Mercurial > repos > blastem

annotate lc8951.h @ 2496:187bc857a76a default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix bug in MED mapper protection bit implementation
author Michael Pavone <pavone@retrodev.com>
date Sun, 28 Apr 2024 23:33:11 -0700
parents f8b5142c06aa
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
1 #ifndef LC8951_H_
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
2 #define LC8951_H_
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
3
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
4 #include <stdint.h>
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2231
diff changeset
5 #include "serialize.h"
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
6
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
7 typedef uint8_t (*lcd8951_byte_recv_fun)(void *data, uint8_t byte);
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
8
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
9 typedef struct {
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
10 lcd8951_byte_recv_fun byte_handler;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
11 void *handler_data;
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
diff changeset
12 uint32_t cycle;
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
diff changeset
13 uint32_t clock_step;
2144
10e4439d8f13 Fix speed of CDC to PCM RAM DMA
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
14 uint32_t cycles_per_byte;
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
diff changeset
15 uint32_t decode_end;
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
diff changeset
16 uint32_t transfer_end;
2144
10e4439d8f13 Fix speed of CDC to PCM RAM DMA
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
17 uint32_t next_byte_cycle;
2130
28b6453cf7e3 Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
18 uint16_t sector_counter;
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
19
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
20 uint8_t buffer[0x4000];
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
21
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
22 uint8_t regs[16];
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
23 uint8_t comin[8];
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
24
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
25 uint16_t dac;
2342
9f0c67e5c50a Implement CD-ROM data sector scrambling/descrambling
Michael Pavone <pavone@retrodev.com>
parents: 2280
diff changeset
26 uint16_t scrambler_lsfr;
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
27 uint8_t comin_write;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
28 uint8_t comin_count;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
29 uint8_t ifctrl;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
30 uint8_t ctrl0;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
31 uint8_t ctrl1;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
32 uint8_t ar;
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
33 uint8_t ar_mask;
2231
8e6fb2c06024 Fix CDC transfer regression
Michael Pavone <pavone@retrodev.com>
parents: 2144
diff changeset
34 uint8_t triggered;
2130
28b6453cf7e3 Emulate CDC sync detection and sync insertion rather than relying on external knowledge about sector offset
Michael Pavone <pavone@retrodev.com>
parents: 2067
diff changeset
35 uint8_t sync_counter;
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
36 } lc8951;
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
37
2065
02a9846668d1 Implement transfer of data from CDC to elsewhere. Other miscellaneous CDD/CDC improvements
Michael Pavone <pavone@retrodev.com>
parents: 2062
diff changeset
38 void lc8951_init(lc8951 *context, lcd8951_byte_recv_fun byte_handler, void *handler_data);
2144
10e4439d8f13 Fix speed of CDC to PCM RAM DMA
Michael Pavone <pavone@retrodev.com>
parents: 2130
diff changeset
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
diff changeset
40 void lc8951_run(lc8951 *context, uint32_t cycle);
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
41 void lc8951_reg_write(lc8951 *context, uint8_t value);
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
42 uint8_t lc8951_reg_read(lc8951 *context);
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
43 void lc8951_ar_write(lc8951 *context, uint8_t value);
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
diff changeset
44 void lc8951_write_byte(lc8951 *context, uint32_t cycle, int sector_offset, uint8_t byte);
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
diff changeset
45 uint32_t lc8951_next_interrupt(lc8951 *context);
2350
f8b5142c06aa 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
Michael Pavone <pavone@retrodev.com>
parents: 2342
diff changeset
46 void lc8951_resume_transfer(lc8951 *context);
2066
a61a8a87410c Fix a bunch of CDC/CDD related mcd-verificator failures
Michael Pavone <pavone@retrodev.com>
parents: 2065
diff changeset
47 void lc8951_adjust_cycles(lc8951 *context, uint32_t deduction);
2280
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2231
diff changeset
48 void lc8951_serialize(lc8951 *context, serialize_buffer *buf);
9ead0fe69d9b Implement savestate support for Sega CD
Michael Pavone <pavone@retrodev.com>
parents: 2231
diff changeset
49 void lc8951_deserialize(deserialize_buffer *buf, void *vcontext);
2058
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
50
70260f6051dd Initial work on CDC emulation
Michael Pavone <pavone@retrodev.com>
parents:
diff changeset
51 #endif //LC8951_H_