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annotate lc8951.h @ 2071:598017ef4b0d segacd

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Fix a few sega cd graphics processor bugs
author Michael Pavone <pavone@retrodev.com>
date Sun, 30 Jan 2022 22:29:04 -0800
parents f22e04b69272
children 28b6453cf7e3
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2058
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1 #ifndef LC8951_H_
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2 #define LC8951_H_
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3
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4 #include <stdint.h>
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5
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6 typedef uint8_t (*lcd8951_byte_recv_fun)(void *data, uint8_t byte);
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7
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8 typedef struct {
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9 lcd8951_byte_recv_fun byte_handler;
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10 void *handler_data;
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11 uint32_t cycle;
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12 uint32_t clock_step;
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13 uint32_t decode_end;
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14 uint32_t transfer_end;
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15
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16 uint8_t buffer[0x4000];
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18 uint8_t regs[16];
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19 uint8_t comin[8];
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20
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21 uint16_t dac;
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22 uint8_t comin_write;
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23 uint8_t comin_count;
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24 uint8_t ifctrl;
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25 uint8_t ctrl0;
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26 uint8_t ctrl1;
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27 uint8_t ar;
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28 uint8_t ar_mask;
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29 } lc8951;
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30
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31 void lc8951_init(lc8951 *context, lcd8951_byte_recv_fun byte_handler, void *handler_data);
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32 void lc8951_run(lc8951 *context, uint32_t cycle);
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33 void lc8951_reg_write(lc8951 *context, uint8_t value);
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34 uint8_t lc8951_reg_read(lc8951 *context);
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35 void lc8951_ar_write(lc8951 *context, uint8_t value);
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36 void lc8951_write_byte(lc8951 *context, uint32_t cycle, int sector_offset, uint8_t byte);
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37 uint32_t lc8951_next_interrupt(lc8951 *context);
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38 void lc8951_resume_transfer(lc8951 *context, uint32_t cycle);
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39 void lc8951_adjust_cycles(lc8951 *context, uint32_t deduction);
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40
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41 #endif //LC8951_H_