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Fix bug in MED mapper protection bit implementation
author Michael Pavone <pavone@retrodev.com>
date Sun, 28 Apr 2024 23:33:11 -0700
parents fd68fe5f723e
children
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fd68fe5f723e Add support for mapper used in Super Fighter Team release of Legend of Wukong
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1 #include "genesis.h"
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2
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3 void* sft_wukong_write_b(uint32_t address, void *context, uint8_t value)
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4 {
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5 if (!(address & 1)) {
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6 return context;
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7 }
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8 m68k_context *m68k = context;
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9 genesis_context *gen = m68k->system;
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10 printf("wukong mapper write: %X - %X\n", address, value);
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11 uint16_t *old = m68k->mem_pointers[gen->mapper_start_index];
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12 if (value & 0x80) {
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13 m68k->mem_pointers[gen->mapper_start_index] = gen->cart;
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14 } else {
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15 m68k->mem_pointers[gen->mapper_start_index] = gen->cart + 1 * 1024 * 1024;
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16 }
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17 if (old != m68k->mem_pointers[gen->mapper_start_index]) {
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18 m68k_invalidate_code_range(m68k, 0x200000, 0x3C0000);
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19 }
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20
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21 return context;
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22 }
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23
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24 void* sft_wukong_write_w(uint32_t address, void *context, uint16_t value)
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25 {
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26 return sft_wukong_write_b(address | 1, context, value);
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27 }