diff --git a/src/Makefile.mingw b/src/Makefile.mingw
index 57a504121..8e28cee03 100644
--- a/src/Makefile.mingw
+++ b/src/Makefile.mingw
@@ -22,7 +22,7 @@ PROG	= 86Box
 # Various compile-time options.
 # -DROM_TRACE=0xcd800 traces ROM access from segment C800
 # -DIO_TACE=0x66 traces I/O on port 0x66
-STUFF	=
+STUFF	= -DDEV_BRANCH
 
 # Add feature selections here.
 # -DBUGGER adds the ISA BusBugger emulation.
@@ -105,6 +105,7 @@ VIDOBJ	= video.o \
 	    vid_hercules.o vid_herculesplus.o vid_incolor.o \
 	    vid_colorplus.o \
 	    vid_genius.o \
+		vid_nv_riva128.o \
 	    vid_s3.o vid_s3_virge.o \
 	    vid_et4000.o vid_et4000w32.o vid_icd2061.o \
 	    vid_oti067.o \
diff --git a/src/video.c b/src/video.c
index 1176824ee..48fd4ff16 100644
--- a/src/video.c
+++ b/src/video.c
@@ -89,6 +89,10 @@ static VIDEO_CARD video_cards[] =
         {"MDA",                                    "mda",		&mda_device,                 GFX_MDA},
         {"MDSI Genius",                            "genius",            &genius_device,              GFX_GENIUS},
         {"Number Nine 9FX (S3 Trio64)",            "n9_9fx",		&s3_9fx_device,              GFX_N9_9FX},
+#ifdef DEV_BRANCH
+        {"nVidia RIVA 128",                        "riva128",		&riva128_device,             GFX_RIVA128},
+        {"nVidia RIVA TNT",                        "rivatnt",		&rivatnt_device,             GFX_RIVATNT},
+#endif
         {"OAK OTI-067",                            "oti067",		&oti067_device,              GFX_OTI067},
         {"OAK OTI-077",                            "oti077",		&oti077_device,              GFX_OTI077},
         {"Paradise Bahamas 64 (S3 Vision864)",     "bahamas64",		&s3_bahamas64_device,        GFX_BAHAMAS64},