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https://github.com/andwati/mos-6502.git
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andwati
0dcd2ed687
- Added `state.c` to handle saving and loading the state of the CPU and Bus. - Implemented CRC32 checksum for data integrity verification during state operations. - Enhanced `README.md` in tests/roms to document new test commands for decimal, interrupt, Apple I, and nestest. - Created new test files: `run_apple1.c`, `run_decimal.c`, `run_interrupt.c`, `run_nestest.c`, and `run_vectors.c` to validate the new features. - Updated `run_tests.c` to include tests for state saving/loading and other functionalities. - Introduced `test_vectors.py` to facilitate downloading and running JSON test vectors for opcode verification.
29 lines
1023 B
C
29 lines
1023 B
C
#ifndef NES_H
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#define NES_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "bus.h"
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#include "cpu.h"
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typedef struct {
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uint8_t prg[512*1024],chr[256*1024],ram[2048],prg_ram[8192];
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uint8_t nametable[4096],palette[32],oam[256];
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size_t prg_size,chr_size;uint8_t mapper,prg_bank,chr_bank,mirroring;bool chr_ram;
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uint8_t ppu_ctrl,ppu_mask,ppu_status,oam_addr,ppu_latch,read_buffer;
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uint8_t scroll_x,scroll_y;
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uint16_t ppu_addr;unsigned ppu_dot,ppu_scanline;bool frame_ready;
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uint8_t controller,controller_shift;bool controller_strobe;
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uint8_t apu_reg[0x18],apu_status;uint64_t apu_cycles;
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double pulse_phase[2],triangle_phase,noise_phase;uint16_t noise_lfsr;
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Bus6502 bus;CPU6502 cpu;
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} NES;
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int nes_load(NES *nes,const char *path);
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void nes_reset(NES *nes);
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cpu_step_result_t nes_step(NES *nes);
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void nes_set_controller(NES *nes,uint8_t buttons);
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void nes_render_frame(NES *nes,uint32_t pixels[256*240]);
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float nes_audio_sample(NES *nes,double sample_rate);
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#endif
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