From: Yann Dirson <ydirson@free.fr>
Date: Wed, 6 Nov 2013 21:33:03 +0000 (+0100)
Subject: Switch display-selection framework from dspwrappers to "struct display".
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=9da823015c78c8e9131cf76f14598a1071d29192;p=gnushogi.git

Switch display-selection framework from dspwrappers to "struct display".

Much easier to write, will allow to correctly separate raw from xshogi,
to add proper xboard support, etc.
---

diff --git a/gnushogi/Makefile.in b/gnushogi/Makefile.in
index b4c3932..1da5643 100644
--- a/gnushogi/Makefile.in
+++ b/gnushogi/Makefile.in
@@ -115,7 +115,6 @@ NOTCOMMONFILES = \
                 book.o         \
                 commondsp.o    \
                 @CURSESDSP@    \
-                dspwrappers.o  \
                 eval.o         \
                 genmove.o      \
                 init.o         \
@@ -165,9 +164,6 @@ commondsp.o: commondsp.c
 cursesdsp.o: cursesdsp.c
 	$(CC) $(CFLAGS) -c $<
 
-dspwrappers.o: dspwrappers.c
-	$(CC) $(CFLAGS) -c $<
-
 genmove.o: genmove.c
 	$(CC) $(CFLAGS) -c $<
 
@@ -274,11 +270,11 @@ attacks.o:     attacks.c gnushogi.h
 book.o:        book.c gnushogi.h
 commondsp.o:   commondsp.c gnushogi.h
 cursesdsp.o:   cursesdsp.c gnushogi.h
-dspwrappers.o: dspwrappers.c gnushogi.h
 genmove.o:     genmove.c gnushogi.h
 globals.o:     globals.c gnushogi.h
 eval.o:        eval.c eval.h gnushogi.h $(SRCDIR)/pattern.h
 init.o:        init.c gnushogi.h $(SRCDIR)/pattern.h
+init-common.o: init-common.c gnushogi.h
 main.o:        main.c gnushogi.h
 makepattern.o: pattern.c gnushogi.h $(SRCDIR)/pattern.h
 pattern.o:     pattern.c gnushogi.h $(SRCDIR)/pattern.h pattern.inc
diff --git a/gnushogi/book.c b/gnushogi/book.c
index ae3956f..727ae55 100644
--- a/gnushogi/book.c
+++ b/gnushogi/book.c
@@ -876,7 +876,7 @@ GetOpenings(void)
         }
 
         sprintf(msg, "Book used %d(%d).", B.bookcount, B.booksize);
-        ShowMessage(msg);
+        dsp->ShowMessage(msg);
     }
 
     /* Set everything back to start the game. */
@@ -886,7 +886,7 @@ GetOpenings(void)
     /* Now get ready to play .*/
     if (!B.bookcount)
     {
-        ShowMessage("Can't find book.");
+        dsp->ShowMessage("Can't find book.");
         Book = 0;
     }
 }
diff --git a/gnushogi/commondsp.c b/gnushogi/commondsp.c
index 8750fcd..a5a3b42 100644
--- a/gnushogi/commondsp.c
+++ b/gnushogi/commondsp.c
@@ -47,6 +47,7 @@
 char mvstr[4][6];
 char *InPtr;
 int InBackground = false;
+struct display *dsp = &raw_display;
 
 
 #if defined(BOOKTEST)
@@ -164,7 +165,7 @@ algbr(short f, short t, short flag)
     if ((f == t) && ((f != 0) || (t != 0)))
     {
         if (!barebones) {
-            Printf("error in algbr: FROM=TO=%d, flag=0x%4x\n", t, flag);
+            dsp->Printf("error in algbr: FROM=TO=%d, flag=0x%4x\n", t, flag);
         }
 
         mvstr[0][0] = mvstr[1][0] = mvstr[2][0] = mvstr[3][0] = '\0';
@@ -297,7 +298,7 @@ VerifyMove(char *s, VerifyMove_mode iop, unsigned short *mv)
         if (SqAttacked(PieceList[opponent][0], computer, &blocked))
         {
             UnmakeMove(opponent, &xnode, &tempb, &tempc, &tempsf, &tempst);
-            AlwaysShowMessage("Illegal move (in check) %s", s);
+            dsp->AlwaysShowMessage("Illegal move (in check) %s", s);
             return false;
         }
         else
@@ -305,7 +306,7 @@ VerifyMove(char *s, VerifyMove_mode iop, unsigned short *mv)
             if (iop == VERIFY_AND_TRY_MODE)
                 return true;
 
-            UpdateDisplay(xnode.f, xnode.t, 0, (short) xnode.flags);
+            dsp->UpdateDisplay(xnode.f, xnode.t, 0, (short) xnode.flags);
             GameList[GameCnt].depth = GameList[GameCnt].score = 0;
             GameList[GameCnt].nodes = 0;
             ElapsedTime(COMPUTE_AND_INIT_MODE);
@@ -330,7 +331,7 @@ VerifyMove(char *s, VerifyMove_mode iop, unsigned short *mv)
                     char buf[20];
 
                     sprintf(buf, "%s mates!\n", ColorStr[opponent]);
-                    ShowMessage(buf);
+                    dsp->ShowMessage(buf);
                     flag.mate = true;
                 }
             }
@@ -339,12 +340,12 @@ VerifyMove(char *s, VerifyMove_mode iop, unsigned short *mv)
         }
     }
 
-    AlwaysShowMessage("Illegal move (no match) %s", s);
+    dsp->AlwaysShowMessage("Illegal move (no match) %s", s);
 
     if (!barebones && (cnt > 1))
     {
         sprintf(buffer, "Ambiguous Move %s!", s);
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
     }
 
     return false;
@@ -410,6 +411,23 @@ skipb()
 }
 
 
+void RequestInputString(char* buffer, unsigned bufsize)
+{
+    static char fmt[10];
+    int ret = snprintf(fmt, sizeof(fmt), "%%%us", bufsize);
+    if (ret < 0 ) {
+        perror("RequestInputString snprintf");
+        exit(1);
+    }
+    if (ret >= sizeof(fmt)) {
+        fprintf(stderr,
+                "Insufficient format-buffer size in %s for bufsize=%u\n",
+                __FUNCTION__, bufsize);
+        exit(1);
+    }
+    dsp->doRequestInputString(fmt, buffer);
+}
+
 
 void
 GetGame(void)
@@ -423,7 +441,7 @@ GetGame(void)
     if (savefile[0]) {
         strcpy(fname, savefile);
     } else {
-        ShowMessage("Enter file name: ");
+        dsp->ShowMessage("Enter file name: ");
         RequestInputString(fname, sizeof(fname)-1);
     }
 
@@ -628,7 +646,7 @@ GetGame(void)
 
     ZeroRPT();
     InitializeStats();
-    UpdateDisplay(0, 0, 1, 0);
+    dsp->UpdateDisplay(0, 0, 1, 0);
     Sdepth = 0;
     hint = 0;
 }
@@ -648,7 +666,7 @@ SaveGame(void)
     if (savefile[0]) {
         strcpy(fname, savefile);
     } else {
-        ShowMessage("Enter file name: ");
+        dsp->ShowMessage("Enter file name: ");
         RequestInputString(fname, sizeof(fname)-1);
     }
 
@@ -773,11 +791,11 @@ SaveGame(void)
 
         fclose(fd);
 
-        ShowMessage("Game saved");
+        dsp->ShowMessage("Game saved");
     }
     else
     {
-        ShowMessage("Could not open file");
+        dsp->ShowMessage("Could not open file");
     }
 }
 
@@ -797,7 +815,7 @@ GetXGame(void)
     short sq;
     short side, isp;
 
-    ShowMessage("Enter file name: ");
+    dsp->ShowMessage("Enter file name: ");
     RequestInputString(fname, sizeof(fname)-1);
 
     if (fname[0] == '\0')
@@ -911,7 +929,7 @@ GetXGame(void)
     Game50 = 1;
     ZeroRPT();
     InitializeStats();
-    UpdateDisplay(0, 0, 1, 0);
+    dsp->UpdateDisplay(0, 0, 1, 0);
     Sdepth = 0;
     hint = 0;
 }
@@ -926,7 +944,7 @@ SaveXGame(void)
     short sq, piece;
     short side, isp;
 
-    ShowMessage("Enter file name: ");
+    dsp->ShowMessage("Enter file name: ");
     RequestInputString(fname, sizeof(fname)-1);
 
     if (fname[0] == '\0')
@@ -1008,7 +1026,7 @@ BookSave(void)
         strcpy(fname, savefile);
     } else {
         /* Enter file name */
-        ShowMessage("Enter file name: ");
+        dsp->ShowMessage("Enter file name: ");
         RequestInputString(fname, sizeof(fname)-1);
     }
 
@@ -1080,11 +1098,11 @@ BookSave(void)
 
         fclose(fd);
 
-        ShowMessage("Game saved");
+        dsp->ShowMessage("Game saved");
     }
     else
     {
-        ShowMessage("Could not open file");
+        dsp->ShowMessage("Could not open file");
     }
 }
 
@@ -1295,8 +1313,8 @@ Undo(void)
     flag.mate = false;
     Sdepth = 0;
     player = player ^ 1;
-    ShowSidetoMove();
-    UpdateDisplay(0, 0, 1, 0);
+    dsp->ShowSidetoMove();
+    dsp->UpdateDisplay(0, 0, 1, 0);
 
     if (flag.regularstart)
         Book = false;
@@ -1407,7 +1425,7 @@ TestSpeed(void(*f)(short side, short ply,
     else
         et = 1;
 
-    ShowNodeCnt(cnt);
+    dsp->ShowNodeCnt(cnt);
 }
 
 
@@ -1445,7 +1463,7 @@ TestPSpeed(short(*f) (short side), unsigned j)
     else
         et = 1;
 
-    ShowNodeCnt(cnt);
+    dsp->ShowNodeCnt(cnt);
 }
 
 
@@ -1565,7 +1583,7 @@ InputCommand(char *command)
 
 #if !defined NOPOST
         if (flag.post)
-            GiveHint();
+            dsp->GiveHint();
 #endif
 
         /* do the hint move */
@@ -1574,7 +1592,7 @@ InputCommand(char *command)
             Sdepth = 0;
 
 #ifdef QUIETBACKGROUND
-            ShowPrompt();
+            dsp->ShowPrompt();
             have_shown_prompt = true;
 #endif /* QUIETBACKGROUND */
 
@@ -1621,7 +1639,7 @@ InputCommand(char *command)
         {
 #endif /* QUIETBACKGROUND */
 
-            ShowPrompt();
+            dsp->ShowPrompt();
 
 #ifdef QUIETBACKGROUND
         }
@@ -1633,7 +1651,7 @@ InputCommand(char *command)
             if (NOT_CURSES)
                 s[0] = '\0';
 
-            eof = GetString(sx);
+            eof = dsp->GetString(sx);
         } else {
             strcpy(sx, command);
             done = true;
@@ -1642,7 +1660,7 @@ InputCommand(char *command)
         sscanf(sx, "%s", s);
 
         if (eof)
-            ExitShogi();
+            dsp->ExitShogi();
 
         if (s[0] == '\0')
             continue;
@@ -1655,8 +1673,8 @@ InputCommand(char *command)
             if (old_xshogi)
                 display_type = DISPLAY_RAW;
 
-            ClearScreen();
-            UpdateDisplay(0, 0, 1, 0);
+            dsp->ClearScreen();
+            dsp->UpdateDisplay(0, 0, 1, 0);
 
             if (old_xshogi)
                 display_type = DISPLAY_X;
@@ -1683,11 +1701,11 @@ InputCommand(char *command)
         else if ((strcmp(s, "set") == 0)
                  || (strcmp(s, "edit") == 0))
         {
-            EditBoard();
+            dsp->EditBoard();
         }
         else if ((strcmp(s, "setup") == 0))
         {
-            SetupBoard();
+            dsp->SetupBoard();
         }
         else if (strcmp(s, "first") == 0)
         {
@@ -1711,7 +1729,7 @@ InputCommand(char *command)
         }
         else if (strcmp(s, "help") == 0)
         {
-            help();
+            dsp->help();
         }
         else if (strcmp(s, "material") == 0)
         {
@@ -1737,7 +1755,7 @@ InputCommand(char *command)
         else if (strcmp(s, "new") == 0)
         {
             NewGame();
-            UpdateDisplay(0, 0, 1, 0);
+            dsp->UpdateDisplay(0, 0, 1, 0);
         }
         else if (strcmp(s, "list") == 0)
         {
@@ -1746,7 +1764,7 @@ InputCommand(char *command)
         else if ((strcmp(s, "level") == 0)
                  || (strcmp(s, "clock") == 0))
         {
-            SelectLevel(sx);
+            dsp->SelectLevel(sx);
         }
         else if (strcmp(s, "hash") == 0)
         {
@@ -1770,11 +1788,11 @@ InputCommand(char *command)
         }
         else if (strcmp(s, "Awindow") == 0)
         {
-            ChangeAlphaWindow();
+            dsp->ChangeAlphaWindow();
         }
         else if (strcmp(s, "Bwindow") == 0)
         {
-            ChangeBetaWindow();
+            dsp->ChangeBetaWindow();
         }
         else if (strcmp(s, "rcptr") == 0)
         {
@@ -1782,7 +1800,7 @@ InputCommand(char *command)
         }
         else if (strcmp(s, "hint") == 0)
         {
-            GiveHint();
+            dsp->GiveHint();
         }
         else if (strcmp(s, "both") == 0)
         {
@@ -1796,8 +1814,8 @@ InputCommand(char *command)
         else if (strcmp(s, "reverse") == 0)
         {
             flag.reverse = !flag.reverse;
-            ClearScreen();
-            UpdateDisplay(0, 0, 1, 0);
+            dsp->ClearScreen();
+            dsp->UpdateDisplay(0, 0, 1, 0);
         }
         else if (strcmp(s, "switch") == 0)
         {
@@ -1875,11 +1893,11 @@ InputCommand(char *command)
         }
         else if (strcmp(s, "depth") == 0)
         {
-            ChangeSearchDepth();
+            dsp->ChangeSearchDepth();
         }
         else if (strcmp(s, "hashdepth") == 0)
         {
-            ChangeHashDepth();
+            dsp->ChangeHashDepth();
         }
         else if (strcmp(s, "random") == 0)
         {
@@ -1899,26 +1917,26 @@ InputCommand(char *command)
         }
         else if (strcmp(s, "contempt") == 0)
         {
-            SetContempt();
+            dsp->SetContempt();
         }
         else if (strcmp(s, "xwndw") == 0)
         {
-            ChangeXwindow();
+            dsp->ChangeXwindow();
         }
         else if (strcmp(s, "rv") == 0)
         {
             flag.rv = !flag.rv;
-            UpdateDisplay(0, 0, 1, 0);
+            dsp->UpdateDisplay(0, 0, 1, 0);
         }
         else if (strcmp(s, "coords") == 0)
         {
             flag.coords = !flag.coords;
-            UpdateDisplay(0, 0, 1, 0);
+            dsp->UpdateDisplay(0, 0, 1, 0);
         }
         else if (strcmp(s, "stars") == 0)
         {
             flag.stars = !flag.stars;
-            UpdateDisplay(0, 0, 1, 0);
+            dsp->UpdateDisplay(0, 0, 1, 0);
         }
         else if (!XSHOGI && strcmp(s, "moves") == 0)
         {
@@ -1936,44 +1954,44 @@ InputCommand(char *command)
 #endif
                 SwagHt = 0;
 
-            ShowMessage("Testing MoveList Speed");
+            dsp->ShowMessage("Testing MoveList Speed");
             temp = generate_move_flags;
             generate_move_flags = true;
             TestSpeed(MoveList, 1);
             generate_move_flags = temp;
-            ShowMessage("Testing CaptureList Speed");
+            dsp->ShowMessage("Testing CaptureList Speed");
             TestSpeed(CaptureList, 1);
-            ShowMessage("Testing Eval Speed");
+            dsp->ShowMessage("Testing Eval Speed");
             ExaminePosition(opponent);
             TestPSpeed(ScorePosition, 1);
         }
         else if (!XSHOGI && strcmp(s, "test") == 0)
         {
 #ifdef SLOW_CPU
-            ShowMessage("Testing MoveList Speed");
+            dsp->ShowMessage("Testing MoveList Speed");
             TestSpeed(MoveList, 2000);
-            ShowMessage("Testing CaptureList Speed");
+            dsp->ShowMessage("Testing CaptureList Speed");
             TestSpeed(CaptureList, 3000);
-            ShowMessage("Testing Eval Speed");
+            dsp->ShowMessage("Testing Eval Speed");
             ExaminePosition(opponent);
             TestPSpeed(ScorePosition, 1500);
 #else
-            ShowMessage("Testing MoveList Speed");
+            dsp->ShowMessage("Testing MoveList Speed");
             TestSpeed(MoveList, 20000);
-            ShowMessage("Testing CaptureList Speed");
+            dsp->ShowMessage("Testing CaptureList Speed");
             TestSpeed(CaptureList, 30000);
-            ShowMessage("Testing Eval Speed");
+            dsp->ShowMessage("Testing Eval Speed");
             ExaminePosition(opponent);
             TestPSpeed(ScorePosition, 15000);
 #endif
         }
         else if (!XSHOGI && strcmp(s, "p") == 0)
         {
-            ShowPostnValues();
+            dsp->ShowPostnValues();
         }
         else if (!XSHOGI && strcmp(s, "debug") == 0)
         {
-            DoDebug();
+            dsp->DoDebug();
         }
         else
         {
@@ -1989,7 +2007,7 @@ InputCommand(char *command)
                 if (rpt >= 3)
                 {
                     DRAW = DRAW_REPETITION;
-                    ShowMessage(DRAW);
+                    dsp->ShowMessage(DRAW);
                     GameList[GameCnt].flags |= draw;
 
                         flag.mate = true;
@@ -2064,4 +2082,3 @@ SetTimeControl(void)
     et = 0;
     ElapsedTime(COMPUTE_AND_INIT_MODE);
 }
-
diff --git a/gnushogi/cursesdsp.c b/gnushogi/cursesdsp.c
index 906e44d..a42bb26 100644
--- a/gnushogi/cursesdsp.c
+++ b/gnushogi/cursesdsp.c
@@ -41,7 +41,6 @@
 #include <curses.h>
 
 #include "gnushogi.h"
-#include "cursesdsp.h"
 
 #if HAVE_UNISTD_H
 #include <unistd.h>
@@ -70,12 +69,16 @@ unsigned short MV[MAXDEPTH];
 int MSCORE;
 char *DRAW;
 
-/* Forward declarations. */
-/* FIXME: change this name, puh-leeze! */
+/****************************************
+ * forward declarations
+ ****************************************/
 
+/* FIXME: change this name, puh-leeze! */
 static void UpdateCatched(void);
 static void DrawPiece(short sq);
 static void ShowScore(short score);
+void Curses_UpdateDisplay(short f, short t, short redraw, short isspec);
+void Curses_Die(int sig);
 
 /****************************************
  * Trivial output functions.
@@ -165,20 +168,26 @@ Curses_ShowMessage(char *s)
 
 
 void
-Curses_AlwaysShowMessage(const char *format, va_list ap)
+Curses_AlwaysShowMessage(const char *format, ...)
 {
     static char buffer[60];
+    va_list ap;
+    va_start(ap, format);
     vsnprintf(buffer, sizeof(buffer), format, ap);
     Curses_ShowMessage(buffer);
+    va_end(ap);
 }
 
 
 void
-Curses_Printf(const char *format, va_list ap)
+Curses_Printf(const char *format, ...)
 {
     static char buffer[60];
+    va_list ap;
+    va_start(ap, format);
     vsnprintf(buffer, sizeof(buffer), format, ap);
     printw("%s", buffer);
+    va_end(ap);
 }
 
 
@@ -672,7 +681,7 @@ Curses_OutputMove(void)
             t = (l + h) >> 1;
         }
 
-        ShowNodeCnt(NodeCnt);
+        Curses_ShowNodeCnt(NodeCnt);
         gotoXY(TAB, 23);
         printw("Max Tree = %5d", t);
         ClearEoln();
@@ -714,7 +723,7 @@ Curses_UpdateClocks(void)
     printw("%d:%02d  ", m, s); 
 
     if (flag.post)
-        ShowNodeCnt(NodeCnt);
+        Curses_ShowNodeCnt(NodeCnt);
 
     refresh();
 }
@@ -1200,3 +1209,48 @@ Curses_SetupBoard(void)
 {
     Curses_ShowMessage("'setup' command is not supported in Cursesmode");
 }
+
+
+struct display curses_display =
+{
+    .ChangeAlphaWindow    = Curses_ChangeAlphaWindow,
+    .ChangeBetaWindow     = Curses_ChangeBetaWindow,
+    .ChangeHashDepth      = Curses_ChangeHashDepth,
+    .ChangeSearchDepth    = Curses_ChangeSearchDepth,
+    .ChangeXwindow        = Curses_ChangeXwindow,
+    .ClearScreen          = Curses_ClearScreen,
+    .DoDebug              = Curses_DoDebug,
+    .DoTable              = Curses_DoTable,
+    .EditBoard            = Curses_EditBoard,
+    .ExitShogi            = Curses_ExitShogi,
+    .GiveHint             = Curses_GiveHint,
+    .Initialize           = Curses_Initialize,
+    .ShowNodeCnt          = Curses_ShowNodeCnt,
+    .OutputMove           = Curses_OutputMove,
+    .PollForInput         = Curses_PollForInput,
+    .SetContempt          = Curses_SetContempt,
+    .SearchStartStuff     = Curses_SearchStartStuff,
+    .SelectLevel          = Curses_SelectLevel,
+    .ShowCurrentMove      = Curses_ShowCurrentMove,
+    .ShowDepth            = Curses_ShowDepth,
+    .ShowGameType         = Curses_ShowGameType,
+    .ShowLine             = Curses_ShowLine,
+    .ShowMessage          = Curses_ShowMessage,
+    .AlwaysShowMessage    = Curses_AlwaysShowMessage,
+    .Printf               = Curses_Printf,
+    .doRequestInputString = Curses_doRequestInputString,
+    .GetString            = Curses_GetString,
+    .SetupBoard           = Curses_SetupBoard,
+    .ShowPatternCount     = Curses_ShowPatternCount,
+    .ShowPostnValue       = Curses_ShowPostnValue,
+    .ShowPostnValues      = Curses_ShowPostnValues,
+    .ShowPrompt           = Curses_ShowPrompt,
+    .ShowResponseTime     = Curses_ShowResponseTime,
+    .ShowResults          = Curses_ShowResults,
+    .ShowSidetoMove       = Curses_ShowSidetoMove,
+    .ShowStage            = Curses_ShowStage,
+    .TerminateSearch      = Curses_TerminateSearch,
+    .UpdateClocks         = Curses_UpdateClocks,
+    .UpdateDisplay        = Curses_UpdateDisplay,
+    .help                 = Curses_help,
+};
diff --git a/gnushogi/cursesdsp.h b/gnushogi/cursesdsp.h
deleted file mode 100644
index 6f2b07e..0000000
--- a/gnushogi/cursesdsp.h
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * FILE: cursesdsp.h
- *
- *     Curses interface for GNU Shogi.
- *
- * ----------------------------------------------------------------------
- * Copyright (c) 1993, 1994, 1995 Matthias Mutz
- * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
- *
- * GNU SHOGI is based on GNU CHESS
- *
- * Copyright (c) 1988, 1989, 1990 John Stanback
- * Copyright (c) 1992 Free Software Foundation
- *
- * This file is part of GNU SHOGI.
- *
- * GNU Shogi is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 3 of the License,
- * or (at your option) any later version.
- *
- * GNU Shogi is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with GNU Shogi; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- * ----------------------------------------------------------------------
- *
- */
-
-#ifndef _CURSESDSP_H_
-#define _CURSESDSP_H_
-
-#include "gnushogi.h"
-
-/* The following are common to rawdsp.h and cursesdsp.h */
-
-void Curses_ChangeAlphaWindow(void);
-void Curses_ChangeBetaWindow(void);
-void Curses_ChangeHashDepth(void);
-void Curses_ChangeSearchDepth(void);
-void Curses_ChangeXwindow(void);
-void Curses_ClearScreen(void);
-void Curses_Die(int sig);
-void Curses_DoDebug(void);
-void Curses_DoTable(short table[NO_SQUARES]);
-void Curses_EditBoard(void);
-void Curses_ExitShogi(void);
-void Curses_GiveHint(void);
-void Curses_Initialize(void);
-void Curses_ShowNodeCnt(long NodeCnt);
-void Curses_OutputMove(void);
-void Curses_PollForInput(void);
-void Curses_SearchStartStuff(short side);
-void Curses_SelectLevel(char *sx);
-void Curses_SetContempt(void);
-void Curses_ShowCurrentMove(short pnt, short f, short t);
-void Curses_ShowDepth(char ch);
-void Curses_ShowGameType(void);
-void Curses_ShowLine(unsigned short *bstline);
-void Curses_ShowMessage(char *s);
-void Curses_AlwaysShowMessage(const char *format, va_list ap);
-void Curses_Printf(const char *format, va_list ap);
-void Curses_doRequestInputString(const char* fmt, char* buffer);
-int  Curses_GetString(char* sx);
-void Curses_SetupBoard(void);
-void Curses_ShowPatternCount(short side, short n);
-void Curses_ShowPostnValue(short sq);
-void Curses_ShowPostnValues(void);
-void Curses_ShowPrompt(void);
-void Curses_ShowResponseTime(void);
-void Curses_ShowResults(short score, unsigned short *bstline, char ch);
-void Curses_ShowSidetoMove(void);
-void Curses_ShowStage(void);
-void Curses_TerminateSearch(int sig);
-void Curses_UpdateClocks(void);
-void Curses_UpdateDisplay(short f, short t, short redraw, short isspec);
-void Curses_help(void);
-
-#endif /* _CURSESDSP_H_ */
diff --git a/gnushogi/dspwrappers.c b/gnushogi/dspwrappers.c
deleted file mode 100644
index 3cdfbce..0000000
--- a/gnushogi/dspwrappers.c
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * FILE: dspwrappers.c
- *
- *     Wrapper functions which call analogous functions in rawdsp.c
- *     or cursesdsp.c depending on the interface.
- *
- * ----------------------------------------------------------------------
- * Copyright (c) 1993, 1994, 1995 Matthias Mutz
- * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
- *
- * GNU SHOGI is based on GNU CHESS
- *
- * Copyright (c) 1988, 1989, 1990 John Stanback
- * Copyright (c) 1992 Free Software Foundation
- *
- * This file is part of GNU SHOGI.
- *
- * GNU Shogi is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 3 of the License,
- * or (at your option) any later version.
- *
- * GNU Shogi is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with GNU Shogi; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- * ----------------------------------------------------------------------
- *
- */
-
-#include "gnushogi.h"
-#include "dspwrappers.h"
-#include "rawdsp.h"
-#include "cursesdsp.h"
-
-#include <stdio.h>
-
-#define CASE_DSP_RAW(func,args) \
-  case DISPLAY_RAW:             \
-  case DISPLAY_X:               \
-    func args;                  \
-    break
-
-#ifdef HAVE_LIBCURSES
-#define CASE_DSP_CURSES(func,args) \
-  case DISPLAY_CURSES:             \
-    func args;                     \
-    break;
-#else
-#define CASE_DSP_CURSES(func,args)
-#endif
-
-#define DISPLAY_FUNC(func,argsdecl,args)        \
-  void func argsdecl                            \
-  {                                             \
-    switch (display_type) {                     \
-      CASE_DSP_RAW(Raw_ ## func, args);         \
-      CASE_DSP_CURSES(Curses_ ## func, args);   \
-    }                                           \
-  }
-#define DISPLAY_VOIDFUNC(func)                  \
-  DISPLAY_FUNC(func,(void),())
-
-#define DISPLAY_STDARGFUNC(func,argsdecl,last,args)     \
-  void func argsdecl                                    \
-  {                                                     \
-    va_list ap;                                         \
-    va_start(ap, last);                                 \
-    switch (display_type) {                             \
-      CASE_DSP_RAW(Raw_ ## func, args);                 \
-      CASE_DSP_CURSES(Curses_ ## func, args);           \
-    }                                                   \
-    va_end(ap);                                         \
-  }
-
-DISPLAY_VOIDFUNC(ChangeAlphaWindow)
-DISPLAY_VOIDFUNC(ChangeBetaWindow)
-DISPLAY_VOIDFUNC(ChangeHashDepth)
-DISPLAY_VOIDFUNC(ChangeSearchDepth)
-DISPLAY_VOIDFUNC(ChangeXwindow)
-DISPLAY_VOIDFUNC(ClearScreen)
-DISPLAY_VOIDFUNC(DoDebug)
-DISPLAY_FUNC(DoTable, (short table[NO_SQUARES]), (table))
-DISPLAY_VOIDFUNC(EditBoard)
-DISPLAY_VOIDFUNC(ExitShogi)
-DISPLAY_VOIDFUNC(GiveHint)
-DISPLAY_VOIDFUNC(Initialize)
-DISPLAY_FUNC(ShowNodeCnt, (long NodeCnt), (NodeCnt))
-DISPLAY_VOIDFUNC(OutputMove)
-DISPLAY_VOIDFUNC(PollForInput)
-DISPLAY_VOIDFUNC(SetContempt)
-DISPLAY_FUNC(SearchStartStuff, (short side), (side))
-DISPLAY_FUNC(SelectLevel, (char *sx), (sx))
-DISPLAY_VOIDFUNC(SetupBoard)
-DISPLAY_FUNC(ShowCurrentMove, (short pnt, short f, short t), (pnt, f, t))
-DISPLAY_FUNC(ShowDepth, (char ch), (ch))
-DISPLAY_VOIDFUNC(ShowGameType)
-DISPLAY_FUNC(ShowLine, (unsigned short *bstline), (bstline))
-DISPLAY_FUNC(ShowMessage, (char *s), (s))
-DISPLAY_STDARGFUNC(AlwaysShowMessage, (const char *format, ...), format, (format, ap))
-DISPLAY_STDARGFUNC(Printf, (const char *format, ...), format, (format, ap))
-DISPLAY_FUNC(ShowPatternCount, (short side, short n), (side, n))
-DISPLAY_FUNC(ShowPostnValue, (short sq), (sq))
-DISPLAY_VOIDFUNC(ShowPostnValues)
-DISPLAY_VOIDFUNC(ShowPrompt)
-DISPLAY_VOIDFUNC(ShowResponseTime)
-DISPLAY_FUNC(ShowResults, (short score, unsigned short *bstline, char ch), (score, bstline, ch))
-DISPLAY_VOIDFUNC(ShowSidetoMove)
-DISPLAY_VOIDFUNC(ShowStage)
-DISPLAY_FUNC(TerminateSearch, (int sig), (sig))
-DISPLAY_VOIDFUNC(UpdateClocks)
-DISPLAY_FUNC(UpdateDisplay, (short f, short t, short redraw, short isspec), (f, t, redraw, isspec))
-DISPLAY_VOIDFUNC(help)
-
-DISPLAY_FUNC(doRequestInputString, (const char* fmt, char* buffer), (fmt, buffer))
-void RequestInputString(char* buffer, unsigned bufsize)
-{
-    static char fmt[10];
-    int ret = snprintf(fmt, sizeof(fmt), "%%%us", bufsize);
-    if (ret >= sizeof(fmt)) {
-        fprintf(stderr,
-                "Insufficient format-buffer size in %s for bufsize=%u\n",
-                __FUNCTION__, bufsize);
-        exit(1);
-    }
-    doRequestInputString(fmt, buffer);
-}
-
-/*********/
-
-#define CASE_DSPFUNC_RAW(func,args) \
-  case DISPLAY_RAW:                 \
-  case DISPLAY_X:                   \
-    return (func args);             \
-    break
-
-#ifdef HAVE_LIBCURSES
-#define CASE_DSPFUNC_CURSES(func,args) \
-  case DISPLAY_CURSES:                 \
-    return (func args);                \
-    break;
-#else
-#define CASE_DSPFUNC_CURSES(func,args)
-#endif
-
-#define DISPLAY_INTFUNC(func,argsdecl,args)         \
-  int func argsdecl                                 \
-  {                                                 \
-    switch (display_type) {                         \
-      CASE_DSPFUNC_RAW(Raw_ ## func, args);         \
-      CASE_DSPFUNC_CURSES(Curses_ ## func, args);   \
-    }                                               \
-    assert(0);                                      \
-  }
-
-DISPLAY_INTFUNC(GetString, (char* sx), (sx))
diff --git a/gnushogi/dspwrappers.h b/gnushogi/dspwrappers.h
deleted file mode 100644
index 0bfe79f..0000000
--- a/gnushogi/dspwrappers.h
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * FILE: dspwrappers.h
- *
- *     Wrapper functions which call analogous functions in rawdsp.c
- *     or cursesdsp.c depending on the interface.
- *
- * ----------------------------------------------------------------------
- * Copyright (c) 1993, 1994, 1995 Matthias Mutz
- * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
- *
- * GNU SHOGI is based on GNU CHESS
- *
- * Copyright (c) 1988, 1989, 1990 John Stanback
- * Copyright (c) 1992 Free Software Foundation
- *
- * This file is part of GNU SHOGI.
- *
- * GNU Shogi is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 3 of the License,
- * or (at your option) any later version.
- *
- * GNU Shogi is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with GNU Shogi; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- * ----------------------------------------------------------------------
- *
- */
-
-#ifndef _DSPWRAPPERS_H_
-#define _DSPWRAPPERS_H_
-
-#include <stdarg.h>
-
-extern void ChangeAlphaWindow(void);
-extern void ChangeBetaWindow(void);
-extern void ChangeHashDepth(void);
-extern void ChangeSearchDepth(void);
-extern void ChangeXwindow(void);
-extern void ClearScreen(void);
-extern void DoDebug(void);
-extern void DoTable(short table[NO_SQUARES]);
-extern void EditBoard(void);
-extern void ExitShogi(void);
-extern void GiveHint(void);
-extern void Initialize(void);
-extern void ShowNodeCnt(long NodeCnt);
-extern void OutputMove(void);
-extern void PollForInput(void);
-extern void SetContempt(void);
-extern void SearchStartStuff(short side);
-extern void SelectLevel(char *sx);
-extern void ShowCurrentMove(short pnt, short f, short t);
-extern void ShowDepth(char ch);
-extern void ShowGameType(void);
-extern void ShowLine(unsigned short *bstline);
-extern void ShowMessage(char *s);
-extern void AlwaysShowMessage(const char *format, ...);
-extern void Printf(const char *format, ...);
-extern void RequestInputString(char* buffer, unsigned bufsize);
-extern int  GetString(char* sx);
-extern void SetupBoard(void);
-extern void ShowPatternCount(short side, short n);
-extern void ShowPostnValue(short sq);
-extern void ShowPostnValues(void);
-extern void ShowPrompt(void);
-extern void ShowResponseTime(void);
-extern void ShowResults(short score, unsigned short *bstline, char ch);
-extern void ShowSidetoMove(void);
-extern void ShowStage(void);
-extern void TerminateSearch(int sig);
-extern void UpdateClocks(void);
-extern void UpdateDisplay(short f, short t, short redraw, short isspec);
-extern void help(void);
-
-#endif /* _DSPWRAPPERS_H_ */
diff --git a/gnushogi/eval.c b/gnushogi/eval.c
index 569b997..ac3404a 100644
--- a/gnushogi/eval.c
+++ b/gnushogi/eval.c
@@ -32,9 +32,6 @@
 #include "gnushogi.h"
 #include "pattern.h"
 
-extern void
-ShowStage(void);
-
 /* Hash table for preventing multiple scoring of the same position */
 
 int EADD = 0;       /* number of writes to the cache table */
@@ -2138,7 +2135,7 @@ UpdatePatterns(short side, short GameCnt)
     }
 
     if (flag.post)
-        ShowPatternCount(side, n);
+        dsp->ShowPatternCount(side, n);
 
     if (os != END_OF_SEQUENCES)
         update_advance_bonus(side, os);
@@ -2530,8 +2527,8 @@ DetermineGameType(short side_to_move)
     }
     else
     {
-        ShowPatternCount(black, -1);
-        ShowPatternCount(white, -1);
+        dsp->ShowPatternCount(black, -1);
+        dsp->ShowPatternCount(white, -1);
     }
 }
 
@@ -2708,7 +2705,7 @@ DetermineStage(short side)
         stage = 0;
 
     if (flag.post)
-        ShowStage();
+        dsp->ShowStage();
 
     /* Determine stage dependant weights */
 
diff --git a/gnushogi/genmove.c b/gnushogi/genmove.c
index 9034b65..988d0fa 100644
--- a/gnushogi/genmove.c
+++ b/gnushogi/genmove.c
@@ -250,7 +250,7 @@ Link(short side, short piece,
 {
     if (*TrP == TREE)
     {
-        ShowMessage("TREE overflow\n");
+        dsp->ShowMessage("TREE overflow\n");
     }
     else
     {
diff --git a/gnushogi/gnushogi.h b/gnushogi/gnushogi.h
index 677d22c..e1a5471 100644
--- a/gnushogi/gnushogi.h
+++ b/gnushogi/gnushogi.h
@@ -43,6 +43,8 @@
 #include "debug.h"
 #include "opts.h"          /* Various option-setting #defines.  */
 
+#include <stdarg.h>
+
 /*
  * Display options.
  */
@@ -1124,6 +1126,55 @@ typedef enum
 extern int VerifyMove(char *s, VerifyMove_mode iop, unsigned short *mv);
 extern unsigned short TTage;
 
-#include "dspwrappers.h"   /* Display functions. */
+/* display driver framework */
+
+struct display
+{
+    void (*ChangeAlphaWindow)(void);
+    void (*ChangeBetaWindow)(void);
+    void (*ChangeHashDepth)(void);
+    void (*ChangeSearchDepth)(void);
+    void (*ChangeXwindow)(void);
+    void (*ClearScreen)(void);
+    void (*DoDebug)(void);
+    void (*DoTable)(short table[NO_SQUARES]);
+    void (*EditBoard)(void);
+    void (*ExitShogi)(void);
+    void (*GiveHint)(void);
+    void (*Initialize)(void);
+    void (*ShowNodeCnt)(long NodeCnt);
+    void (*OutputMove)(void);
+    void (*PollForInput)(void);
+    void (*SetContempt)(void);
+    void (*SearchStartStuff)(short side);
+    void (*SelectLevel)(char *sx);
+    void (*ShowCurrentMove)(short pnt, short f, short t);
+    void (*ShowDepth)(char ch);
+    void (*ShowGameType)(void);
+    void (*ShowLine)(unsigned short *bstline);
+    void (*ShowMessage)(char *s);
+    void (*AlwaysShowMessage)(const char *format, ...);
+    void (*Printf)(const char *format, ...);
+    void (*doRequestInputString)(const char* fmt, char* buffer);
+    int  (*GetString)(char* sx);
+    void (*SetupBoard)(void);
+    void (*ShowPatternCount)(short side, short n);
+    void (*ShowPostnValue)(short sq);
+    void (*ShowPostnValues)(void);
+    void (*ShowPrompt)(void);
+    void (*ShowResponseTime)(void);
+    void (*ShowResults)(short score, unsigned short *bstline, char ch);
+    void (*ShowSidetoMove)(void);
+    void (*ShowStage)(void);
+    void (*TerminateSearch)(int sig);
+    void (*UpdateClocks)(void);
+    void (*UpdateDisplay)(short f, short t, short redraw, short isspec);
+    void (*help)(void);
+};
+
+extern struct display *dsp;
+
+extern struct display raw_display;
+extern struct display curses_display;
 
 #endif /* _GNUSHOGI_H_ */
diff --git a/gnushogi/init-common.c b/gnushogi/init-common.c
index bd571ce..945f9e0 100644
--- a/gnushogi/init-common.c
+++ b/gnushogi/init-common.c
@@ -119,7 +119,7 @@ Initialize_data(void)
 
         if (x >= 0)
         {
-            ShowMessage("datatype 'small_short' is unsigned; "
+            dsp->ShowMessage("datatype 'small_short' is unsigned; "
                         "check gnushogi.h\n");
             return 1;
         }
@@ -132,7 +132,7 @@ Initialize_data(void)
     {
         sprintf(buffer, "Cannot allocate %ld bytes for search tree",
                 (long)n);
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
         return 1;
     }
 
@@ -142,7 +142,7 @@ Initialize_data(void)
     if (!hashcode)
     {
         sprintf(buffer, "Cannot allocate %ld bytes for hashcode", (long)n);
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
         return 1;
     }
 
@@ -154,7 +154,7 @@ Initialize_data(void)
         sprintf(buffer,
                 "Cannot allocate %ld bytes for drop_hashcode",
                 (long)n);
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
         return 1;
     }
 
@@ -166,7 +166,7 @@ Initialize_data(void)
         sprintf(buffer,
                 "Cannot allocate %ld bytes for game record",
                 (long)n);
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
         return 1;
     }
 
@@ -183,7 +183,7 @@ Initialize_data(void)
             {
                 sprintf(buffer, "cannot allocate %ld space for nextdir %d",
                         (long)(n), i);
-                ShowMessage(buffer);
+                dsp->ShowMessage(buffer);
             }
 
             nextdir[i] = NULL;
@@ -198,7 +198,7 @@ Initialize_data(void)
             {
                 sprintf(buffer, "cannot allocate %ld space for nextpos %d",
                         (long)(n), i);
-                ShowMessage(buffer);
+                dsp->ShowMessage(buffer);
             }
 
             use_nextpos = false;
@@ -216,7 +216,7 @@ Initialize_data(void)
 
     if (!value)
     {
-        ShowMessage("cannot allocate value space");
+        dsp->ShowMessage("cannot allocate value space");
         return 1;
     }
 
@@ -225,7 +225,7 @@ Initialize_data(void)
 
     if (!fscore)
     {
-        ShowMessage("cannot allocate fscore space");
+        dsp->ShowMessage("cannot allocate fscore space");
         return 1;
     }
 
@@ -237,7 +237,7 @@ Initialize_data(void)
     {
         sprintf(buffer, "Cannot allocate %ld bytes for history table",
                 (long)sizeof_history);
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
         use_history = false;
     }
 #endif
@@ -253,7 +253,7 @@ Initialize_data(void)
         {
             sprintf(buffer, "Cannot allocate %ld bytes for cache table %ld",
                     (long)n, (long)i);
-            ShowMessage(buffer);
+            dsp->ShowMessage(buffer);
             use_etable = false;
         }
     }
@@ -303,7 +303,7 @@ Initialize_data(void)
     {
         sprintf(buffer, "Cannot allocate %ld bytes for transposition table",
                 (long)(2 * n));
-        ShowMessage(buffer);
+        dsp->ShowMessage(buffer);
         ttable[0] = ttable[1] = NULL;
     }
 #endif /* ttblsz */
@@ -314,7 +314,7 @@ Initialize_data(void)
 
     if (!distdata)
     {
-        ShowMessage("cannot allocate distdata space...");
+        dsp->ShowMessage("cannot allocate distdata space...");
         use_distdata = false;
     }
 #endif
diff --git a/gnushogi/init.c b/gnushogi/init.c
index e6b495f..d86abc4 100644
--- a/gnushogi/init.c
+++ b/gnushogi/init.c
@@ -591,7 +591,7 @@ NewGame(void)
     }
 
     ClearCaptured();
-    ClearScreen();
+    dsp->ClearScreen();
     InitializeStats();
 
 #ifdef HAVE_GETTIMEOFDAY
@@ -614,9 +614,9 @@ NewGame(void)
         if (TCflag)
             SetTimeControl();
         else if (MaxResponseTime == 0)
-            SelectLevel(sx);
+            dsp->SelectLevel(sx);
 
-        UpdateDisplay(0, 0, 1, 0);
+        dsp->UpdateDisplay(0, 0, 1, 0);
         GetOpenings();
         GetOpeningPatterns(&max_opening_sequence);
 
@@ -675,7 +675,7 @@ InitMain(void)
         barebones    = 0;
     }
 
-    Initialize();
+    dsp->Initialize();
     Initialize_dist();
     Initialize_eval();
 #if !defined SAVE_NEXTPOS
@@ -725,6 +725,6 @@ ExitMain(void)
 #endif /* HASHFILE */
 #endif /* ttblsz */
 
-    ExitShogi();
+    dsp->ExitShogi();
 }
 
diff --git a/gnushogi/main.c b/gnushogi/main.c
index 2dd78b8..b14016b 100644
--- a/gnushogi/main.c
+++ b/gnushogi/main.c
@@ -98,7 +98,7 @@ main (int argc, char **argv)
         case 'C':
             /* Curses interface. */
             display_type = DISPLAY_CURSES;
-
+            dsp = &curses_display;
             break;
 #endif
 
@@ -150,7 +150,7 @@ main (int argc, char **argv)
         case 'R':
             /* Raw text interface. */
             display_type = DISPLAY_RAW;
-
+            dsp = &raw_display;
             break;
 
 
@@ -293,7 +293,7 @@ main (int argc, char **argv)
         case 'X':
             /* X interface. */
             display_type = DISPLAY_X;
-
+            dsp = &raw_display;
             break;
 
 
diff --git a/gnushogi/makepattern.c b/gnushogi/makepattern.c
index 34053d8..774d11f 100644
--- a/gnushogi/makepattern.c
+++ b/gnushogi/makepattern.c
@@ -40,11 +40,15 @@ char *patternfile = PATTERNFILE;
 small_short pattern_data[MAX_PATTERN_DATA];
 
 /* minimal ShowMessage to avoid dependency on extraneous display code */
-void
-ShowMessage(char *s)
+static void
+Dummy_ShowMessage(char *s)
 {
     printf("%s\n", s);
 }
+static struct display dummydsp = {
+  .ShowMessage = Dummy_ShowMessage,
+};
+struct display *dsp = &dummydsp;
 
 #define is_digit(c) (((c) >= '0') && ((c) <= '9'))
 #define is_alpha(c) ((((c) >= 'a') && ((c) <= 'z')) \
@@ -221,7 +225,7 @@ ReadOpeningSequences (short *pindex)
             {
                 if (ScanPattern(s, pindex))
                 {
-                    ShowMessage("error in pattern sequence...");
+                    dsp->ShowMessage("error in pattern sequence...");
                     exit(1);
                 }
                 else
@@ -237,12 +241,12 @@ ReadOpeningSequences (short *pindex)
         sprintf(s,
                 "Pattern: %d bytes for %d sequences with %d patterns.\n",
                 *pindex, max_opening_sequence, max_pattern);
-        ShowMessage(s);
+        dsp->ShowMessage(s);
 
         fclose(fd);
     } else {
         sprintf(s, "no pattern file '%s'", patternfile);
-        ShowMessage(s);
+        dsp->ShowMessage(s);
     }
 }
 
diff --git a/gnushogi/rawdsp.c b/gnushogi/rawdsp.c
index d868179..99a9ba0 100644
--- a/gnushogi/rawdsp.c
+++ b/gnushogi/rawdsp.c
@@ -41,7 +41,6 @@
 #endif
 
 #include "gnushogi.h"
-#include "rawdsp.h"
 
 unsigned short MV[MAXDEPTH];
 int MSCORE;
@@ -51,6 +50,11 @@ char *DRAW;
 extern char *InPtr;
 extern short pscore[];
 
+/****************************************
+ * forward declarations
+ ****************************************/
+
+void Raw_UpdateDisplay(short f, short t, short redraw, short isspec);
 
 /****************************************
  * Trivial output functions.
@@ -126,17 +130,23 @@ Raw_ShowMessage(char *s)
 
 
 void
-Raw_AlwaysShowMessage(const char *format, va_list ap)
+Raw_AlwaysShowMessage(const char *format, ...)
 {
+    va_list ap;
+    va_start(ap, format);
     vprintf(format, ap);
     printf("\n");
+    va_end(ap);
 }
 
 
 void
-Raw_Printf(const char *format, va_list ap)
+Raw_Printf(const char *format, ...)
 {
+    va_list ap;
+    va_start(ap, format);
     vprintf(format, ap);
+    va_end(ap);
 }
 
 
@@ -961,7 +971,7 @@ Raw_PollForInput(void)
     int cnt = poll(pollfds, sizeof(pollfds)/sizeof(pollfds[0]), 0);
     if (cnt < 0) {
         perror("polling standard input");
-        ExitShogi();
+        Raw_ExitShogi();
     }
 #endif
     if (cnt) { /* if anything to read, or error occured */
@@ -970,3 +980,47 @@ Raw_PollForInput(void)
         flag.bothsides = false;
     }
 }
+
+struct display raw_display =
+{
+    .ChangeAlphaWindow    = Raw_ChangeAlphaWindow,
+    .ChangeBetaWindow     = Raw_ChangeBetaWindow,
+    .ChangeHashDepth      = Raw_ChangeHashDepth,
+    .ChangeSearchDepth    = Raw_ChangeSearchDepth,
+    .ChangeXwindow        = Raw_ChangeXwindow,
+    .ClearScreen          = Raw_ClearScreen,
+    .DoDebug              = Raw_DoDebug,
+    .DoTable              = Raw_DoTable,
+    .EditBoard            = Raw_EditBoard,
+    .ExitShogi            = Raw_ExitShogi,
+    .GiveHint             = Raw_GiveHint,
+    .Initialize           = Raw_Initialize,
+    .ShowNodeCnt          = Raw_ShowNodeCnt,
+    .OutputMove           = Raw_OutputMove,
+    .PollForInput         = Raw_PollForInput,
+    .SetContempt          = Raw_SetContempt,
+    .SearchStartStuff     = Raw_SearchStartStuff,
+    .SelectLevel          = Raw_SelectLevel,
+    .ShowCurrentMove      = Raw_ShowCurrentMove,
+    .ShowDepth            = Raw_ShowDepth,
+    .ShowGameType         = Raw_ShowGameType,
+    .ShowLine             = Raw_ShowLine,
+    .ShowMessage          = Raw_ShowMessage,
+    .AlwaysShowMessage    = Raw_AlwaysShowMessage,
+    .Printf               = Raw_Printf,
+    .doRequestInputString = Raw_doRequestInputString,
+    .GetString            = Raw_GetString,
+    .SetupBoard           = Raw_SetupBoard,
+    .ShowPatternCount     = Raw_ShowPatternCount,
+    .ShowPostnValue       = Raw_ShowPostnValue,
+    .ShowPostnValues      = Raw_ShowPostnValues,
+    .ShowPrompt           = Raw_ShowPrompt,
+    .ShowResponseTime     = Raw_ShowResponseTime,
+    .ShowResults          = Raw_ShowResults,
+    .ShowSidetoMove       = Raw_ShowSidetoMove,
+    .ShowStage            = Raw_ShowStage,
+    .TerminateSearch      = Raw_TerminateSearch,
+    .UpdateClocks         = Raw_UpdateClocks,
+    .UpdateDisplay        = Raw_UpdateDisplay,
+    .help                 = Raw_help,
+};
diff --git a/gnushogi/rawdsp.h b/gnushogi/rawdsp.h
deleted file mode 100644
index 699528e..0000000
--- a/gnushogi/rawdsp.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * FILE: rawdsp.h
- *
- *     Raw text interface for GNU Shogi.
- *
- * ----------------------------------------------------------------------
- * Copyright (c) 1993, 1994, 1995 Matthias Mutz
- * Copyright (c) 1999 Michael Vanier and the Free Software Foundation
- *
- * GNU SHOGI is based on GNU CHESS
- *
- * Copyright (c) 1988, 1989, 1990 John Stanback
- * Copyright (c) 1992 Free Software Foundation
- *
- * This file is part of GNU SHOGI.
- *
- * GNU Shogi is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 3 of the License,
- * or (at your option) any later version.
- *
- * GNU Shogi is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with GNU Shogi; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- * ----------------------------------------------------------------------
- *
- */
-
-#ifndef _RAWDSP_H_
-#define _RAWDSP_H_
-
-#include "gnushogi.h"
-
-/* The following are common to rawdsp.h and cursesdsp.h */
-
-void Raw_ChangeAlphaWindow(void);
-void Raw_ChangeBetaWindow(void);
-void Raw_ChangeHashDepth(void);
-void Raw_ChangeSearchDepth(void);
-void Raw_ChangeXwindow(void);
-void Raw_ClearScreen(void);
-void Raw_Die(int sig);
-void Raw_DoDebug(void);
-void Raw_DoTable(short table[NO_SQUARES]);
-void Raw_EditBoard(void);
-void Raw_ExitShogi(void);
-void Raw_GiveHint(void);
-void Raw_Initialize(void);
-void Raw_ShowNodeCnt(long NodeCnt);
-void Raw_OutputMove(void);
-void Raw_PollForInput(void);
-void Raw_SearchStartStuff(short side);
-void Raw_SelectLevel(char *sx);
-void Raw_SetContempt(void);
-void Raw_ShowCurrentMove(short pnt, short f, short t);
-void Raw_ShowDepth(char ch);
-void Raw_ShowGameType(void);
-void Raw_ShowLine(unsigned short *bstline);
-void Raw_ShowMessage(char *s);
-void Raw_AlwaysShowMessage(const char *format, va_list ap);
-void Raw_Printf(const char *format, va_list ap);
-void Raw_doRequestInputString(const char* fmt, char* buffer);
-int  Raw_GetString(char* sx);
-void Raw_SetupBoard(void);
-void Raw_ShowPatternCount(short side, short n);
-void Raw_ShowPostnValue(short sq);
-void Raw_ShowPostnValues(void);
-void Raw_ShowPrompt(void);
-void Raw_ShowResponseTime(void);
-void Raw_ShowResults(short score, unsigned short *bstline, char ch);
-void Raw_ShowSidetoMove(void);
-void Raw_ShowStage(void);
-void Raw_TerminateSearch(int sig);
-void Raw_UpdateClocks(void);
-void Raw_UpdateDisplay(short f, short t, short redraw, short isspec);
-void Raw_help(void);
-
-#endif /* _RAWDSP_H_ */
-
diff --git a/gnushogi/search.c b/gnushogi/search.c
index 060d958..b8fa819 100644
--- a/gnushogi/search.c
+++ b/gnushogi/search.c
@@ -180,7 +180,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
     if (!background)
 #endif /* QUIETBACKGROUND */
-        ShowResponseTime();
+        dsp->ShowResponseTime();
 
     ExtraTime = 0;
 
@@ -189,12 +189,12 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
     if (!background)
 #endif /* QUIETBACKGROUND */
-        ShowSidetoMove();
+        dsp->ShowSidetoMove();
 
 #ifdef QUIETBACKGROUND
     if (!background)
 #endif /* QUIETBACKGROUND */
-        SearchStartStuff(side);
+        dsp->SearchStartStuff(side);
 
 #ifdef HISTORY
     array_zero(history, sizeof_history);
@@ -304,7 +304,7 @@ SelectMove(short side, SelectMove_mode iop)
 # ifdef QUIETBACKGROUND
         if (!background)
 #endif /* QUIETBACKGROUND */
-            ShowDepth(' ');
+            dsp->ShowDepth(' ');
 
         /* search at this level returns score of PV */
         score = search(side, 1, Sdepth, alpha, beta, PrVar, &rpt);
@@ -320,7 +320,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
             if (!background)
 #endif /* QUIETBACKGROUND */
-                ShowDepth('-');
+                dsp->ShowDepth('-');
 
             if (TCflag && TCcount < MAXTCCOUNTR)
             {
@@ -342,7 +342,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
             if (!background)
 #endif /* QUIETBACKGROUND */
-                ShowDepth('+');
+                dsp->ShowDepth('+');
 
             score = search(side, 1, Sdepth, -(SCORE_LIMIT + 999),
                            (SCORE_LIMIT + 999), PrVar, &rpt);
@@ -395,7 +395,7 @@ SelectMove(short side, SelectMove_mode iop)
 #ifdef QUIETBACKGROUND
         if (!background)
 #endif /* QUIETBACKGROUND */
-            ShowResults(score, PrVar, '.');
+            dsp->ShowResults(score, PrVar, '.');
     }
 
     /********************** end of main loop ***************************/
@@ -452,7 +452,7 @@ SelectMove(short side, SelectMove_mode iop)
         ElapsedTime(COMPUTE_AND_INIT_MODE);
 
     /* update time control info */
-    OutputMove();
+    dsp->OutputMove();
 
     /* if mate set flag */
     if ((score == -(SCORE_LIMIT + 999) || score == (SCORE_LIMIT + 998)))
@@ -580,7 +580,7 @@ search(short side,
 #ifdef QUIETBACKGROUND
             if (!background)
 #endif
-                ShowResponseTime();
+                dsp->ShowResponseTime();
         }
         else if (!TCflag && flag.musttimeout && Sdepth > MINDEPTH)
         {
@@ -870,7 +870,7 @@ search(short side,
 #ifdef QUIETBACKGROUND
                 if (!background)
 #endif /* QUIETBACKGROUND */
-                    ShowCurrentMove(pnt, node->f, node->t);
+                    dsp->ShowCurrentMove(pnt, node->f, node->t);
             }
         }
 #endif
@@ -984,15 +984,15 @@ search(short side,
                     {
                         if (best > beta)
                         {
-                            ShowResults(best, bstline, '+');
+                            dsp->ShowResults(best, bstline, '+');
                         }
                         else if (best < alpha)
                         {
-                            ShowResults(best, bstline, '-');
+                            dsp->ShowResults(best, bstline, '-');
                         }
                         else
                         {
-                            ShowResults (best, bstline, '&');
+                            dsp->ShowResults(best, bstline, '&');
                         }
                     }
 #ifdef QUIETBACKGROUND
diff --git a/gnushogi/tcontrl.c b/gnushogi/tcontrl.c
index fd5f4a5..f8f15dc 100644
--- a/gnushogi/tcontrl.c
+++ b/gnushogi/tcontrl.c
@@ -345,7 +345,7 @@ CheckForTimeout(int score, int globalscore, int Jscore, int zwndw)
 #endif
 
     if (flag.timeout)
-        ShowMessage("timeout");
+        dsp->ShowMessage("timeout");
 }
 
 
@@ -365,7 +365,7 @@ ElapsedTime(ElapsedTime_mode iop)
     struct timeval tv;
 #endif
 
-    PollForInput();
+    dsp->PollForInput();
 
 #ifdef HAVE_GETTIMEOFDAY
     gettimeofday(&tv, NULL);
@@ -410,6 +410,6 @@ ElapsedTime(ElapsedTime_mode iop)
 #ifdef QUIETBACKGROUND
         if (!background)
 #endif
-            UpdateClocks();
+            dsp->UpdateClocks();
     }
 }