diff options
Diffstat (limited to 'contrib/nosefart/nes6502.h')
| -rw-r--r-- | contrib/nosefart/nes6502.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/contrib/nosefart/nes6502.h b/contrib/nosefart/nes6502.h index 9b9be5811..8713304ec 100644 --- a/contrib/nosefart/nes6502.h +++ b/contrib/nosefart/nes6502.h @@ -23,6 +23,9 @@ ** $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 */ @@ -47,6 +50,17 @@ #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 @@ -87,7 +101,10 @@ typedef struct typedef struct { - uint8 *mem_page[NES6502_NUMBANKS]; /* memory page pointers */ + 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; @@ -110,6 +127,12 @@ 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); |