Added the ASUS ISA-486C.

src/machine/m_at_386dx_486.c

@@ -2445,6 +2445,35 @@ machine_at_dataexpert386wb_init(const machine_t *model)
     return ret;
 }
 
+int
+machine_at_isa486c_init(const machine_t *model)
+{
+    int ret;
+
+#if 0
+    ret = bios_load_linear("roms/machines/isa486c/asus-isa-486c-401a0-040591-657e2c17a0218417632602.bin",
+                           0x000f0000, 65536, 0);
+#else
+    ret = bios_load_linear("roms/machines/isa486c/128k.bin",
+                           0x000e0000, 131072, 0);
+#endif
+
+    if (bios_only || !ret)
+        return ret;
+
+    machine_at_common_init(model);
+
+    device_add(&isa486c_device);
+    device_add(&port_92_key_device);
+
+    device_add(&keyboard_at_ami_device);
+
+    if (fdc_current[0] == FDC_INTERNAL)
+        device_add(&fdc_at_device);
+
+    return ret;
+}
+
 int
 machine_at_genoa486_init(const machine_t *model)
 {