diff --git a/pci/pci.c b/pci/pci.c
index 153ef13..5ccad6f 100644
--- a/pci/pci.c
+++ b/pci/pci.c
@@ -1120,13 +1120,14 @@ void init_xlbus_arbiter(void)
      * M2 = Multichannel DMA
      * M3 = PCI target interface
      */
-
+#if 0
     MCF_XLB_XARB_PRIEN = MCF_XLB_XARB_PRIEN_M0 |    /* activate programmed priority for Coldfire core */
                     MCF_XLB_XARB_PRIEN_M2 |         /* activate programmed priority for Multichannel DMA */
                     MCF_XLB_XARB_PRIEN_M3;          /* activate programmed priority for PCI target interface */
     MCF_XLB_XARB_PRI = MCF_XLB_XARB_PRI_M0P(7) |    /* Coldfire core gets lowest */
                     MCF_XLB_XARB_PRI_M2P(5) |       /* Multichannel DMA mid priority */
                     MCF_XLB_XARB_PRI_M3P(3);        /* PCI target interface is highest priority */
+#endif
 }
 
 void init_pci(void)
diff --git a/radeon/radeon_base.c b/radeon/radeon_base.c
index 6a94b16..226683c 100644
--- a/radeon/radeon_base.c
+++ b/radeon/radeon_base.c
@@ -62,7 +62,7 @@
 #include "bas_string.h"
 #include "exceptions.h"		/* for set_ipl() */
 
-// #define DEBUG
+#define DEBUG
 #include "debug.h"
 
 extern void run_bios(struct radeonfb_info *rinfo);
@@ -918,13 +918,23 @@ int radeonfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 int radeonfb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 {
     struct radeonfb_info *rinfo = info->par;
-    //	DPRINT("radeonfb: radeonfb_pan_display\r\n");
+    dbg("\r\n");
     if ((var->xoffset + var->xres) > var->xres_virtual)
+    {
+        dbg("xoffset = %d, xres = %d, xres_virtual=%d\r\n",
+            var->xoffset, var->xres, var->xres_virtual);
         return -1; //-EINVAL;
+    }
 
     if (((var->yoffset * var->xres_virtual) + var->xoffset) >=
             (rinfo->mapped_vram - (var->yres * var->xres * (var->bits_per_pixel / 8))))
+    {
+        dbg("yoffset=%d, xres_virtual=%d, mapped_vram=%ld,\r\n",
+            "yres=%d, xres=%d, bpp=%d\r\n",
+            var->yoffset, var->xres_virtual, var->xoffset, rinfo->mapped_vram,
+            var->yres, var->xres, var->bits_per_pixel);
         return -1; //-EINVAL;
+    }
 
     if (rinfo->asleep)
         return 0;
@@ -2126,25 +2136,25 @@ static void radeon_identify_vram(struct radeonfb_info *rinfo)
      */
     switch(rinfo->family)
     {
-        case CHIP_FAMILY_LEGACY: dbg("chip type: %s\r\n", "LEGACY"); break;
-        case CHIP_FAMILY_RADEON: dbg("chip type: %s\r\n", "RADEON"); break;
-        case CHIP_FAMILY_RV100: dbg("chip type: %s\r\n", "RV100"); break;
-        case CHIP_FAMILY_RS100: dbg("chip type: %s\r\n", "RS100"); break;
-        case CHIP_FAMILY_RV200: dbg("chip type: %s\r\n", "RV200"); break;
-        case CHIP_FAMILY_RS200: dbg("chip type: %s\r\n", "RS200"); break;
-        case CHIP_FAMILY_R200: dbg("chip type: %s\r\n", "R200"); break;
-        case CHIP_FAMILY_RV250: dbg("chip type: %s\r\n", "RV250"); break;
-        case CHIP_FAMILY_RS300: dbg("chip type: %s\r\n", "RS300"); break;
-        case CHIP_FAMILY_RV280: dbg("chip type: %s\r\n", "RV280"); break;
-        case CHIP_FAMILY_R300: dbg("chip type: %s\r\n", "R300"); break;
-        case CHIP_FAMILY_R350: dbg("chip type: %s\r\n", "R350"); break;
-        case CHIP_FAMILY_RV350: dbg("chip type: %s\r\n", "RV350"); break;
-        case CHIP_FAMILY_RV380: dbg("chip type: %s\r\n", "RV380"); break;
+        case CHIP_FAMILY_LEGACY: inf("chip type: %s\r\n", "LEGACY"); break;
+        case CHIP_FAMILY_RADEON: inf("chip type: %s\r\n", "RADEON"); break;
+        case CHIP_FAMILY_RV100: inf("chip type: %s\r\n", "RV100"); break;
+        case CHIP_FAMILY_RS100: inf("chip type: %s\r\n", "RS100"); break;
+        case CHIP_FAMILY_RV200: inf("chip type: %s\r\n", "RV200"); break;
+        case CHIP_FAMILY_RS200: inf("chip type: %s\r\n", "RS200"); break;
+        case CHIP_FAMILY_R200: inf("chip type: %s\r\n", "R200"); break;
+        case CHIP_FAMILY_RV250: inf("chip type: %s\r\n", "RV250"); break;
+        case CHIP_FAMILY_RS300: inf("chip type: %s\r\n", "RS300"); break;
+        case CHIP_FAMILY_RV280: inf("chip type: %s\r\n", "RV280"); break;
+        case CHIP_FAMILY_R300: inf("chip type: %s\r\n", "R300"); break;
+        case CHIP_FAMILY_R350: inf("chip type: %s\r\n", "R350"); break;
+        case CHIP_FAMILY_RV350: inf("chip type: %s\r\n", "RV350"); break;
+        case CHIP_FAMILY_RV380: inf("chip type: %s\r\n", "RV380"); break;
         case CHIP_FAMILY_R420: dbg("chip type: %s\r\n", "R420"); break;
-        default: dbg("chip type: %s\r\n", "UNKNOW"); break;
+        default: inf("chip type: %s\r\n", "UNKNOW"); break;
     }
     inf("found %d KB of %d bits wide %s video RAM\r\n", rinfo->video_ram / 1024,
-        rinfo->vram_width, rinfo->vram_ddr ? "DDR " : "SDRAM ");
+        rinfo->vram_width, rinfo->vram_ddr ? "DDR" : "SDRAM");
 }
 
 int32_t radeonfb_pci_register(int32_t handle, const struct pci_device_id *ent)
diff --git a/sys/BaS.c b/sys/BaS.c
index a090b78..d532bab 100644
--- a/sys/BaS.c
+++ b/sys/BaS.c
@@ -228,7 +228,7 @@ void enable_coldfire_interrupts()
             MCF_GPT_GMS_IEN |
             MCF_GPT_GMS_TMS(1);             /* route GPT0 interrupt on interrupt controller */
     MCF_INTC_ICR62 = MCF_INTC_ICR_IL(7) |
-                     MCF_INTC_ICR_IP(6);    /* interrupt level 7, interrupt priority 7 */
+                     MCF_INTC_ICR_IP(6);    /* interrupt level 7, interrupt priority 6 */
     MCF_INTC_IMRH = 0xbffffffe;             /* psc3 and timer 0 int on */
 #endif
 #endif
diff --git a/sys/interrupts.c b/sys/interrupts.c
index 8ac5a7d..f33c01b 100644
--- a/sys/interrupts.c
+++ b/sys/interrupts.c
@@ -441,26 +441,26 @@ bool xlbarb_interrupt_handler(void *arg1, void *arg2)
     /*
      * TODO: we should probably issue a bus error when this occors
      */
-    dbg("XLB arbiter interrupt. XARB_ADRCAP=0x%08lx\r\n", MCF_XLB_XARB_ADRCAP);
+    err("XLB arbiter interrupt. XARB_ADRCAP=0x%08lx\r\n", MCF_XLB_XARB_ADRCAP);
 
     if (status & MCF_XLB_XARB_SR_AT)
-        dbg("address tenure timeout\r\n");
+        err("address tenure timeout\r\n");
     if (status & MCF_XLB_XARB_SR_DT)
-        dbg("data tenure timeout\r\n");
+        err("data tenure timeout\r\n");
     if (status & MCF_XLB_XARB_SR_BA)
-        dbg("bus activity tenure timeout\r\n");
+        err("bus activity tenure timeout\r\n");
     if (status & MCF_XLB_XARB_SR_TTM)
-        dbg("TBST/TSIZ mismatch\r\n");
+        err("TBST/TSIZ mismatch\r\n");
     if (status & MCF_XLB_XARB_SR_ECW)
-        dbg("external control word read/write\r\n");
+        err("external control word read/write\r\n");
     if (status & MCF_XLB_XARB_SR_TTR)
-        dbg("TT reserved\r\n");
+        err("TT reserved\r\n");
     if (status & MCF_XLB_XARB_SR_TTA)
-        dbg("TT address only\r\n");
+        err("TT address only\r\n");
     if (status & MCF_XLB_XARB_SR_MM)
-        dbg("multiple masters at priority 0\r\n");
+        err("multiple masters at priority 0\r\n");
     if (status & MCF_XLB_XARB_SR_SEA)
-        dbg("slave error acknowledge\r\n");
+        err("slave error acknowledge\r\n");
 
     /*
      * acknowledge interrupt
diff --git a/video/fbmem.c b/video/fbmem.c
index e888f62..6bb02fc 100644
--- a/video/fbmem.c
+++ b/video/fbmem.c
@@ -19,7 +19,7 @@
 #include "driver_mem.h"
 #include "bas_string.h"
 
-// #define DEBUG
+#define DEBUG
 #include "debug.h"
 
 
@@ -37,9 +37,18 @@ int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var)
     dbg("\r\n");
     if ((xoffset < 0) || (yoffset < 0)
             || ((xoffset + info->var.xres) > info->var.xres_virtual))
+    {
+        dbg("xoffset=%d, yoffset=%d, xres=%d, xres_virtual = %d\r\n",
+            xoffset, yoffset, info->var.xres, info->var.xres_virtual);
         return -1; //-EINVAL;
+    }
+
     if ((err = info->fbops->fb_pan_display(var, info)))
+    {
+        dbg("fb_pan_display returned %d\r\n", err);
         return err;
+    }
+
     info->var.xoffset = var->xoffset;
     info->var.yoffset = var->yoffset;
     if (var->vmode & FB_VMODE_YWRAP)
@@ -53,11 +62,11 @@ int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
 {
     int err;
 
-    dbg("\r\n");
+    dbg("var->activate = 0x%x\r\n", var->activate);
 
     if (var->activate & FB_ACTIVATE_INV_MODE)
     {
-        /* return 1 if equal */
+        dbg("invalid mode\r\n");
         return !memcmp((char *) &info->var, (char *) var, sizeof(struct fb_var_screeninfo));
     }
 
@@ -66,6 +75,7 @@ int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var)
     {
         if ((err = info->fbops->fb_check_var(var, info)))
         {
+            dbg("fb_check_var failed\r\n");
             return err;
         }
 
diff --git a/video/fbmodedb.c b/video/fbmodedb.c
index 66c2e1f..f54c7fc 100644
--- a/video/fbmodedb.c
+++ b/video/fbmodedb.c
@@ -16,7 +16,7 @@
 #include "bas_printf.h"
 #include "bas_string.h"
 
-// #define DEBUG
+#define DEBUG
 #include "debug.h"
 
 #define name_matches(v, s, l) \
diff --git a/video/video.c b/video/video.c
index ae02510..a1068fa 100644
--- a/video/video.c
+++ b/video/video.c
@@ -7,7 +7,7 @@
 #include "fb.h"
 #include "radeonfb.h"
 
-// #define DEBUG
+#define DEBUG
 #include "debug.h"
 
 #ifdef _USE_VIDEL_
@@ -274,40 +274,42 @@ void videl_screen_init(void)
 
 static struct radeonfb_info rfb;
 
+static struct fb_var_screeninfo default_fb =
+{
+    .xres = 1280,
+    .yres = 1024,
+    .xres_virtual = 2560,
+    .yres_virtual = 2048,
+    .xoffset = 0,
+    .yoffset = 0,
+    .bits_per_pixel = 8,
+    .grayscale = 0,
+    .red = { 0, 0, 0 },
+    .green = { 0, 0, 0 },
+    .blue = { 0, 0, 0 },
+    .transp = { 0, 0, 0 },
+    .nonstd = 0,
+    .activate = FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW,
+    .height = 1024,
+    .width = 1280,
+    .accel_flags = 0L,
+    .pixclock = 70 * 100000000L,
+    .left_margin = 0,
+    .right_margin = 0,
+    .upper_margin = 0,
+    .lower_margin = 0,
+    .hsync_len = 0,
+    .vsync_len = 0,
+    .sync = FB_SYNC_HOR_HIGH_ACT,
+    .vmode = FB_VMODE_CONUPDATE,
+    .rotate = 0,
+    .refresh = 60,
+};
+
 static struct fb_info fb =
 {
     .par = &rfb,
-    .var =
-     {
-        .xres = 640,
-        .yres = 480,
-        .xres_virtual = 640,
-        .yres_virtual = 480,
-        .xoffset = 0,
-        .yoffset = 0,
-        .bits_per_pixel = 8,
-        .grayscale = 0,
-        .red = { 0, 0, 0 },
-        .green = { 0, 0, 0 },
-        .blue = { 0, 0, 0 },
-        .transp = { 0, 0, 0 },
-        .nonstd = 0,
-        .activate = FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW,
-        .height = 480,
-        .width = 640,
-        .accel_flags = 0L,
-        .pixclock = 0,
-        .left_margin = 0,
-        .right_margin = 0,
-        .upper_margin = 0,
-        .lower_margin = 0,
-        .hsync_len = 0,
-        .vsync_len = 0,
-        .sync = FB_SYNC_HOR_HIGH_ACT,
-        .vmode = FB_VMODE_CONUPDATE,
-        .rotate = 0,
-        .refresh = 60,
-     },
+
     .fix =
      {
         "ATI Radeon",
@@ -334,8 +336,8 @@ int16_t ignore_edid;
 struct mode_option resolution =
 {
     .used = 1,
-    .width = 640,
-    .height = 480,
+    .width = 1280,
+    .height = 1024,
     .bpp = 8,
     .freq = 60,
     .flags = MODE_VESA_FLAG
@@ -397,7 +399,7 @@ void video_init(void)
 
                     if (radeonfb_pci_register(handle, board) >= 0)
                     {
-                        fb_set_var(info_fb, &info_fb->var);
+                        fb_set_var(info_fb, &default_fb);
                         inf("RADEON video card found and registered\r\n");
                     }
                     else
diff --git a/x86emu/x86biosemu.c b/x86emu/x86biosemu.c
index 30e316c..d2168da 100644
--- a/x86emu/x86biosemu.c
+++ b/x86emu/x86biosemu.c
@@ -10,7 +10,7 @@
 #include "pci_ids.h"
 #include "x86pcibios.h"
 
-#define DEBUG
+// #define DEBUG
 #include "debug.h"
 
 #define USE_SDRAM