Mercurial > repos > blastem
annotate lc8951.h @ 2389:66b3f2eda0c8
Fix regression in savestate loading
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 24 Nov 2023 14:44:01 -0800 |
parents | f8b5142c06aa |
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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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Implement savestate support for Sega CD
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5 #include "serialize.h" |
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6 |
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Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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7 typedef uint8_t (*lcd8951_byte_recv_fun)(void *data, uint8_t byte); |
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8 |
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9 typedef struct { |
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10 lcd8951_byte_recv_fun byte_handler; |
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11 void *handler_data; |
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07ed42bd7b4c
Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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12 uint32_t cycle; |
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Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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13 uint32_t clock_step; |
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Fix speed of CDC to PCM RAM DMA
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14 uint32_t cycles_per_byte; |
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15 uint32_t decode_end; |
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Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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16 uint32_t transfer_end; |
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17 uint32_t next_byte_cycle; |
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Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset
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18 uint16_t sector_counter; |
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19 |
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20 uint8_t buffer[0x4000]; |
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21 |
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22 uint8_t regs[16]; |
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23 uint8_t comin[8]; |
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24 |
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25 uint16_t dac; |
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Implement CD-ROM data sector scrambling/descrambling
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26 uint16_t scrambler_lsfr; |
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27 uint8_t comin_write; |
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28 uint8_t comin_count; |
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29 uint8_t ifctrl; |
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30 uint8_t ctrl0; |
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31 uint8_t ctrl1; |
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32 uint8_t ar; |
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33 uint8_t ar_mask; |
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34 uint8_t triggered; |
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Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset
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35 uint8_t sync_counter; |
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36 } lc8951; |
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37 |
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Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
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parents:
2062
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38 void lc8951_init(lc8951 *context, lcd8951_byte_recv_fun byte_handler, void *handler_data); |
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39 void lc8951_set_dma_multiple(lc8951 *context, uint32_t multiple); |
2062
07ed42bd7b4c
Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents:
2058
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40 void lc8951_run(lc8951 *context, uint32_t cycle); |
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41 void lc8951_reg_write(lc8951 *context, uint8_t value); |
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42 uint8_t lc8951_reg_read(lc8951 *context); |
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43 void lc8951_ar_write(lc8951 *context, uint8_t value); |
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07ed42bd7b4c
Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
Michael Pavone <pavone@retrodev.com>
parents:
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44 void lc8951_write_byte(lc8951 *context, uint32_t cycle, int sector_offset, uint8_t byte); |
07ed42bd7b4c
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Michael Pavone <pavone@retrodev.com>
parents:
2058
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45 uint32_t lc8951_next_interrupt(lc8951 *context); |
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Allow 68K to return mid-instruction. Adjust how 68K interrupt ack works so int2 busy flag timing is more correct. Fix some other SCD timing issues
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46 void lc8951_resume_transfer(lc8951 *context); |
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Fix a bunch of CDC/CDD related mcd-verificator failures
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47 void lc8951_adjust_cycles(lc8951 *context, uint32_t deduction); |
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48 void lc8951_serialize(lc8951 *context, serialize_buffer *buf); |
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49 void lc8951_deserialize(deserialize_buffer *buf, void *vcontext); |
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50 |
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51 #endif //LC8951_H_ |