diff --git a/include/gint/dma.h b/include/gint/dma.h
index 6e4f978..be8528b 100644
--- a/include/gint/dma.h
+++ b/include/gint/dma.h
@@ -1,13 +1,12 @@
 //---
 //	gint:dma - Direct Memory Access for efficient data transfer
-//
-//	Currently this module is used only to transfer data to the display on
-//	fxcg50, but fast memcpy() is apparently possible as well.
 //---
 
 #ifndef GINT_DMA
 #define GINT_DMA
 
+#ifdef FXCG50
+
 #include <gint/defs/types.h>
 
 /* dma_size_t - Transfer block size */
@@ -94,4 +93,6 @@ void dma_transfer_noint(int channel, dma_size_t size, uint blocks,
    @size     Sie of destination area (32-aligned) */
 void *dma_memset(void *dst, uint32_t pattern, size_t size);
 
+#endif /* FXCG50 */
+
 #endif /* GINT_DMA */
diff --git a/include/gint/hardware.h b/include/gint/hardware.h
index 18d1d1f..0c8b4b6 100644
--- a/include/gint/hardware.h
+++ b/include/gint/hardware.h
@@ -124,7 +124,7 @@ void hw_detect(void);
 **  Direct Memory Access Controller
 */
 
-/* Nothing other than the HW_LOADED bit yet */
+/* Nothing other than the HW_LOADED bit yet. Only valid on fxcg50 */
 
 /*
 **  Timer Unit
diff --git a/make/Makefile b/make/Makefile
index 5edb015..124c0a0 100755
--- a/make/Makefile
+++ b/make/Makefile
@@ -46,8 +46,8 @@ src2obj = $(1:../src/%=src/%).o
 src2dep = $(1:../src/%=src/%).d
 
 # Source files
-prune-fx := -name render-cg -prune
-prune-cg := -name render-fx -prune -o -name gray -prune
+prune-fx := -name render-cg -prune -o -name dma  -prune -o -name r61524 -prune
+prune-cg := -name render-fx -prune -o -name gray -prune -o -name t6k11  -prune
 src      := $(shell find ../src \
                     $(prune-$(CONFIG.TARGET)) \
                     -o -name '*.[csS]' -print)
diff --git a/src/r61524/r61524.c b/src/r61524/r61524.c
index f2cb576..09dcbda 100644
--- a/src/r61524/r61524.c
+++ b/src/r61524/r61524.c
@@ -7,8 +7,6 @@
 #include <gint/drivers.h>
 #include <gint/dma.h>
 
-#ifdef FXCG50
-
 #define DMA SH7305_DMA
 #define POWER SH7305_POWER
 
@@ -309,5 +307,3 @@ gint_driver_t drv_r61524 = {
 };
 
 GINT_DECLARE_DRIVER(5, drv_r61524);
-
-#endif /* FXCG50 */
diff --git a/src/t6k11/t6k11.c b/src/t6k11/t6k11.c
index 1af6eb6..04b81f1 100644
--- a/src/t6k11/t6k11.c
+++ b/src/t6k11/t6k11.c
@@ -11,8 +11,6 @@
 
 #include <gint/syscalls.h>
 
-#ifdef FX9860G
-
 //---
 //	Device specification sheet
 //---
@@ -261,5 +259,3 @@ gint_driver_t drv_t6k11 = {
 };
 
 GINT_DECLARE_DRIVER(5, drv_t6k11);
-
-#endif /* FX9860G */