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Diffstat (limited to 'src/libxineadec/nosefart/nes6502.h')
| -rw-r--r-- | src/libxineadec/nosefart/nes6502.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/src/libxineadec/nosefart/nes6502.h b/src/libxineadec/nosefart/nes6502.h deleted file mode 100644 index 8713304ec..000000000 --- a/src/libxineadec/nosefart/nes6502.h +++ /dev/null @@ -1,157 +0,0 @@ -/* -** 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: nes6502.h,v 1.2 2003/12/05 15:55:01 f1rmb Exp $ -*/ - -/* straitm */ -#include "types.h" - -/* 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) - -/* Add memory access control flags. This is a ram shadow memory that holds - * for each memory bytes access flags for read, write and execute access. - * The nes6502_mem_access holds all new access (all mode all location). It is - * used to determine if the player has loop in playing time calculation. - */ -#ifdef NES6502_MEM_ACCESS_CTRL -extern uint8 nes6502_mem_access; -# define NES6502_READ_ACCESS 1 -# define NES6502_WRITE_ACCESS 2 -# define NES6502_EXE_ACCESS 4 -#endif /* #ifdef NES6502_MEM_ACCESS_CTRL */ - -/* 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 */ -#ifdef NES6502_MEM_ACCESS_CTRL - uint8 * acc_mem_page[NES6502_NUMBANKS]; /* memory access page pointer */ -#endif - 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); - -#ifdef NES6502_MEM_ACCESS_CTRL -extern void nes6502_chk_mem_access(uint8 * access, int flags); -#else -#define nes6502_chk_mem_access(access,flags) -#endif - -/* 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: nes6502.h,v $ -** Revision 1.2 2003/12/05 15:55:01 f1rmb -** cleanup phase II. use xprintf when it's relevant, use xine_xmalloc when it's relevant too. Small other little fix (can't remember). Change few internal function prototype because it xine_t pointer need to be used if some xine's internal sections. NOTE: libdvd{nav,read} is still too noisy, i will take a look to made it quit, without invasive changes. To be continued... -** -** Revision 1.1 2003/01/08 07:04:35 tmmm -** initial import of Nosefart sources -** -** Revision 1.4 2000/06/09 15:12:25 matt -** initial revision -** -*/ |