Mercurial > repos > blastem
view multi_game.c @ 1863:d60f2d7c02a5
Differentiate between the full Sega mapper and the SRAM only one. Fixes crash on save state load for Phantasy Star IV and other games that use the same mapper
author | Michael Pavone <pavone@retrodev.com> |
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date | Tue, 14 May 2019 23:20:35 -0700 |
parents | adb62000d296 |
children | d74d3998482c |
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#include "genesis.h" void *write_multi_game_b(uint32_t address, void *vcontext, uint8_t value) { m68k_context *context = vcontext; genesis_context *gen = context->system; gen->bank_regs[0] = address; uint32_t base = (address & 0x3F) << 16, start = 0, end = 0x400000; //find the memmap chunk, so we can properly mask the base value for (int i = 0; i < context->options->gen.memmap_chunks; i++) { if (context->options->gen.memmap[i].flags & MMAP_PTR_IDX) { base &= context->options->gen.memmap[i].mask; start = context->options->gen.memmap[i].start; end = context->options->gen.memmap[i].end; break; } } context->mem_pointers[gen->mapper_start_index] = gen->cart + base/2; m68k_invalidate_code_range(context, start, end); return vcontext; } void *write_multi_game_w(uint32_t address, void *context, uint16_t value) { return write_multi_game_b(address, context, value); } void multi_game_serialize(genesis_context *gen, serialize_buffer *buf) { save_int8(buf, gen->bank_regs[0]); } void multi_game_deserialize(deserialize_buffer *buf, genesis_context *gen) { write_multi_game_b(load_int8(buf), gen->m68k, 0); }