Mercurial > repos > blastem
diff multi_game.c @ 1416:11ac0b511cff
Support a couple of bootleg X-in-1 carts
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Sat, 24 Jun 2017 13:55:54 -0700 |
parents | |
children | 14a2834d010c |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/multi_game.c Sat Jun 24 13:55:54 2017 -0700 @@ -0,0 +1,26 @@ +#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; + 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); +}