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comparison romdb.c @ 1410:4cd4aa6be5f6

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Initial SRAM support for lock-on carts
author Michael Pavone <pavone@retrodev.com>
date Tue, 20 Jun 2017 22:56:07 -0700
parents b0e0bb20fc41
children 780fbe0b97be
comparison
equal deleted inserted replaced
1409:b0e0bb20fc41 1410:4cd4aa6be5f6
804 info->map[0].flags = MMAP_READ; 804 info->map[0].flags = MMAP_READ;
805 info->map[0].buffer = rom; 805 info->map[0].buffer = rom;
806 806
807 info->map[1].start = ram_start; 807 info->map[1].start = ram_start;
808 info->map[1].mask = info->save_mask; 808 info->map[1].mask = info->save_mask;
809 info->map[1].end = ram_start + info->save_size; 809 info->map[1].end = ram_start + info->save_mask + 1;
810 info->map[1].flags = MMAP_READ | MMAP_WRITE; 810 info->map[1].flags = MMAP_READ | MMAP_WRITE;
811 811
812 if (info->save_type == RAM_FLAG_ODD) { 812 if (info->save_type == RAM_FLAG_ODD) {
813 info->map[1].flags |= MMAP_ONLY_ODD; 813 info->map[1].flags |= MMAP_ONLY_ODD;
814 } else if (info->save_type == RAM_FLAG_EVEN) { 814 } else if (info->save_type == RAM_FLAG_EVEN) {
1049 if (!strcmp(dtype, "ROM")) { 1049 if (!strcmp(dtype, "ROM")) {
1050 map->buffer = state->rom + offset; 1050 map->buffer = state->rom + offset;
1051 map->flags = MMAP_READ; 1051 map->flags = MMAP_READ;
1052 map->mask = calc_mask(state->rom_size - offset, start, end); 1052 map->mask = calc_mask(state->rom_size - offset, start, end);
1053 } else if (!strcmp(dtype, "LOCK-ON")) { 1053 } else if (!strcmp(dtype, "LOCK-ON")) {
1054 map->flags = MMAP_READ;
1054 if (state->lock_on) { 1055 if (state->lock_on) {
1055 if (state->lock_on_size > offset) { 1056 if (state->lock_on_size > offset) {
1056 map->mask = calc_mask(state->lock_on_size - offset, start, end); 1057 map->mask = calc_mask(state->lock_on_size - offset, start, end);
1057 } else { 1058 } else {
1058 map->mask = calc_mask(state->lock_on_size, start, end); 1059 map->mask = calc_mask(state->lock_on_size, start, end);
1060 map->buffer = state->lock_on + (offset & (nearest_pow2(state->lock_on_size) - 1)); 1061 map->buffer = state->lock_on + (offset & (nearest_pow2(state->lock_on_size) - 1));
1061 } else if (state->rom_size > start) { 1062 } else if (state->rom_size > start) {
1062 //This is a bit of a hack to deal with pre-combined S3&K/S2&K ROMs and S&K ROM hacks 1063 //This is a bit of a hack to deal with pre-combined S3&K/S2&K ROMs and S&K ROM hacks
1063 map->buffer = state->rom + start; 1064 map->buffer = state->rom + start;
1064 map->mask = calc_mask(state->rom_size - start, start, end); 1065 map->mask = calc_mask(state->rom_size - start, start, end);
1066 if (has_ram_header(map->buffer, state->rom_size - start)) {
1067 uint32_t sram_start = read_ram_header(state->info, map->buffer);
1068
1069 state->info->map_chunks+=1;
1070 state->info->map = realloc(state->info->map, sizeof(memmap_chunk) * state->info->map_chunks);
1071 memset(state->info->map + state->info->map_chunks - 1, 0, sizeof(memmap_chunk) * 1);
1072 if (sram_start >= state->rom_size) {
1073 map = state->info->map + ++state->index;
1074 map->start = sram_start;
1075 map->mask = state->info->save_mask;
1076 map->end = sram_start + state->info->save_mask + 1;
1077 map->flags = MMAP_READ | MMAP_WRITE;
1078 if (state->info->save_type == RAM_FLAG_ODD) {
1079 map->flags |= MMAP_ONLY_ODD;
1080 } else if (state->info->save_type == RAM_FLAG_EVEN) {
1081 map->flags |= MMAP_ONLY_EVEN;
1082 }
1083 map->buffer = state->info->save_buffer;
1084 } else {
1085 map = state->info->map + state->index++;
1086 map->flags |= MMAP_CODE | MMAP_PTR_IDX | MMAP_FUNC_NULL;
1087 state->info->mapper_start_index = state->ptr_index++;
1088 map->ptr_index = state->info->mapper_start_index;
1089 map->read_16 = (read_16_fun)read_sram_w;//these will only be called when mem_pointers[ptr_idx] == NULL
1090 map->read_8 = (read_8_fun)read_sram_b;
1091 map->write_16 = (write_16_fun)write_sram_area_w;//these will be called all writes to the area
1092 map->write_8 = (write_8_fun)write_sram_area_b;
1093
1094 map = state->info->map + state->index;
1095 map->start = 0xA13000;
1096 map->end = 0xA13100;
1097 map->mask = 0xFF;
1098 map->write_16 = (write_16_fun)write_bank_reg_w;
1099 map->write_8 = (write_8_fun)write_bank_reg_b;
1100 }
1101 }
1065 } else { 1102 } else {
1066 //skip this entry if there is no lock on cartridge attached 1103 //skip this entry if there is no lock on cartridge attached
1067 return; 1104 return;
1068 } 1105 }
1069 map->flags = MMAP_READ;
1070 } else if (!strcmp(dtype, "EEPROM")) { 1106 } else if (!strcmp(dtype, "EEPROM")) {
1071 process_eeprom_def(key, state); 1107 process_eeprom_def(key, state);
1072 add_eeprom_map(node, start, end, state); 1108 add_eeprom_map(node, start, end, state);
1073 1109
1074 map->write_16 = write_eeprom_i2c_w; 1110 map->write_16 = write_eeprom_i2c_w;