110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
//////////////////////////////////////////////////////////////////////////////////
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// 本程序移植自网友ye781205的NES模拟器工程
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// ALIENTEK STM32F407开发板
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// NES MAP 驱动代码
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// 正点原子@ALIENTEK
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// 技术论坛:www.openedv.com
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// 创建日期:2014/7/1
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// 版本：V1.0
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//////////////////////////////////////////////////////////////////////////////////
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#ifndef __NES_MAPPER_H
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#define __NES_MAPPER_H
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#include "stdint.h"
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#define num_8k_ROM_banks VROM_8K_SIZE
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#define num_1k_VROM_banks VROM_1K_SIZE
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typedef struct {
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void (*Reset)();
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void (*Write)(uint16_t addr, uint8_t data);
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void (*Read)(uint8_t data, uint16_t addr);
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uint8_t (*ReadLow)(uint16_t addr);
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void (*WriteLow)(uint16_t addr, uint8_t data);
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void (*HSync)(int scanline);
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void (*VSync)(void);
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} MAPPER;
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typedef enum { MMC1_SMALL, MMC1_512K, MMC1_1024K } MMC1_Size_t;
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typedef struct {
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uint32_t write_count;
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uint8_t bits;
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uint8_t regs[4];
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uint32_t last_write_addr;
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MMC1_Size_t MMC1_Size;
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uint32_t MMC1_256K_base;
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uint32_t MMC1_swap;
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// these are the 4 ROM banks currently selected
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uint32_t MMC1_bank1;
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uint32_t MMC1_bank2;
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uint32_t MMC1_bank3;
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uint32_t MMC1_bank4;
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uint32_t MMC1_HI1;
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uint32_t MMC1_HI2;
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} Mapper1Res;
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// 通用map变量结构体
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typedef struct {
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uint8_t patch;
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uint8_t regs[11];
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uint32_t prg0, prg1;
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uint32_t chr01, chr23, chr4, chr5, chr6, chr7;
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uint8_t irq_enabled; // IRQs enabled
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uint32_t irq_counter; // IRQ scanline counter, decreasing
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uint32_t irq_latch; // IRQ scanline counter latch
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} MapperCommRes;
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extern uint32_t ROM_mask;
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extern uint32_t VROM_mask;
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extern const int MapTab[];
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extern MAPPER *NES_Mapper;
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extern uint32_t VROM_mask;
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extern Mapper1Res *MAP1;
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extern MapperCommRes *MAPx;
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//////////////////////////////////////////////////////////////////////////////////
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void Mapper_Init(void);
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void asm_Mapper_Write(uint8_t byData, uint16_t wAddr);
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void asm_Mapper_ReadLow(uint16_t wAddr);
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void asm_Mapper_WriteLow(uint8_t byData, uint16_t wAddr);
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void map67_(signed char page); // 6502.s
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void map89_(signed char page);
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void mapAB_(signed char page);
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void mapCD_(signed char page);
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void mapEF_(signed char page); // 有符号字符
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void set_CPU_bank3(signed char page);
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void set_CPU_bank4(signed char page);
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void set_CPU_bank5(signed char page);
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void set_CPU_bank6(signed char page);
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void set_CPU_bank7(signed char page);
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void set_CPU_banks(int bank0_num, int bank1_num, int bank2_num, int bank3_num);
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void set_PPU_banks(uint32_t bank0_num, uint32_t bank1_num, uint32_t bank2_num,
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uint32_t bank3_num, uint32_t bank4_num, uint32_t bank5_num,
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uint32_t bank6_num, uint32_t bank7_num);
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void set_PPU_bank0(uint32_t bank_num);
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void set_PPU_bank1(uint32_t bank_num);
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void set_PPU_bank2(uint32_t bank_num);
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void set_PPU_bank3(uint32_t bank_num);
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void set_PPU_bank4(uint32_t bank_num);
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void set_PPU_bank5(uint32_t bank_num);
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void set_PPU_bank6(uint32_t bank_num);
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void set_PPU_bank7(uint32_t bank_num);
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void set_PPU_bank8(uint32_t bank_num);
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void set_PPU_bank9(uint32_t bank_num);
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void set_PPU_bank10(uint32_t bank_num);
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void set_PPU_bank11(uint32_t bank_num);
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void set_VRAM_bank(uint8_t bank, uint32_t bank_num);
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#endif
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