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authorJames Haley2011-04-26 05:49:53 +0000
committerJames Haley2011-04-26 05:49:53 +0000
commitec74db92724c181962479703092365b332b70b0a (patch)
treed04e551baa4e687dad8296ca7cc98438dac051aa
parent085797aeb4c05857b315ebf4448322829151aedc (diff)
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Support for Win32 native OPL output when compiled with Microsoft Visual
C++. Confirmed to work with Aureal Vortex AU8830 in Win98SE by GhostlyDeath. Subversion-branch: /trunk/chocolate-doom Subversion-revision: 2331
-rw-r--r--opl/opl_win32.c31
1 files changed, 29 insertions, 2 deletions
diff --git a/opl/opl_win32.c b/opl/opl_win32.c
index 29df3643..277ce76c 100644
--- a/opl/opl_win32.c
+++ b/opl/opl_win32.c
@@ -72,8 +72,35 @@ static void OPL_Win32_PortWrite(opl_port_t port, unsigned int value)
);
}
-// TODO: MSVC version
-// #elif defined(_MSC_VER) && defined(_M_IX6) ...
+// haleyjd 20110417: MSVC version
+#elif defined(_MSC_VER) && defined(_M_IX86)
+
+static unsigned int OPL_Win32_PortRead(opl_port_t port)
+{
+ unsigned char result;
+ opl_port_t dst_port = opl_port_base + port;
+
+ __asm
+ {
+ mov edx, dword ptr [dst_port]
+ in al, dx
+ mov byte ptr [result], al
+ }
+
+ return result;
+}
+
+static void OPL_Win32_PortWrite(opl_port_t port, unsigned int value)
+{
+ opl_port_t dst_port = opl_port_base + port;
+
+ __asm
+ {
+ mov edx, dword ptr [dst_port]
+ mov al, byte ptr [value]
+ out dx, al
+ }
+}
#else