Mercurial > repos > blastem

comparison sft_mapper.c @ 2253:fd68fe5f723e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add support for mapper used in Super Fighter Team release of Legend of Wukong
author Michael Pavone <pavone@retrodev.com>
date Mon, 12 Dec 2022 20:51:19 -0800
parents
children
comparison
equal deleted inserted replaced
2252:6a07b13894f7 2253:fd68fe5f723e
1 #include "genesis.h"
2
3 void* sft_wukong_write_b(uint32_t address, void *context, uint8_t value)
4 {
5 if (!(address & 1)) {
6 return context;
7 }
8 m68k_context *m68k = context;
9 genesis_context *gen = m68k->system;
10 printf("wukong mapper write: %X - %X\n", address, value);
11 uint16_t *old = m68k->mem_pointers[gen->mapper_start_index];
12 if (value & 0x80) {
13 m68k->mem_pointers[gen->mapper_start_index] = gen->cart;
14 } else {
15 m68k->mem_pointers[gen->mapper_start_index] = gen->cart + 1 * 1024 * 1024;
16 }
17 if (old != m68k->mem_pointers[gen->mapper_start_index]) {
18 m68k_invalidate_code_range(m68k, 0x200000, 0x3C0000);
19 }
20
21 return context;
22 }
23
24 void* sft_wukong_write_w(uint32_t address, void *context, uint16_t value)
25 {
26 return sft_wukong_write_b(address | 1, context, value);
27 }