (ret & ~0xc0000000)
+	//dbg_log ("+")
+	//dbg_log_num (num << PAGE_BITS)
+	//dbg_log ("\n")
 	return ret
 
 void phys_free (unsigned page, unsigned num):
+	//dbg_log ("free ")
+	//dbg_log_num (page & ~0xc0000000)
+	//dbg_log ("+")
+	//dbg_log_num (num)
+	//dbg_log ("\n")
 	unsigned size = num << PAGE_BITS
 	if !first_free || (unsigned)first_free > page:
 		// This is the first free block.
diff --git a/mips/init.ccp b/mips/init.ccp
index 2703e1c..59b0131 100644
--- a/mips/init.ccp
+++ b/mips/init.ccp
@@ -232,7 +232,8 @@ static void init_threads ():
 // Initialize the kernel, finish by falling into the idle task.
 void init (unsigned mem):
 	#ifndef NDEBUG
-	dbg_code = 0
+	// Initialize board-specific things.
+	board_init ()
 	#endif
 	must_wait = false
 	// Initialize kernel variables to empty.
@@ -266,8 +267,7 @@ void init (unsigned mem):
 	for unsigned i = 0; i < 32; ++i:
 		arch_interrupt_receiver[i] = NULL
 
-	// Initialize board-specific things.
-	board_init ()
+	// Enable timer interrupts.
 	intc_unmask_irq (TIMER_INTERRUPT)
 
 	// Say we're handling an exception.  Since we're going to enter the idle task, allow access to cp0.
diff --git a/mips/interrupts.ccp b/mips/interrupts.ccp
index eaac778..4d333e1 100644
--- a/mips/interrupts.ccp
+++ b/mips/interrupts.ccp
@@ -251,6 +251,7 @@ kThread *exception ():
 			break
 		case 23:
 			// Reference to WatchHi/WatchLo address.
+			cp0_set0 (CP0_WATCH_LO)
 			current->raise (Kernel::ERR_WATCHPOINT, 0)
 			break
 		case 24:
diff --git a/mips/nanonote/board.ccp b/mips/nanonote/board.ccp
index 6dfe97d..c62bd1e 100644
--- a/mips/nanonote/board.ccp
+++ b/mips/nanonote/board.ccp
@@ -21,28 +21,31 @@
 #include "kernel.hh"
 
 void board_init ():
-	unsigned cpm_uhccdr = CPM_UHCCDR
-	unsigned cpm_cpccr = CPM_CPCCR
-	unsigned cpm_cppcr = CPM_CPPCR
 	pll_init ()
 	cpm_stop_all ()
+	#ifndef NDEBUG
 	cpm_start_uart0 ()
-	cpm_start_tcu ()
-	cpm_start_lcd ()
 	gpio_as_uart0 ()
+	#endif
+	// Timer interrupts and buzzer.
+	cpm_start_tcu ()
+	// sdram memory.
 	gpio_as_sdram_16bit ()
+	// flash memory.
 	gpio_as_nand ()
+	// sound controller.
 	gpio_as_aic ()
+	// micro-sd controller.
 	gpio_as_msc ()
+	// display.
 	gpio_as_lcd_16bit ()
+	// buzzer.
 	gpio_as_pwm4 ()
 	// Set up memory.
 	setup_sdram ()
 	// Use some gpio pins for lcd.
 	gpio_as_gpio (2, (1 << 21) | (1 << 22) | (1 << 23))
-	gpio_as_gpio (3, 1 << 27)
 	gpio_as_output (2, (1 << 21) | (1 << 22) | (1 << 23))
-	gpio_as_output (3, 1 << 27)
 	// Set up keyboard: this breaks uart receive.
 	gpio_as_gpio (3, 0x05fc0000)
 	// Set up timed interrupts.
@@ -55,6 +58,7 @@ void board_init ():
 	tcu_clear_full_match_flag (0)
 	tcu_unmask_full_match_irq (0)
 	tcu_start_counter (0)
+	#ifndef NDEBUG
 	// Set up uart.
 	UART0_IER = 0
 	UART0_FCR = 0
@@ -68,12 +72,8 @@ void board_init ():
 	UART0_DLLR = uart_div
 	UART0_LCR = UARTLCR_WLEN_8 | UARTLCR_STOP1
 	UART0_FCR = UARTFCR_UUE | UARTFCR_FE | UARTFCR_RFLS | UARTFCR_TFLS
-	dbg_code.l = 1
 	dbg_log ("Serial port initialized\n")
-	dbg_log_num (CPM_CPCCR)
-	dbg_log ("+")
-	dbg_log_num (CPM_CPPCR)
-	dbg_log ("\n")
+	#endif
 
 void arch_reboot ():
 	// Wait for serial port to be done.
diff --git a/mips/nanonote/jz4740.hhp b/mips/nanonote/jz4740.hhp
index e0ae8ba..1032865 100644
--- a/mips/nanonote/jz4740.hhp
+++ b/mips/nanonote/jz4740.hhp
@@ -102,7 +102,7 @@
 #define	ETH_BASE	0x00014000
 
 // Default lcd framebuffer mapping space.
-#define LCD_FRAMEBUFFER_BASE ((unsigned char *)0x00015000)
+#define LCD_FRAMEBUFFER_BASE ((unsigned *)0x00015000)
 
 // Map IO memory (requires a priviledged Kernel::my_thread capability).
 #include <iris.hh>
@@ -2347,9 +2347,10 @@ static void gpio_disable_pull (unsigned p, unsigned pins):
 //**************************************************************************
 static void pll_init ():
 	// The cpu clock frequency
-	//unsigned const cpu_clock = 336000000
-	unsigned const cpu_clock = 210000000
-	unsigned const pixclock = 27000000
+	unsigned const cpu_clock = 336000000
+	//unsigned const cpu_clock = 200000000
+	//unsigned const pixclock = 13500000
+	unsigned const pixclock = 25846153
 	// Configure the pll frequency to cpu_clock.
 	CPM_CPPCR = ((cpu_clock * 2 / JZ_EXTAL - 2) << CPM_CPPCR_PLLM_BIT) | (0 << CPM_CPPCR_PLLN_BIT) | (0 << CPM_CPPCR_PLLOD_BIT) | (0x20 << CPM_CPPCR_PLLST_BIT) | CPM_CPPCR_PLLEN
 	// Set up dividers; see documentation for the meaning of all the values.
@@ -3695,6 +3696,7 @@ static void setup_sdram ():
 	EMC_RTCSR = 0x83
 	EMC_RTCOR = 0x1f
 	#endif
+	#if 0
 	for unsigned i = 0; i < 5; ++i:
 		dbg_log ("memory: ")
 		dbg_log_num (EMC_SMCR (i), 8)
@@ -3705,6 +3707,7 @@ static void setup_sdram ():
 	dbg_log (",")
 	dbg_log_num (EMC_RTCOR, 8)
 	dbg_log ("\n")
+	#endif
 #endif
 
 #endif
diff --git a/panic.ccp b/panic.ccp
index 4d7512f..68be030 100644
--- a/panic.ccp
+++ b/panic.ccp
@@ -21,8 +21,6 @@
 
 #ifdef USE_SERIAL
 void dbg_log_char (unsigned ch):
-	if dbg_code.l == 0:
-		return
 	while !(UART0_LSR & UARTLSR_TDRQ):
 	UART0_TDR = ch
 #else