diff --git a/Filelist b/Filelist
index 3d67aff..046be1a 100644
--- a/Filelist
+++ b/Filelist
@@ -428,8 +428,6 @@
 		README_os390.txt \
 		src/Make_mint.mak \
 		src/Make_ro.mak \
-		src/gui_riscos.c \
-		src/gui_riscos.h \
 		src/if_sniff.c \
 		src/infplist.xml \
 		src/link.390 \
@@ -437,10 +435,6 @@
 		src/os_beos.h \
 		src/os_beos.rsrc \
 		src/os_mint.h \
-		src/os_riscos.c \
-		src/os_riscos.h \
-		src/proto/gui_riscos.pro \
-		src/proto/os_riscos.pro \
 		src/os_vms_fix.com \
 		src/toolbar.phi \
 
diff --git a/src/proto/gui_riscos.pro b/src/proto/gui_riscos.pro
deleted file mode 100644
index 9bfc02b..0000000
--- a/src/proto/gui_riscos.pro
+++ /dev/null
@@ -1,66 +0,0 @@
-/* Prototypes for gui_riscos.c
- * Based on gui_x11_pro.h (10 March 2002 version)
- */
-void gui_mch_prepare __ARGS((int *argc, char **argv));
-int gui_mch_init_check __ARGS((void));
-int gui_mch_init __ARGS((void));
-void gui_mch_uninit __ARGS((void));
-void gui_mch_new_colors __ARGS((void));
-int gui_mch_open __ARGS((void));
-void gui_init_tooltip_font __ARGS((void));
-void gui_init_menu_font __ARGS((void));void gui_mch_exit __ARGS((int rc));
-int gui_mch_get_winpos __ARGS((int *x, int *y));
-void gui_mch_set_winpos __ARGS((int x, int y));
-void gui_mch_set_shellsize __ARGS((int width, int height, int min_width, int min_height, int base_width, int base_height));
-void gui_mch_get_screen_dimensions __ARGS((int *screen_w, int *screen_h));
-int gui_mch_init_font __ARGS((char_u *font_name, int do_fontset));
-GuiFont gui_mch_get_font __ARGS((char_u *name, int giveErrorIfMissing));
-int gui_mch_adjust_charheight __ARGS((void));
-void gui_mch_set_font __ARGS((GuiFont font));
-void gui_mch_set_fontset __ARGS((GuiFontset fontset));
-void gui_mch_free_font __ARGS((GuiFont font));
-void gui_mch_free_fontset __ARGS((GuiFontset fontset));
-GuiFontset gui_mch_get_fontset __ARGS((char_u *name, int giveErrorIfMissing, int fixed_width));
-guicolor_T gui_mch_get_color __ARGS((char_u *reqname));
-void gui_mch_set_fg_color __ARGS((guicolor_T color));
-void gui_mch_set_bg_color __ARGS((guicolor_T color));
-void gui_mch_draw_string __ARGS((int row, int col, char_u *s, int len, int flags));
-int gui_mch_haskey __ARGS((char_u *name));
-void gui_mch_beep __ARGS((void));
-void gui_mch_flash __ARGS((int msec));
-void gui_mch_invert_rectangle __ARGS((int r, int c, int nr, int nc));
-void gui_mch_iconify __ARGS((void));
-void gui_mch_set_foreground __ARGS((void));
-void gui_mch_draw_hollow_cursor __ARGS((guicolor_T color));
-void gui_mch_draw_part_cursor __ARGS((int w, int h, guicolor_T color));
-void gui_mch_update __ARGS((void));
-int gui_mch_wait_for_chars __ARGS((long wtime));
-void gui_mch_flush __ARGS((void));
-void gui_mch_clear_block __ARGS((int row1, int col1, int row2, int col2));
-void gui_mch_clear_all __ARGS((void));
-void gui_mch_delete_lines __ARGS((int row, int num_lines));
-void gui_mch_insert_lines __ARGS((int row, int num_lines));
-void clip_mch_lose_selection __ARGS((VimClipboard *cbd));
-int clip_mch_own_selection __ARGS((VimClipboard *cbd));
-void clip_mch_request_selection __ARGS((VimClipboard *cbd));
-void clip_mch_set_selection __ARGS((VimClipboard *cbd));
-void gui_mch_menu_grey __ARGS((vimmenu_T *menu, int grey));
-void gui_mch_menu_hidden __ARGS((vimmenu_T *menu, int hidden));
-void gui_mch_draw_menubar __ARGS((void));
-void gui_mch_set_blinking __ARGS((long waittime, long on, long off));
-void gui_mch_stop_blink __ARGS((void));
-void gui_mch_start_blink __ARGS((void));
-void process_event __ARGS((int event, int *block));
-void gui_mch_show_popupmenu __ARGS((vimmenu_T *menu));
-long_u gui_mch_get_rgb __ARGS((guicolor_T pixel));
-void gui_mch_getmouse __ARGS((int *x, int *y));
-void gui_mch_setmouse __ARGS((int x, int y));
-void gui_mch_drawsign __ARGS((int row, int col, int typenr));
-void gui_mch_destroy_sign __ARGS((XImage *sign));
-void gui_mch_mousehide __ARGS((int hide));
-void mch_set_mouse_shape __ARGS((int shape));
-void gui_mch_menu_set_tip __ARGS((vimmenu_T *menu));
-
-void ro_redraw_title __ARGS((int window));
-int ro_ok_to_quit __ARGS((void));
-/* vim: set ft=c : */
diff --git a/src/proto/os_riscos.pro b/src/proto/os_riscos.pro
deleted file mode 100644
index 9ea4cd5..0000000
--- a/src/proto/os_riscos.pro
+++ /dev/null
@@ -1,49 +0,0 @@
-/* os_riscos.c */
-void mch_write __ARGS((char_u *s, int len));
-int mch_inchar __ARGS((char_u *buf, int maxlen, long wtime, int tb_change_cnt));
-int mch_char_avail __ARGS((void));
-long_u mch_avail_mem __ARGS((int special));
-void mch_delay __ARGS((long msec, int ignoreinput));
-void mch_suspend __ARGS((void));
-void mch_init __ARGS((void));
-int mch_check_win __ARGS((int argc, char **argv));
-int mch_input_isatty __ARGS((void));
-int mch_can_restore_title __ARGS((void));
-int mch_can_restore_icon __ARGS((void));
-void mch_settitle __ARGS((char_u *title, char_u *icon));
-void mch_restore_title __ARGS((int which));
-int mch_get_user_name __ARGS((char_u *s, int len));
-void mch_get_host_name __ARGS((char_u *s, int len));
-long mch_get_pid __ARGS((void));
-int mch_dirname __ARGS((char_u *buf, int len));
-int mch_FullName __ARGS((char_u *fname, char_u *buf, int len, int force));
-int mch_isFullName __ARGS((char_u *fname));
-long mch_getperm __ARGS((char_u *name));
-int mch_setperm __ARGS((char_u *name, long perm));
-void mch_hide __ARGS((char_u *name));
-int mch_isdir __ARGS((char_u *name));
-int mch_can_exe __ARGS((char_u *name));
-int mch_nodetype __ARGS((char_u *name));
-void mch_early_init __ARGS((void));
-void mch_exit __ARGS((int r));
-void mch_settmode __ARGS((int tmode));
-void mch_setmouse __ARGS((int on));
-int mch_screenmode __ARGS((char_u *arg));
-int mch_get_shellsize __ARGS((void));
-void mch_set_shellsize __ARGS((void));
-void mch_new_shellsize __ARGS((void));
-int mch_call_shell __ARGS((char_u *cmd, int options));
-void mch_breakcheck __ARGS((void));
-int mch_expandpath __ARGS((garray_T *gap, char_u *path, int flags));
-int expand_section __ARGS((garray_T *gap, char_u *root, char_u *rest, int flags));
-int mch_expand_wildcards __ARGS((int num_pat, char_u **pat, int *num_file, char_u ***file, int flags));
-int mch_has_exp_wildcard __ARGS((char_u *p));
-int mch_has_wildcard __ARGS((char_u *p));
-int mch_remove __ARGS((char_u *file));
-char_u *mch_munge_fname __ARGS((char_u *fname));
-int ro_buflist_add __ARGS((char_u *old_name));
-int mch_chdir __ARGS((char_u *dir));
-void mch_read_filetype __ARGS((char_u *file));
-void mch_set_filetype __ARGS((char_u *file, char_u *type));
-int mch_check_filetype __ARGS((char_u *fname, char_u *type));
-/* vim: set ft=c : */
diff --git a/src/version.c b/src/version.c
index 1d14392..62051bc 100644
--- a/src/version.c
+++ b/src/version.c
@@ -715,6 +715,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    188,
+/**/
     187,
 /**/
     186,