Added NSF decoder plugin. Fixes 151192.

Original commit message from CVS:
Based on patches by: Johan Dahlin <johan at gnome dot org>
Ronald Bultje <rbultje at ronald dot bitfreak dot net>
* configure.ac:
* gst/nsf/Makefile.am:
* gst/nsf/dis6502.h:
* gst/nsf/fds_snd.c:
* gst/nsf/fds_snd.h:
* gst/nsf/fmopl.c:
* gst/nsf/fmopl.h:
* gst/nsf/gstnsf.c:
* gst/nsf/gstnsf.h:
* gst/nsf/log.c:
* gst/nsf/log.h:
* gst/nsf/memguard.c:
* gst/nsf/memguard.h:
* gst/nsf/mmc5_snd.c:
* gst/nsf/mmc5_snd.h:
* gst/nsf/nes6502.c:
* gst/nsf/nes6502.h:
* gst/nsf/nes_apu.c:
* gst/nsf/nes_apu.h:
* gst/nsf/nsf.c:
* gst/nsf/nsf.h:
* gst/nsf/osd.h:
* gst/nsf/types.h:
* gst/nsf/vrc7_snd.c:
* gst/nsf/vrc7_snd.h:
* gst/nsf/vrcvisnd.c:
* gst/nsf/vrcvisnd.h:
Added NSF decoder plugin. Fixes 151192.

1 files changed, 160 insertions, 0 deletions

diff --git a/gst/nsf/nes6502.h b/gst/nsf/nes6502.h
new file mode 100644
index 00000000..e8ccffd4
--- /dev/null
+++ b/gst/nsf/nes6502.h
@@ -0,0 +1,160 @@
+/*
+** Nofrendo (c) 1998-2000 Matthew Conte (matt@conte.com)
+**
+**
+** This program is free software; you can redistribute it and/or
+** modify it under the terms of version 2 of the GNU Library General 
+** Public License as published by the Free Software Foundation.
+**
+** 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 
+** Library General Public License for more details.  To obtain a 
+** copy of the GNU Library General Public License, write to the Free 
+** Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+** Any permitted reproduction of these routines, in whole or in part,
+** must bear this legend.
+**
+**
+** nes6502.h
+**
+** NES custom 6502 CPU definitions / prototypes
+** $Id$
+*/
+
+/* NOTE: 16-bit addresses avoided like the plague: use 32-bit values
+**       wherever humanly possible
+*/
+#ifndef _NES6502_H_
+#define _NES6502_H_
+
+/* Define this to enable decimal mode in ADC / SBC (not needed in NES) */
+/*#define  NES6502_DECIMAL*/
+
+/* number of bank pointers the CPU emulation core handles */
+#ifdef NSF_PLAYER
+#define  NES6502_4KBANKS
+#endif
+
+#ifdef NES6502_4KBANKS
+#define  NES6502_NUMBANKS  16
+#define  NES6502_BANKSHIFT 12
+#else
+#define  NES6502_NUMBANKS  8
+#define  NES6502_BANKSHIFT 13
+#endif
+
+#define  NES6502_BANKMASK  ((0x10000 / NES6502_NUMBANKS) - 1)
+
+
+/* P (flag) register bitmasks */
+#define  N_FLAG         0x80
+#define  V_FLAG         0x40
+#define  R_FLAG         0x20  /* Reserved, always 1 */
+#define  B_FLAG         0x10
+#define  D_FLAG         0x08
+#define  I_FLAG         0x04
+#define  Z_FLAG         0x02
+#define  C_FLAG         0x01
+
+/* Vector addresses */
+#define  NMI_VECTOR     0xFFFA
+#define  RESET_VECTOR   0xFFFC
+#define  IRQ_VECTOR     0xFFFE
+
+/* cycle counts for interrupts */
+#define  INT_CYCLES     7
+#define  RESET_CYCLES   6
+
+#define  NMI_MASK       0x01
+#define  IRQ_MASK       0x02
+
+/* Stack is located on 6502 page 1 */
+#define  STACK_OFFSET   0x0100
+
+typedef struct
+{
+   uint32 min_range, max_range;
+   uint8 (*read_func)(uint32 address);
+} nes6502_memread;
+
+typedef struct
+{
+   uint32 min_range, max_range;
+   void (*write_func)(uint32 address, uint8 value);
+} nes6502_memwrite;
+
+typedef struct
+{
+   uint8 *mem_page[NES6502_NUMBANKS];  /* memory page pointers */
+   nes6502_memread *read_handler;
+   nes6502_memwrite *write_handler;
+   int dma_cycles;
+   uint32 pc_reg;
+   uint8 a_reg, p_reg, x_reg, y_reg, s_reg;
+   uint8 int_pending;
+} nes6502_context;
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/* Functions which govern the 6502's execution */
+extern void nes6502_init(void);
+extern void nes6502_reset(void);
+extern int nes6502_execute(int total_cycles);
+extern void nes6502_nmi(void);
+extern void nes6502_irq(void);
+extern uint8 nes6502_getbyte(uint32 address);
+extern uint32 nes6502_getcycles(boolean reset_flag);
+extern void nes6502_setdma(int cycles);
+
+/* Context get/set */
+extern void nes6502_setcontext(nes6502_context *cpu);
+extern void nes6502_getcontext(nes6502_context *cpu);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _NES6502_H_ */
+
+/*
+** $Log$
+** Revision 1.1  2006/07/13 15:07:28  wtay
+** Based on patches by: Johan Dahlin <johan at gnome dot org>
+** Ronald Bultje <rbultje at ronald dot bitfreak dot net>
+** * configure.ac:
+** * gst/nsf/Makefile.am:
+** * gst/nsf/dis6502.h:
+** * gst/nsf/fds_snd.c:
+** * gst/nsf/fds_snd.h:
+** * gst/nsf/fmopl.c:
+** * gst/nsf/fmopl.h:
+** * gst/nsf/gstnsf.c:
+** * gst/nsf/gstnsf.h:
+** * gst/nsf/log.c:
+** * gst/nsf/log.h:
+** * gst/nsf/memguard.c:
+** * gst/nsf/memguard.h:
+** * gst/nsf/mmc5_snd.c:
+** * gst/nsf/mmc5_snd.h:
+** * gst/nsf/nes6502.c:
+** * gst/nsf/nes6502.h:
+** * gst/nsf/nes_apu.c:
+** * gst/nsf/nes_apu.h:
+** * gst/nsf/nsf.c:
+** * gst/nsf/nsf.h:
+** * gst/nsf/osd.h:
+** * gst/nsf/types.h:
+** * gst/nsf/vrc7_snd.c:
+** * gst/nsf/vrc7_snd.h:
+** * gst/nsf/vrcvisnd.c:
+** * gst/nsf/vrcvisnd.h:
+** Added NSF decoder plugin. Fixes 151192.
+**
+** Revision 1.4  2000/06/09 15:12:25  matt
+** initial revision
+**
+*/