--- Frodo4/Src/SID_linux.h	2003/07/01 17:36:32	1.1
+++ Frodo4/Src/SID_linux.h	2004/01/10 18:11:07	1.3
@@ -1,7 +1,7 @@
 /*
  *  SID_linux.h - 6581 emulation, Linux specific stuff
  *
- *  Frodo (C) 1994-1997,2002 Christian Bauer
+ *  Frodo (C) 1994-1997,2002-2003 Christian Bauer
  *
  *  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
@@ -23,6 +23,18 @@
 #include <sys/ioctl.h>
 #include <linux/soundcard.h>
 
+// Catweasel ioctls (included here for convenience)
+#include <linux/ioctl.h>
+#define CWSID_IOCTL_TYPE ('S')
+#define CWSID_IOCTL_RESET        _IO(CWSID_IOCTL_TYPE, 0)
+#define CWSID_IOCTL_CARDTYPE	 _IOR(CWSID_IOCTL_TYPE, 4, int)
+#define CWSID_IOCTL_PAL          _IO(CWSID_IOCTL_TYPE, 0x11)
+#define CWSID_IOCTL_NTSC         _IO(CWSID_IOCTL_TYPE, 0x12)
+#define CWSID_IOCTL_DOUBLEBUFFER _IOW(CWSID_IOCTL_TYPE, 0x21, int)
+#define CWSID_IOCTL_DELAY        _IOW(CWSID_IOCTL_TYPE, 0x22, int)
+#define CWSID_MAGIC 0x100
+#define HAVE_CWSID 1
+
 #include "VIC.h"
 
 
@@ -136,3 +148,76 @@ void DigitalRenderer::EmulateLine(void)
 	buffer_pos = 0;
     }    
 }
+
+
+/*
+ *  Renderer for Catweasel card
+ */
+
+// Rendere class
+class CatweaselRenderer : public SIDRenderer {
+public:
+	CatweaselRenderer();
+	virtual ~CatweaselRenderer();
+
+	virtual void Reset(void);
+	virtual void EmulateLine(void) {}
+	virtual void WriteRegister(uint16 adr, uint8 byte);
+	virtual void NewPrefs(Prefs *prefs) {}
+	virtual void Pause(void) {}
+	virtual void Resume(void) {}
+
+private:
+	int cwsid_fh; // Catweasel device file handle
+};
+
+// Constructor: Open Catweasel device and reset SID
+CatweaselRenderer::CatweaselRenderer()
+{
+	cwsid_fh = open("/dev/sid", O_WRONLY);
+	if (cwsid_fh >= 0) {
+		int i;
+		if (ioctl(cwsid_fh, CWSID_IOCTL_CARDTYPE, &i) < 0 || i != CWSID_MAGIC) {
+			close(cwsid_fh);
+			cwsid_fh = -1;
+		} else {
+			ioctl(cwsid_fh, CWSID_IOCTL_RESET);
+			ioctl(cwsid_fh, CWSID_IOCTL_DOUBLEBUFFER, 0);
+		}
+	}
+
+	Reset();
+}
+
+// Destructor: Reset SID and close Catweasel device
+CatweaselRenderer::~CatweaselRenderer()
+{
+	Reset();
+
+	if (cwsid_fh >= 0) {
+		close(cwsid_fh);
+		cwsid_fh = -1;
+	}
+}
+
+// Reset SID
+void CatweaselRenderer::Reset(void)
+{
+	if (cwsid_fh >= 0) {
+		uint8 zero = 0;
+		ioctl(cwsid_fh, CWSID_IOCTL_RESET);
+		lseek(cwsid_fh, 24, SEEK_SET);
+		write(cwsid_fh, &zero, 1);
+	}
+}
+
+// Write to register
+void CatweaselRenderer::WriteRegister(uint16 adr, uint8 byte)
+{
+	if (cwsid_fh >= 0 && adr < 0x1a) {
+		lseek(cwsid_fh, adr, SEEK_SET);
+		write(cwsid_fh, &byte, 1);
+		lseek(cwsid_fh, adr, SEEK_SET);
+		write(cwsid_fh, &byte, 1);
+	}
+}