Index: firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
===================================================================
--- firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c	(Revision 21184)
+++ firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c	(Arbeitskopie)
@@ -91,6 +91,12 @@
 #define R_ENTRY_MODE_SOLID_VERT  0x1038
 #define R_ENTRY_MODE_VIDEO 0x7020
 
+volatile int full_empty = 0;
+void INT_DBOP(void)
+{
+    full_empty = 1;
+    DBOP_CTRL &= ~(1<<11|1<<5|1<<8);
+}
 
 /* Reverse Flag */
 #define R_DISP_CONTROL_NORMAL 0x0004
@@ -121,6 +127,8 @@
     DBOP_CTRL = (1<<18)|(1<<16)|(1<<12)|(8<<0);/* short count,write enable, 16bit write, read-timing =8 */
     DBOP_TIMPOL_01 = 0x6e167;
     DBOP_TIMPOL_23 = 0xa167e06f;
+    
+    VIC_INT_ENABLE |= INTERRUPT_DBOP;
 
     /* TODO: The OF calls some other functions here, but maybe not important */
 }
@@ -139,21 +147,41 @@
     while ((DBOP_STAT & (1<<10)) == 0);
 
     /* Fuze OF has this loop and it seems to help us now also */
-    int delay=8;
-    while(delay--);
+    int x = 0;
+    do {
+        asm volatile ("nop\n");
+    } while (x++ < 8);
 
     DBOP_TIMPOL_23 = 0xa167e06f;
 }
 
 void lcd_write_data(const fb_data* p_bytes, int count)
 {
-    while (count--)
+    /* Interrupts seem to be faster than polling the status register */
+start:
+    full_empty = 0;
+    DBOP_CTRL |= (1<<11|1<<5);
+    while (!full_empty && count--)
     {
         DBOP_DOUT = *p_bytes++;
+    }
+    if (count > 0)
+    {
+    //   yield(); // yield() doesn't seem to make it any slower!
+        goto start;
+    }
+    /* While push fifo is not empty */
+#if 0
+    full_empty = 0;
+    DBOP_CTRL |= (1<<11|1<<8);
+    if (DBOP_STAT & (1<<10))
+        return;
+    while(!full_empty);
+#else
+    /* this is slightly faster */
+    while ((DBOP_STAT & (1<<10)) == 0);
+#endif
 
-        /* Wait for fifo to empty */
-        while ((DBOP_STAT & (1<<10)) == 0);
-    }
 }
 
 static void lcd_write_reg(int reg, int value)
Index: firmware/target/arm/as3525/system-as3525.c
===================================================================
--- firmware/target/arm/as3525/system-as3525.c	(Revision 21184)
+++ firmware/target/arm/as3525/system-as3525.c	(Arbeitskopie)
@@ -85,7 +85,9 @@
     while((status >>= 1))
         irq_no++;
 
+/*
     panicf("Unhandled IRQ %02X: %s", irq_no, irqname[irq_no]);
+*/
 }
 
 struct vec_int_src
@@ -104,6 +106,7 @@
     { INT_SRC_MCI0, INT_MCI0 },
     { INT_SRC_GPIOA, INT_GPIOA, },
     { INT_SRC_GPIOB, INT_GPIOB, },
+    { INT_SRC_DBOP, INT_DBOP, },
 };
 
 static void setup_vic(void)
Index: firmware/target/arm/as3525/sansa-fuze/button-fuze.c
===================================================================
--- firmware/target/arm/as3525/sansa-fuze/button-fuze.c	(Revision 21184)
+++ firmware/target/arm/as3525/sansa-fuze/button-fuze.c	(Arbeitskopie)
@@ -150,7 +150,7 @@
 
 static void button_delay(void)
 {
-    int i = 24;
+    int i = 45;
     while(i--) asm volatile ("nop\n");
 }
 
Index: firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
===================================================================
--- firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c	(Revision 21184)
+++ firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c	(Arbeitskopie)
@@ -39,6 +39,14 @@
 #define R_ENTRY_MODE_HORZ 0x7030
 #define R_ENTRY_MODE_VERT 0x7038
 
+
+volatile int full_empty = 0;
+void INT_DBOP(void)
+{
+    full_empty = 1;
+    DBOP_CTRL &= ~(1<<11|1<<5|1<<8);
+}
+
 static unsigned lcd_yuv_options = 0;
 static bool display_on = false; /* is the display turned on? */
 static bool display_flipped = false;
@@ -59,11 +67,14 @@
     GPIOB_AFSEL = 0xfc;
     GPIOC_AFSEL = 0xff;
 
+
     DBOP_TIMPOL_23 = 0x6000e;
     DBOP_CTRL = 0x51008;
     DBOP_TIMPOL_01 = 0x6e167;
     DBOP_TIMPOL_23 = 0xa167e06f;
 
+    VIC_INT_ENABLE |= INTERRUPT_DBOP;
+
     /* TODO: The OF calls some other functions here, but maybe not important */
 }
 
@@ -93,13 +104,31 @@
 
 void lcd_write_data(const fb_data* p_bytes, int count)
 {
-    while (count--)
+    /* Interrupts seem to be faster than polling the status register */
+start:
+    full_empty = 0;
+    DBOP_CTRL |= (1<<11|1<<5);
+    while (!full_empty && count--)
     {
         DBOP_DOUT = *p_bytes++;
+    }
+    if (count > 0)
+    {
+    //   yield(); // yield() doesn't seem to make it any slower!
+        goto start;
+    }
+    /* While push fifo is not empty */
+#if 0
+    full_empty = 0;
+    DBOP_CTRL |= (1<<11|1<<8);
+    if (DBOP_STAT & (1<<10))
+        return;
+    while(!full_empty);
+#else
+    /* this is slightly faster */
+    while ((DBOP_STAT & (1<<10)) == 0);
+#endif
 
-        /* Wait for fifo to empty */
-        while ((DBOP_STAT & (1<<10)) == 0);
-    }
 }
 
 static void lcd_write_reg(int reg, int value)