commit d484bfaf001faeb48fee28d046149108ab52a394
Author: Simon Howard <fraggle@gmail.com>
AuthorDate: Wed Sep 30 00:11:44 2009 +0000
Commit: Simon Howard <fraggle@gmail.com>
CommitDate: Wed Sep 30 00:11:44 2009 +0000
Add Win9x native OPL driver (untested).
Subversion-branch: /branches/opl-branch
Subversion-revision: 1696
---
opl/Makefile.am | 5 ++-
opl/opl.c | 6 +++
opl/opl_win9x.c | 137 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 146 insertions(+), 2 deletions(-)
diff --git a/opl/Makefile.am b/opl/Makefile.am
index 9a757fdb..8bbed9f0 100644
--- a/opl/Makefile.am
+++ b/opl/Makefile.am
@@ -8,10 +8,11 @@ noinst_LIBRARIES=libopl.a
libopl_a_SOURCES = \
opl_internal.h \
opl.c opl.h \
- opl_obsd.c opl_obsd.h \
opl_linux.c \
- opl_sdl.c \
+ opl_obsd.c \
opl_queue.c opl_queue.h \
+ opl_sdl.c \
opl_timer.c opl_timer.h \
+ opl_win9x.c \
fmopl.c fmopl.h
diff --git a/opl/opl.c b/opl/opl.c
index 00c9b04a..749c19d1 100644
--- a/opl/opl.c
+++ b/opl/opl.c
@@ -45,6 +45,9 @@ extern opl_driver_t opl_linux_driver;
#ifdef HAVE_LIBI386
extern opl_driver_t opl_openbsd_driver;
#endif
+#ifdef _WIN32
+extern opl_driver_t opl_win9x_driver;
+#endif
extern opl_driver_t opl_sdl_driver;
static opl_driver_t *drivers[] =
@@ -54,6 +57,9 @@ static opl_driver_t *drivers[] =
#endif
#ifdef HAVE_LIBI386
&opl_openbsd_driver,
+#endif
+#ifdef _WIN32
+ &opl_win9x_driver,
#endif
&opl_sdl_driver,
NULL
diff --git a/opl/opl_win9x.c b/opl/opl_win9x.c
new file mode 100644
index 00000000..04555760
--- /dev/null
+++ b/opl/opl_win9x.c
@@ -0,0 +1,137 @@
+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 2009 Simon Howard
+//
+// This program 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 2
+// of the License, or (at your option) any later version.
+//
+// This program 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 this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+// DESCRIPTION:
+// OPL Win9x native interface.
+//
+//-----------------------------------------------------------------------------
+
+#include "config.h"
+
+#ifdef _WIN32
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+#include "opl.h"
+#include "opl_internal.h"
+#include "opl_timer.h"
+
+static unsigned int opl_port_base;
+
+// MingW?
+
+#if defined(__GNUC__) && defined(__i386__)
+
+static unsigned int OPL_Win9x_PortRead(opl_port_t port)
+{
+ unsigned char result;
+
+ __asm__ volatile (
+ "movl %1, %%edx\n"
+ "inb %%dx, %%al\n"
+ "movb %%al, %0"
+ : "=m" (result)
+ : "r" (opl_port_base + port)
+ : "edx", "al", "memory"
+ );
+
+ return result;
+}
+
+static void OPL_Win9x_PortWrite(opl_port_t port, unsigned int value)
+{
+ __asm__ volatile (
+ "movl %0, %%edx\n"
+ "movb %1, %%al\n"
+ "outb %%al, %%dx"
+ :
+ : "r" (opl_port_base + port), "r" ((unsigned char) value)
+ : "edx", "al"
+ );
+}
+
+// TODO: MSVC version
+// #elif defined(_MSC_VER) && defined(_M_IX6) ...
+
+#else
+
+// Not x86, or don't know how to do port R/W on this compiler.
+
+#define NO_PORT_RW
+
+static unsigned int OPL_Win9x_PortRead(opl_port_t port)
+{
+ return 0;
+}
+
+static void OPL_Win9x_PortWrite(opl_port_t port, unsigned int value)
+{
+}
+
+#endif
+
+static int OPL_Win9x_Init(unsigned int port_base)
+{
+#ifndef NO_PORT_RW
+
+ OSVERSIONINFO version_info;
+
+ // Check that this is a Windows 9x series OS:
+
+ GetVersionEx(&version_info);
+
+ if (version_info.dwPlatformId == 1)
+ {
+ opl_port_base = port_base;
+
+ // Start callback thread
+
+ return OPL_Timer_StartThread();
+ }
+
+#endif
+
+ return 0;
+}
+
+static void OPL_Win9x_Shutdown(void)
+{
+ // Stop callback thread
+
+ OPL_Timer_StopThread();
+}
+
+opl_driver_t opl_win9x_driver =
+{
+ "Win9x",
+ OPL_Win9x_Init,
+ OPL_Win9x_Shutdown,
+ OPL_Win9x_PortRead,
+ OPL_Win9x_PortWrite,
+ OPL_Timer_SetCallback,
+ OPL_Timer_ClearCallbacks,
+ OPL_Timer_Lock,
+ OPL_Timer_Unlock,
+ OPL_Timer_SetPaused
+};
+
+#endif /* #ifdef _WIN32 */
+