diff --git a/src/ibm.h b/src/ibm.h
index 2bbc1ba9e..e4382fa90 100644
--- a/src/ibm.h
+++ b/src/ibm.h
@@ -465,6 +465,7 @@ enum
         GFX_HERCULESPLUS,
         GFX_RIVATNT2,
 
+	GFX_TRIGEM_UNK,
         GFX_MAX
 };
 
diff --git a/src/vid_vga.c b/src/vid_vga.c
index e9f73cf16..67458e126 100644
--- a/src/vid_vga.c
+++ b/src/vid_vga.c
@@ -105,6 +105,31 @@ void *vga_init()
         return vga;
 }
 
+void *trigem_unk_init()
+{
+        vga_t *vga = malloc(sizeof(vga_t));
+        memset(vga, 0, sizeof(vga_t));
+
+        rom_init(&vga->bios_rom, "roms/ibm_vga.bin", 0xc0000, 0x8000, 0x7fff, 0x2000, MEM_MAPPING_EXTERNAL);
+
+        svga_init(&vga->svga, vga, 1 << 18, /*256kb*/
+                   NULL,
+                   vga_in, vga_out,
+                   NULL,
+                   NULL);
+
+        io_sethandler(0x03c0, 0x0020, vga_in, NULL, NULL, vga_out, NULL, NULL, vga);
+
+	io_sethandler(0x22ca, 0x0002, svga_in, NULL, NULL, svga_out, NULL, NULL, svga);
+	io_sethandler(0x22ce, 0x0002, svga_in, NULL, NULL, svga_out, NULL, NULL, svga);
+	io_sethandler(0x32ca, 0x0002, svga_in, NULL, NULL, svga_out, NULL, NULL, svga);
+
+        vga->svga.bpp = 8;
+        vga->svga.miscout = 1;
+        
+        return vga;
+}
+
 /*PS/1 uses a standard VGA controller, but with no option ROM*/
 void *ps1vga_init()
 {
@@ -171,6 +196,17 @@ device_t vga_device =
         vga_force_redraw,
         vga_add_status_info
 };
+device_t trigem_unk_device =
+{
+        "VGA",
+        0,
+        trigem_unk_init,
+        vga_close,
+        vga_available,
+        vga_speed_changed,
+        vga_force_redraw,
+        vga_add_status_info
+};
 device_t ps1vga_device =
 {
         "PS/1 VGA",
diff --git a/src/video.c b/src/video.c
index 674894ec0..9cd292101 100644
--- a/src/video.c
+++ b/src/video.c
@@ -91,9 +91,10 @@ static VIDEO_CARD video_cards[] =
         {"Phoenix S3 Trio64",                      &s3_phoenix_trio64_device,   GFX_PHOENIX_TRIO64},
         {"Plantronics ColorPlus",                  &colorplus_device,           GFX_COLORPLUS},
         {"S3 ViRGE/DX",                            &s3_virge_375_device,        GFX_VIRGEDX},
-        {"Trident TVGA8900D",                      &tvga8900d_device,           GFX_TVGA},
-        {"Tseng ET4000AX",                         &et4000_device,              GFX_ET4000},
         {"Trident TGUI9440",                       &tgui9440_device,            GFX_TGUI9440},
+        {"Trident TVGA8900D",                      &tvga8900d_device,           GFX_TVGA},
+        {"TriGem Unknown Adapter",                 &trigem_unk_device,          GFX_TRIGEM_UNK},
+        {"Tseng ET4000AX",                         &et4000_device,              GFX_ET4000},
         {"VGA",                                    &vga_device,                 GFX_VGA},
         {"Wyse 700",                               &wy700_device,               GFX_WY700},
         {"",                                       NULL,                        0}