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annotate multi_game.c @ 1483:001120e91fed nuklear_ui

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Skip loading menu ROM if Nuklear UI is enabled. Allow disabling Nuklear UI in favor of old menu ROM both at compile time and in config. Fall back to ROM UI if GL is unavailable
author Michael Pavone <pavone@retrodev.com>
date Sat, 25 Nov 2017 20:43:20 -0800
parents adb62000d296
children d74d3998482c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "genesis.h"
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2
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3 void *write_multi_game_b(uint32_t address, void *vcontext, uint8_t value)
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4 {
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5 m68k_context *context = vcontext;
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6 genesis_context *gen = context->system;
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7 gen->bank_regs[0] = address;
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8 uint32_t base = (address & 0x3F) << 16, start = 0, end = 0x400000;
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9 //find the memmap chunk, so we can properly mask the base value
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10 for (int i = 0; i < context->options->gen.memmap_chunks; i++)
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11 {
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12 if (context->options->gen.memmap[i].flags & MMAP_PTR_IDX) {
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13 base &= context->options->gen.memmap[i].mask;
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14 start = context->options->gen.memmap[i].start;
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15 end = context->options->gen.memmap[i].end;
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16 break;
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17 }
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18 }
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19 context->mem_pointers[gen->mapper_start_index] = gen->cart + base/2;
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20 m68k_invalidate_code_range(context, start, end);
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21 return vcontext;
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22 }
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23
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24 void *write_multi_game_w(uint32_t address, void *context, uint16_t value)
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25 {
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26 return write_multi_game_b(address, context, value);
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27 }
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29 void multi_game_serialize(genesis_context *gen, serialize_buffer *buf)
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30 {
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31 save_int8(buf, gen->bank_regs[0]);
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32 }
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33
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34 void multi_game_deserialize(deserialize_buffer *buf, genesis_context *gen)
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35 {
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36 write_multi_game_b(load_int8(buf), gen->m68k, 0);
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37 }