diff --git a/boot-programs/devices.hhp b/boot-programs/devices.hhp
new file mode 100644
index 0000000..b4bcda7
--- /dev/null
+++ b/boot-programs/devices.hhp
@@ -0,0 +1,9 @@
+#pypp 0
+#ifndef __IRIS_DEVICES_HH
+#define __IRIS_DEVICES_HH
+
+// lcd driver.
+#define LCD_BACKLIGHT 1
+#define LCD_RESET 2
+
+#endif
diff --git a/boot-programs/lcd.ccp b/boot-programs/lcd.ccp
index 19ed173..2e08030 100644
--- a/boot-programs/lcd.ccp
+++ b/boot-programs/lcd.ccp
@@ -85,11 +85,8 @@ static void lcd_disable ():
 	set_backlight (0)
 
 static void reset ():
-	// Use gpio pins as pwm.
-	GPIO_GPAUR (2) = (GPIO_GPAUR (2) & ~0x0fffffff) | 0x50000000
-	// Use gpio pins as lcd master.
-	GPIO_GPALR (1) = (GPIO_GPALR (1) & ~0x0000ffff) | 0x55550000
-	GPIO_GPAUR (1) = 0x556a5555
+	gpio_as_pwm ()
+	gpio_as_lcd_master ()
 
 	// initialize things.
 	GPIO_GPIER (2) &= ~(PWM_ENABLE | LCD_RET | SPEN | SPCK | SPDA)
@@ -126,12 +123,6 @@ static void reset ():
 	CPM_MSCR &= ~(1 << 7)
 	mdelay (1)
 
-static void map_io (unsigned physical, unsigned address):
-	Capability page = memory_create_page (__my_memory)
-	alloc_physical (page, physical, 0)
-	memory_map (__my_memory, page, address, 1)
-	//drop (page)
-
 int main ():
 	map_gpio ()
 	map_pwm0 ()
@@ -140,6 +131,13 @@ int main ():
 
 	reset ()
 
+	while true:
+		for unsigned i = 0; i <= 300; i += 30:
+			set_backlight (i)
+			kdebug (0)
+			mdelay (50)
+			schedule ()
+
 	while true:
 		Message msg
 		if !wait (&msg):
diff --git a/invoke.ccp b/invoke.ccp
index de314a0..4de920b 100644
--- a/invoke.ccp
+++ b/invoke.ccp
@@ -222,7 +222,6 @@ static void memory_invoke (unsigned target, unsigned protected_data, Capability:
 						reply_num (0)
 					break
 				case CAPTYPE_PAGE:
-					dbg_send (1, 3)
 					Page *ret = mem->alloc_page ()
 					if ret:
 						reply_cap (CAPTYPE_PAGE | (rights & CAP_PAGE_ALL_RIGHTS), (unsigned)ret)
@@ -268,7 +267,6 @@ static void memory_invoke (unsigned target, unsigned protected_data, Capability:
 			// TODO
 			break
 		case CAP_MEMORY_MAP:
-			dbg_send (3, 3)
 			// FIXME: this should work for fake pages as well.
 			if !c->cap[0] || (unsigned)c->cap[0]->target & ~KERNEL_MASK || ((unsigned)c->cap[0]->target & CAPTYPE_MASK) != CAPTYPE_PAGE:
 				break
@@ -364,7 +362,6 @@ static void thread_invoke (unsigned target, unsigned protected_data, Capability:
 			reply_cap (CAPTYPE_THREAD | (c->data[1] & CAP_THREAD_ALL_PRIV_RIGHTS), c->cap[0]->protected_data)
 			break
 		case CAP_THREAD_ALLOC_PHYSICAL:
-			dbg_send (2, 3)
 			// Threads with access to this call are trusted, so no sanity checking is done.
 			Page *page = (Page *)c->cap[0]->protected_data
 			page->forget ()
diff --git a/mips/Makefile.arch b/mips/Makefile.arch
index ad34a16..df779fe 100644
--- a/mips/Makefile.arch
+++ b/mips/Makefile.arch
@@ -35,7 +35,7 @@ uimage:
 mips/entry.o: $(boot_threads)
 mips/init.o: TARGET_FLAGS = -I/usr/include
 $(boot_threads): TARGET_FLAGS = -I.
-$(boot_threads): boot-programs/jz4730.hh
+$(boot_threads): boot-programs/jz4730.hh boot-programs/devices.hh
 
 # Transform ':' into ';' so vim doesn't think there are errors.
 uimage: kernel.raw.gz Makefile mips/Makefile.arch
diff --git a/mips/entry.S b/mips/entry.S
index 319908d..d290688 100644
--- a/mips/entry.S
+++ b/mips/entry.S
@@ -222,8 +222,8 @@ save_regs:
 	.globl thread2
 	.balign 0x1000
 thread0:
-	.incbin "keyboard"
+	.incbin "lcd"
 	.balign 0x1000
 thread1:
-	.incbin "lcd"
+	.incbin "keyboard"
 thread2: