diff --git a/CMakeLists.txt b/CMakeLists.txt
index de21d85..187d7c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,6 +77,7 @@ set(ASSETS_fx
   assets-fx/img/opt_gint_cpumem.png
   assets-fx/img/opt_gint_dma.png
   assets-fx/img/opt_gint_drivers.png
+  assets-fx/img/opt_gint_gdb.png
   assets-fx/img/opt_gint_gray.png
   assets-fx/img/opt_gint_keyboard.png
   assets-fx/img/opt_gint_kmalloc.png
@@ -124,7 +125,7 @@ fxconv_declare_assets(${ASSETS_fx} ${ASSETS_cg} WITH_METADATA)
 
 add_executable(gintctl ${SOURCES} ${ASSETS_${FXSDK_PLATFORM}})
 target_compile_options(gintctl PRIVATE
-  -Wall -Wextra -Os)
+  -Wall -Wextra -Os -g)
 target_link_options(gintctl PRIVATE
   -Wl,-Map=map -Wl,--print-memory-usage)
 target_include_directories(gintctl PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/include")
diff --git a/assets-fx/img/opt_gint_gdb.png b/assets-fx/img/opt_gint_gdb.png
new file mode 100644
index 0000000..50ebd28
Binary files /dev/null and b/assets-fx/img/opt_gint_gdb.png differ
diff --git a/include/gintctl/assets.h b/include/gintctl/assets.h
index be3a7ea..d33ac73 100644
--- a/include/gintctl/assets.h
+++ b/include/gintctl/assets.h
@@ -28,6 +28,7 @@ extern bopti_image_t
 	img_opt_gint_bopti,
 	img_opt_gint_cpumem,
 	img_opt_gint_drivers,
+	img_opt_gint_gdb,
 	img_opt_gint_gray,
 	img_opt_gint_keyboard,
 	img_opt_gint_kmalloc,
diff --git a/src/gint/gdb.c b/src/gint/gdb.c
index 04ec59a..cb748cd 100644
--- a/src/gint/gdb.c
+++ b/src/gint/gdb.c
@@ -3,6 +3,7 @@
 #include <gint/mpu/power.h>
 #include <gint/mpu/ubc.h>
 #include <gint/ubc.h>
+#include <gint/config.h>
 
 #include <gintctl/assets.h>
 #include <gintctl/gint.h>
@@ -11,14 +12,16 @@
 #ifdef FXCG50
 static void val(int y, const char *name, uint32_t value)
 {
-	dtext(0, 20 + y*12, C_BLACK, name);
-	dprint(88, 20 + y*12, C_BLACK, "%08X", value);
+	dtext(4, 20 + y*12, C_BLACK, name);
+	dprint(92, 20 + y*12, C_BLACK, "%08X", value);
 }
 #else
 static void val(int y, const char *name, uint32_t value)
 {
-	dtext(0, 8 + y*6, C_BLACK, name);
-	dprint(40, 8 + y*6, C_BLACK, "%08X", value);
+	int px = 64 * (y / 8);
+	int py = 8 + 6 * (y % 8);
+	dtext(px, py, C_BLACK, name);
+	dprint(px+30, py, C_BLACK, "%08X", value);
 }
 #endif
 
@@ -32,48 +35,49 @@ void gintctl_gint_gdb(void)
 {
 	int key = 0;
 	int ret = -1;
+
+	gdb_start_on_exception();
+
 	while (key != KEY_EXIT) {
 		dclear(C_WHITE);
-#ifdef FXCG50
-		row_title("GDB remote serial protocol");
-#else
-		row_title("GDB");
-#endif
+		row_title(GINT_HW_SWITCH("GDB", "GDB remote serial protocol"));
 
-#ifdef FXCG50
+#if GINT_RENDER_MONO
+		dimage(0, 56, &img_opt_gint_gdb);
+#elif GINT_RENDER_RGB
 		fkey_action(6, "START");
 		fkey_action(5, "PANICR");
 		fkey_action(4, "PANICW");
+		fkey_action(3, "STOP");
 		fkey_action(1, "BANK 1");
 #endif
 
-#ifdef FX9860G
-		font_t const *old_font = dfont(&font_mini);
-#endif
-		val(0, "ret", ret);
-		reg(1, "MSTPCR0", SH7305_POWER.MSTPCR0);
-		reg(2, "CBR0", SH7305_UBC.CBR0);
-		reg(3, "CRR0", SH7305_UBC.CRR0);
-		val(4, "CAR0", SH7305_UBC.CAR0);
-		val(5, "CAMR0", SH7305_UBC.CAMR0);
-		reg(6, "CBR1", SH7305_UBC.CBR1);
-		reg(7, "CRR1", SH7305_UBC.CRR1);
-		val(8, "CAR1", SH7305_UBC.CAR1);
-		val(9, "CAMR1", SH7305_UBC.CAMR1);
-		val(10, "CDR1", SH7305_UBC.CDR1);
-		val(11, "CDMR1", SH7305_UBC.CDMR1);
-		reg(12, "CETR1", SH7305_UBC.CETR1);
-		reg(13, "CCMFR", SH7305_UBC.CCMFR);
-		reg(14, "CBCR", SH7305_UBC.CBCR);
-		val(15, "DBR", (uint32_t) ubc_getDBR());
+		font_t const *old_font = dfont(_(&font_mini, dfont_default()));
+		reg(0, _("MSTP...", "MSTPCR0"), SH7305_POWER.MSTPCR0);
+		reg(1, "CBR0", SH7305_UBC.CBR0);
+		reg(2, "CRR0", SH7305_UBC.CRR0);
+		val(3, "CAR0", SH7305_UBC.CAR0);
+		val(4, "CAMR0", SH7305_UBC.CAMR0);
+		reg(5, "CBR1", SH7305_UBC.CBR1);
+		reg(6, "CRR1", SH7305_UBC.CRR1);
+		val(7, "CAR1", SH7305_UBC.CAR1);
+		val(8, "CAMR1", SH7305_UBC.CAMR1);
+		val(9, "CDR1", SH7305_UBC.CDR1);
+		val(10, "CDMR1", SH7305_UBC.CDMR1);
+		reg(11, "CETR1", SH7305_UBC.CETR1);
+		reg(12, "CCMFR", SH7305_UBC.CCMFR);
+		reg(13, "CBCR", SH7305_UBC.CBCR);
+		val(14, "DBR", (uint32_t) ubc_getDBR());
 
+#ifdef FX9860G
+		val(15, "ret", ret);
+#endif
 #ifdef FXCG50
-		dprint(176, 20, C_BLACK, "exc_catcher: %p", gint_exc_catcher);
+		dprint(176, 20, C_BLACK, "ret: %d", ret);
+		dprint(176, 32, C_BLACK, "exc_catcher: %p", gint_exc_catcher);
 #endif
 
-#ifdef FX9860G
 		dfont(old_font);
-#endif
 		dupdate();
 
 		key_event_t ev = gintctl_getkey();
@@ -82,10 +86,13 @@ void gintctl_gint_gdb(void)
 		volatile uint32_t* miss = (void*)0x41414140;
 		if (key == KEY_F6) {
 			ret = gdb_start();
+			gdb_main(NULL);
 		} else if (key == KEY_F5) {
 			ret = *miss;
 		} else if (key == KEY_F4) {
 			*miss = 0x1337;
+		} else if (key == KEY_F3) {
+			__asm__("trapa #42");
 		} else if (key == KEY_F1) {
 			ret = gintctl_gint_gdb_bank1_test();
 		}
diff --git a/src/gint/render.c b/src/gint/render.c
index a3cda2e..c3fefaf 100644
--- a/src/gint/render.c
+++ b/src/gint/render.c
@@ -1,6 +1,8 @@
 #define __BSD_VISIBLE 1
 #include <gint/display.h>
 #include <gint/keyboard.h>
+#include <gint/config.h>
+#include <gint/video.h>
 #include <gintctl/util.h>
 #include <math.h>
 
@@ -29,7 +31,7 @@ void gintctl_gint_render(void)
 	dclear(C_WHITE);
 	drect_border(1, 1, DWIDTH-2, DHEIGHT-2, C_NONE, 1, C_BLACK);
 
-#ifdef FXCG50
+#if GINT_RENDER_RGB
 	drect_border(3, 3, DWIDTH-4, DHEIGHT-4, C_NONE, 1, C_BLACK);
 #endif
 
@@ -79,6 +81,12 @@ void gintctl_gint_render(void)
 	dcircle(x4+w1/2, y3, r, fill2, C_NONE);
 
 	dupdate();
+
+#if GINT_HW_CG
+	extern image_t gint_gdb_icons_rgb565;
+	video_update(0, 0, &gint_gdb_icons_rgb565, 0);
+#endif
+
 	if(getkey().key == KEY_EXIT)
 		return;
 }
diff --git a/src/gintctl.c b/src/gintctl.c
index f60a5a6..3a3b67c 100644
--- a/src/gintctl.c
+++ b/src/gintctl.c
@@ -61,7 +61,7 @@ struct menu menu_gint = {
 	#if GINT_RENDER_MONO
 	{ "Gray rendering",     gintctl_gint_grayrender, 0 },
 	#endif
-	{ "GDB",                gintctl_gint_gdb, 0},
+	{ "GDB",                gintctl_gint_gdb, MENU_SH4_ONLY },
 	{ NULL, NULL, 0 },
 }};