mirror of
https://github.com/wavemotion-dave/NINTV-DS.git
synced 2025-06-18 13:55:33 -04:00
637 lines
24 KiB
C++
637 lines
24 KiB
C++
// =====================================================================================
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// Copyright (c) 2021-2023 Dave Bernazzani (wavemotion-dave)
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//
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// Copying and distribution of this emulator, its source code and associated
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// readme files, with or without modification, are permitted in any medium without
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// royalty provided the this copyright notice is used and wavemotion-dave (NINTV-DS)
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// and Kyle Davis (BLISS) are thanked profusely.
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//
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// The NINTV-DS emulator is offered as-is, without any warranty.
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// =====================================================================================
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#include <stdlib.h>
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#include <stdio.h>
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#include "Rip.h"
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#include "RAM.h"
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#include "ROM.h"
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#include "ROMBanker.h"
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#include "JLP.h"
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#include "Memory.h"
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#include "CRC32.h"
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#include "../database.h"
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#include "../ds_tools.h"
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#include "../loadgame.h"
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#define ROM_TAG_TITLE 0x01
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#define ROM_TAG_PUBLISHER 0x02
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#define ROM_TAG_RELEASE_DATE 0x05
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#define ROM_TAG_COMPATIBILITY 0x06
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UINT8 tag_compatibility[8] = {0};
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extern UINT8 *bin_image_buf;
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extern UINT16 *bin_image_buf16;
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/* ======================================================================== */
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/* CRC16_TBL -- Lookup table used for the CRC-16 code. */
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/* ======================================================================== */
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const uint16_t crc16_tbl[256] =
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{
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0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7,
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0x8108, 0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF,
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0x1231, 0x0210, 0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6,
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0x9339, 0x8318, 0xB37B, 0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE,
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0x2462, 0x3443, 0x0420, 0x1401, 0x64E6, 0x74C7, 0x44A4, 0x5485,
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0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE, 0xF5CF, 0xC5AC, 0xD58D,
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0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6, 0x5695, 0x46B4,
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0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D, 0xC7BC,
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0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
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0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B,
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0x5AF5, 0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12,
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0xDBFD, 0xCBDC, 0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A,
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0x6CA6, 0x7C87, 0x4CE4, 0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41,
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0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD, 0xAD2A, 0xBD0B, 0x8D68, 0x9D49,
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0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13, 0x2E32, 0x1E51, 0x0E70,
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0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A, 0x9F59, 0x8F78,
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0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E, 0xE16F,
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0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
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0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E,
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0x02B1, 0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256,
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0xB5EA, 0xA5CB, 0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D,
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0x34E2, 0x24C3, 0x14A0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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0xA7DB, 0xB7FA, 0x8799, 0x97B8, 0xE75F, 0xF77E, 0xC71D, 0xD73C,
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0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657, 0x7676, 0x4615, 0x5634,
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0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9, 0xB98A, 0xA9AB,
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0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882, 0x28A3,
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0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
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0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92,
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0xFD2E, 0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9,
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0x7C26, 0x6C07, 0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1,
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0xEF1F, 0xFF3E, 0xCF5D, 0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8,
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0x6E17, 0x7E36, 0x4E55, 0x5E74, 0x2E93, 0x3EB2, 0x0ED1, 0x1EF0
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};
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/* ======================================================================== */
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/* CRC16_UPDATE -- Updates a 16-bit CRC using the lookup table above. */
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/* Note: The 16-bit CRC is set up as a left-shifting */
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/* CRC with no inversions. */
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/* ======================================================================== */
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uint16_t crc16_update(uint16_t crc, uint8_t data)
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{
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return (crc << 8) ^ crc16_tbl[(crc >> 8) ^ data];
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}
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Rip::Rip(UINT32 systemID)
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: Peripheral("", ""),
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peripheralCount(0),
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targetSystemID(systemID),
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crc(0)
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{
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memset(filename, 0, sizeof(filename));
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JLP16Bit = NULL;
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}
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Rip::~Rip()
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{
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UINT16 count = GetROMCount();
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for (UINT16 i = 0; i < count; i++)
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delete GetROM(i);
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if (JLP16Bit) delete JLP16Bit;
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}
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void Rip::SetName(const CHAR* n)
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{
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strcpy(peripheralName, n);
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}
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void Rip::AddPeripheralUsage(const CHAR* periphName, PeripheralCompatibility usage)
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{
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strcpy(peripheralNames[peripheralCount], periphName);
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peripheralUsages[peripheralCount] = usage;
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peripheralCount++;
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}
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PeripheralCompatibility Rip::GetPeripheralUsage(const CHAR* periphName)
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{
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for (UINT16 i = 0; i < peripheralCount; i++) {
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if (strcmpi(peripheralNames[i], periphName) == 0)
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return peripheralUsages[i];
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}
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return PERIPH_INCOMPATIBLE;
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}
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char cfgFilename[128];
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Rip* Rip::LoadBin(const CHAR* filename)
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{
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// Create the path to the .cfg file (which may or may not exist...)
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strcpy(cfgFilename, filename);
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cfgFilename[strlen(cfgFilename)-4] = 0;
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strcat(cfgFilename, ".cfg");
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// Open the binary file - we will read it all in...
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FILE* file = fopen(filename, "rb");
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if (file == NULL)
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{
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FatalError("BIN FILE DOES NOT EXIST");
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return NULL;
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}
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//obtain the file size
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fseek(file, 0, SEEK_END);
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size_t size = ftell(file);
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rewind(file);
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if (size >= MAX_ROM_FILE_SIZE)
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{
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fclose(file);
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FatalError("BIN FILE TOO LARGE");
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return NULL;
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}
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// Read the file into our memory buffer - we can process it from there...
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fread(bin_image_buf, size, 1, file);
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fclose(file);
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//determine the crc of the designated file
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UINT32 crc = CRC32::getCrc(bin_image_buf, size);
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// ----------------------------------------------------------------
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// Now go and try and load all the memory regions based on either
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// the internal database table or the .cfg file if it exists...
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// ----------------------------------------------------------------
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Rip* rip = LoadBinCfg(cfgFilename, crc);
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if (rip == NULL)
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{
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FatalError("UNABLE TO CREATE RIP");
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return NULL;
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}
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//parse the file bin_image_buf[] into the rip
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UINT32 offset = 0;
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UINT16 romCount = rip->GetROMCount();
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for (UINT16 i = 0; i < romCount; i++)
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{
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if (offset >= size)
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{
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// -------------------------------------------------------------------------------
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// Something is wrong, the file we're trying to load isn't large enough getting
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// here indicates a likely incorrect memory map in the database or the .cfg file
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// -------------------------------------------------------------------------------
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delete rip;
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FatalError("BAD MEMORY MAP");
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return NULL;
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}
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ROM* nextRom = rip->GetROM(i);
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nextRom->load(bin_image_buf+offset);
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offset += nextRom->getByteWidth() * nextRom->getReadSize();
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}
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// --------------------------------------------------------------
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// If the user asked for a specific combination of hardware...
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// --------------------------------------------------------------
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if (load_options)
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{
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bUseECS = 0;
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bUseJLP = 0;
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bUseIVoice = 0;
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if ((load_options & LOAD_WITH_JLP) == LOAD_WITH_JLP) bUseJLP = 1;
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if ((load_options & LOAD_WITH_ECS) == LOAD_WITH_ECS) bUseECS = 1;
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if ((load_options & LOAD_WITH_IVOICE) == LOAD_WITH_IVOICE) bUseIVoice = 1;
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}
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// Add the JLP RAM module if required...
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if (bUseJLP)
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{
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rip->JLP16Bit = new JLP();
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rip->AddRAM(rip->JLP16Bit);
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}
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else
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{
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rip->JLP16Bit = NULL;
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}
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// Add the Intellivoice if required...
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if (bUseIVoice) rip->AddPeripheralUsage("Intellivoice", (bUseIVoice == 3) ? PERIPH_OPTIONAL:PERIPH_REQUIRED);
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// Add the ECS module if required...
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if (bUseECS) rip->AddPeripheralUsage("ECS", (bUseECS == 3) ? PERIPH_OPTIONAL:PERIPH_REQUIRED);
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rip->SetFileName(filename);
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rip->crc = CRC32::getCrc(filename);
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rip->mySize = size;
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return rip;
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}
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Rip* Rip::LoadBinCfg(const CHAR* configFile, UINT32 crc)
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{
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Rip* rip = NULL;
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const struct Database_t *db_entry = FindDatabaseEntry(crc); // Try to find the CRC in our internal database...
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if (db_entry != NULL) // We found an entry... let's go!
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{
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rip = new Rip(ID_SYSTEM_INTELLIVISION);
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rip->JLP16Bit = NULL;
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rip->SetName(db_entry->name);
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for (UINT8 i=0; i<MAX_MEM_AREAS; i++)
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{
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switch (db_entry->mem_areas[i].mem_type)
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{
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case DB_ROM8:
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{
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rip->AddROM(new ROM("Cartridge ROM", "", 0, sizeof(UINT8), db_entry->mem_areas[i].mem_size, db_entry->mem_areas[i].mem_addr));
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break;
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}
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case DB_ROM16:
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{
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rip->AddROM(new ROM("Cartridge ROM", "", 0, sizeof(UINT16), db_entry->mem_areas[i].mem_size, db_entry->mem_areas[i].mem_addr));
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break;
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}
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case DB_R16B0:
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{
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ROM *bankedROM = new ROM("Cartridge ROM", "", 0, sizeof(UINT16), db_entry->mem_areas[i].mem_size, db_entry->mem_areas[i].mem_addr);
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bankedROM->SetEnabled(true);
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rip->AddROM(bankedROM);
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rip->AddRAM(new ROMBanker(bankedROM, db_entry->mem_areas[i].mem_addr+0xFFF, 0xFFF0, db_entry->mem_areas[i].mem_addr+0xA50, 0x000F, 0));
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break;
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}
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case DB_R16B1:
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{
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ROM *bankedROM = new ROM("Cartridge ROM", "", 0, sizeof(UINT16), db_entry->mem_areas[i].mem_size, db_entry->mem_areas[i].mem_addr);
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bankedROM->SetEnabled(false);
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rip->AddROM(bankedROM);
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rip->AddRAM(new ROMBanker(bankedROM, db_entry->mem_areas[i].mem_addr+0xFFF, 0xFFF0, db_entry->mem_areas[i].mem_addr+0xA50, 0x000F, 1));
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break;
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}
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case DB_RAM8:
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{
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rip->AddRAM(new RAM(db_entry->mem_areas[i].mem_size, db_entry->mem_areas[i].mem_addr, 0xFFFF, 0xFFFF, 8));
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break;
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}
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case DB_RAM16:
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{
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rip->AddRAM(new RAM(db_entry->mem_areas[i].mem_size, db_entry->mem_areas[i].mem_addr, 0xFFFF, 0xFFFF, 16));
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break;
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}
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default:
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break;
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}
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}
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// Now add the required peripherals...
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if (db_entry->bIntellivoice)
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{
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if ((db_entry->game_crc == 0xC2063C08) && !isDSiMode())
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{
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// Skip Intellivoice for World Series of Baseball on the DS-LITE
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}
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else
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{
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bUseIVoice = db_entry->bIntellivoice;
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}
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}
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if (db_entry->bECS)
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{
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bUseECS = db_entry->bECS;
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}
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if (db_entry->bJLP)
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{
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bUseJLP = db_entry->bJLP;
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}
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}
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else // Didn't find it... let's see if we can read a .cfg file
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{
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FILE* cfgFile = fopen(configFile, "r");
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if (cfgFile != NULL)
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{
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rip = new Rip(ID_SYSTEM_INTELLIVISION);
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rip->JLP16Bit = NULL;
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CHAR nextLine[128];
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int cfg_mode=0;
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while (!feof(cfgFile))
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{
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if (fgets(nextLine, 127, cfgFile) != NULL)
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{
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if (strstr(nextLine, "[mapping]") != NULL) cfg_mode = 1;
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else if (strstr(nextLine, "[memattr]") != NULL) cfg_mode = 2;
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else if (strstr(nextLine, "[vars]") != NULL) cfg_mode = 3;
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else
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{
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char *ptr = nextLine;
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while ((*ptr == ' ') || (*ptr == '\t')) ptr++;
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if (cfg_mode == 1) // [mapping] Mode
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{
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if (*ptr == '$')
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{
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ptr++;
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UINT16 start_addr = strtoul(ptr, &ptr, 16);
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while (*ptr == ' ' || *ptr == '\t' || *ptr == '-' || *ptr == '$') ptr++;
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UINT16 end_addr = strtoul(ptr, &ptr, 16);
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while (*ptr == ' ' || *ptr == '\t' || *ptr == '=' || *ptr == '$') ptr++;
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UINT16 map_addr = strtoul(ptr, &ptr, 16);
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ROM *newROM = new ROM("Cartridge ROM", "", 0, sizeof(UINT16), (UINT16)((end_addr-start_addr) + 1), map_addr);
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while (*ptr == ' ' || *ptr == '\t' || *ptr == '=' || *ptr == '$') ptr++;
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if (strstr(ptr, "PAGE") != NULL)
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{
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ptr+=5;
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UINT16 page = (UINT16)strtoul(ptr, &ptr, 16) & 0xf;
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if (page == 0) newROM->SetEnabled(true); else newROM->SetEnabled(false);
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rip->AddROM(newROM);
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rip->AddRAM(new ROMBanker(newROM, (map_addr&0xF000)+0xFFF, 0xFFF0, (map_addr&0xF000)+0xA50, 0x000F, page));
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}
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else rip->AddROM(newROM);
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}
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}
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if (cfg_mode == 2) // [memattr] Mode
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{
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if (*ptr == '$')
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{
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ptr++;
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UINT16 start_addr = strtoul(ptr, &ptr, 16);
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while (*ptr == ' ' || *ptr == '\t' || *ptr == '-' || *ptr == '$') ptr++;
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UINT16 end_addr = strtoul(ptr, &ptr, 16);
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if (strstr(ptr, "RAM 8") != NULL)
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{
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rip->AddRAM(new RAM((UINT16)((end_addr-start_addr) + 1), start_addr, 0xFFFF, 0xFFFF, 8));
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}
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else if (strstr(ptr, "RAM 16") != NULL)
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{
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rip->AddRAM(new RAM((UINT16)((end_addr-start_addr) + 1), start_addr, 0xFFFF, 0xFFFF, 16));
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}
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}
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}
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if (cfg_mode == 3) // [vars] Mode
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{
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if (strstr(ptr, "jlp"))
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{
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bUseJLP = 1;
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}
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if (strstr(ptr, "voice"))
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{
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bUseIVoice = 1;
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}
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if (strstr(ptr, "ecs"))
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{
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bUseECS = 1;
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}
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}
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// ------------------------------------------------------------------------
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// Make sure we haven't exceeded the maximum number of mapped ROM segments
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// ------------------------------------------------------------------------
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if (rip->GetRAMCount() >= MAX_ROMS) break;
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if (rip->GetROMCount() >= MAX_ROMS) break;
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}
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}
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}
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fclose(cfgFile);
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}
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}
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return rip;
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}
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Rip* Rip::LoadRom(const CHAR* filename)
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{
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static char tmp_buf[64];
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u16 crc16;
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FILE* infile = fopen(filename, "rb");
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if (infile == NULL)
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{
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FatalError("ROM FILE NOT FOUND");
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return NULL;
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}
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//obtain the file size
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fseek(infile, 0, SEEK_END);
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size_t size = ftell(infile);
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rewind(infile);
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if (size >= MAX_ROM_FILE_SIZE)
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{
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fclose(infile);
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FatalError("ROM FILE TOO LARGE");
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return NULL;
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}
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//read the magic byte (should always be $A8 or $41 or $61)
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int read = fgetc(infile);
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if ((read != 0xA8) && (read != 0x41) && (read != 0x61))
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{
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fclose(infile);
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FatalError("ROM MAGIC BYTE MISSING");
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return NULL;
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}
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//read the number of ROM segments
|
|
int romSegmentCount = fgetc(infile);
|
|
read = fgetc(infile);
|
|
if ((read ^ 0xFF) != romSegmentCount)
|
|
{
|
|
FatalError("ROM SEGMENT COUNT INVALID");
|
|
fclose(infile);
|
|
return NULL;
|
|
}
|
|
|
|
memset(tag_compatibility, 0x00, sizeof(tag_compatibility));
|
|
|
|
Rip* rip = new Rip(ID_SYSTEM_INTELLIVISION);
|
|
|
|
// ----------------------------------------------------------------
|
|
// Read through the .ROM and parse out all of the rom segments...
|
|
// ----------------------------------------------------------------
|
|
int i;
|
|
for (i = 0; i < romSegmentCount; i++)
|
|
{
|
|
read = fgetc(infile);
|
|
u16 calcCrc16 = crc16_update(0xFFFF, read);
|
|
UINT16 start = (UINT16)(read << 8);
|
|
read = fgetc(infile);
|
|
calcCrc16 = crc16_update(calcCrc16, read);
|
|
UINT16 end = (UINT16)((read << 8) | 0xFF);
|
|
UINT16 size = (UINT16)((end-start)+1);
|
|
|
|
//finally, transfer the ROM image to our binary buffer
|
|
UINT16* romImage = (UINT16*)bin_image_buf16;
|
|
int j;
|
|
for (j = 0; j < size; j++)
|
|
{
|
|
int hi = fgetc(infile);
|
|
int lo = fgetc(infile);
|
|
calcCrc16 = crc16_update(calcCrc16, hi);
|
|
calcCrc16 = crc16_update(calcCrc16, lo);
|
|
int nextbyte = (hi << 8) | lo;
|
|
romImage[j] = (UINT16)nextbyte;
|
|
}
|
|
|
|
//read the CRC
|
|
crc16 = (fgetc(infile) << 8) | fgetc(infile);
|
|
|
|
// Validate the CRC to make sure this ROM segment has integrity...
|
|
if (calcCrc16 == crc16)
|
|
{
|
|
// And finally, add this rom segment to our RIP...
|
|
rip->AddROM(new ROM("Cartridge ROM", romImage, 2, size, start, 0xFFFF));
|
|
}
|
|
else
|
|
{
|
|
FatalError("ROM SEGMENT INTEGRITY FAIL");
|
|
fclose(infile);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
// Now skip over the enable tables. These have a well-defined and fixed size and we don't use them.s
|
|
for (i = 0; i < 50; i++)
|
|
{
|
|
fgetc(infile);
|
|
}
|
|
|
|
// Read through the rest of the .ROM and look for tags...
|
|
while ((read = fgetc(infile)) != -1)
|
|
{
|
|
u16 calcCrc16 = crc16_update(0xFFFF, read);
|
|
u16 length = (read & 0x3F);
|
|
read = (read & 0xC) >> 6;
|
|
for (i = 0; i < read; i++)
|
|
{
|
|
u8 read2 = fgetc(infile);
|
|
calcCrc16 = crc16_update(calcCrc16, read2);
|
|
length = (length | (read2 << ((8*i)+6)));
|
|
}
|
|
|
|
u8 type = fgetc(infile);
|
|
calcCrc16 = crc16_update(calcCrc16, type);
|
|
switch (type)
|
|
{
|
|
case ROM_TAG_TITLE:
|
|
{
|
|
for (i = 0; i < length; i++) {
|
|
read = fgetc(infile);
|
|
tmp_buf[i] = (char)read;
|
|
}
|
|
crc16 = (fgetc(infile) << 8) | fgetc(infile);
|
|
rip->SetName(tmp_buf);
|
|
}
|
|
break;
|
|
case ROM_TAG_PUBLISHER:
|
|
{
|
|
for (i = 0; i < length; i++) {
|
|
read = fgetc(infile);
|
|
tmp_buf[i] = (char)read;
|
|
}
|
|
crc16 = (fgetc(infile) << 8) | fgetc(infile);
|
|
}
|
|
break;
|
|
|
|
// 7 6 5 4 3 2 1 0
|
|
// +---+---+---+---+---+---+---+---+
|
|
// | ECS | rsvd | VOICE | KEYBD | byte 0
|
|
// +---+---+---+---+---+---+---+---+
|
|
// 00 -- Don't Care. The cartridge works with or without the peripheral. The peripheral is ignored.
|
|
// 01 -- Supports. The cartridge works with the peripheral and may provide extra functionality when used it.
|
|
// 10 -- Requires. The cartridge will not work without this particular peripheral.
|
|
// 11 -- Incompatible. The peripheral must not be used with this cartridge, because the two are not compatible.
|
|
case ROM_TAG_COMPATIBILITY:
|
|
{
|
|
read = fgetc(infile);
|
|
tag_compatibility[0] = read;
|
|
calcCrc16 = crc16_update(calcCrc16, read);
|
|
|
|
// Check for ECS Supported or Required...
|
|
if ((read & 0xC0) == 0x80) bUseECS = 1; // Required
|
|
if ((read & 0xC0) == 0x40) bUseECS = 3; // Supports
|
|
|
|
// Check for Intellivoice Supported or Required...
|
|
if ((read & 0x0C) == 0x08) bUseIVoice = 1; // Required
|
|
if ((read & 0x0C) == 0x04) bUseIVoice = 3; // Supports
|
|
|
|
for (i = 0; i < length-1; i++) // -1 because we already processed the first byte above...
|
|
{
|
|
read = fgetc(infile);
|
|
tag_compatibility[1+i] = read;
|
|
calcCrc16 = crc16_update(calcCrc16, read);
|
|
// ------------------------------------------------------------------------
|
|
// Optional Byte 4 is of interest to us as that one has JLP stuff in it
|
|
// +-----+-----+------+-----+-----+-----+-----+-----+
|
|
// | JLP Accel | LTOM | reserved | JLPF[9:8] | byte 3
|
|
// +-----+-----+------+-----+-----+-----+-----+-----+
|
|
// 00 JLP accel disabled; flash disabled (i.e. no JLP features)
|
|
// 01 JLP accel enabled, default to "on"; flash disabled
|
|
// 10 JLP accel enabled, default to "off"; flash enabled
|
|
// 11 JLP accel enabled, default to "on"; flash enabled
|
|
// ------------------------------------------------------------------------
|
|
if (i == 2) // 4th byte (first byte further above... 0,1,2 = fourth byte)
|
|
{
|
|
if ((read & 0xC0) != 0x00) bUseJLP = 1; else bUseJLP = 0;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ROM_TAG_RELEASE_DATE:
|
|
default:
|
|
{
|
|
for (i = 0; i < length; i++) {
|
|
fgetc(infile);
|
|
fgetc(infile);
|
|
}
|
|
fgetc(infile);
|
|
fgetc(infile);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
fclose(infile);
|
|
|
|
rip->SetFileName(filename);
|
|
rip->crc = CRC32::getCrc(filename);
|
|
rip->mySize = size;
|
|
|
|
// See if we have any special overrides for .ROM files
|
|
const struct SpecialRomDatabase_t *db_entry = FindRomDatabaseEntry(rip->crc); // Try to find the CRC in our internal database...
|
|
if (db_entry != NULL)
|
|
{
|
|
if (db_entry->bJLP) bUseJLP = db_entry->bJLP;
|
|
if (db_entry->bIntellivoice) bUseIVoice = db_entry->bIntellivoice;
|
|
if (db_entry->bECS) bUseECS = db_entry->bECS;
|
|
}
|
|
|
|
// --------------------------------------------------------------
|
|
// If the user asked for a specific combination of hardware...
|
|
// --------------------------------------------------------------
|
|
if (load_options)
|
|
{
|
|
bUseECS = 0;
|
|
bUseJLP = 0;
|
|
bUseIVoice = 0;
|
|
|
|
if ((load_options & LOAD_WITH_JLP) == LOAD_WITH_JLP) bUseJLP = 1;
|
|
if ((load_options & LOAD_WITH_ECS) == LOAD_WITH_ECS) bUseECS = 1;
|
|
if ((load_options & LOAD_WITH_IVOICE) == LOAD_WITH_IVOICE) bUseIVoice = 1;
|
|
}
|
|
|
|
// Load the JLP RAM module if required...
|
|
if (bUseJLP)
|
|
{
|
|
rip->JLP16Bit = new JLP();
|
|
rip->AddRAM(rip->JLP16Bit);
|
|
}
|
|
else
|
|
{
|
|
rip->JLP16Bit = NULL;
|
|
}
|
|
|
|
// Load the Intellivoice if asked for...
|
|
if (bUseIVoice) rip->AddPeripheralUsage("Intellivoice", (bUseIVoice == 3) ? PERIPH_OPTIONAL:PERIPH_REQUIRED);
|
|
|
|
// Load the ECS if asked for...
|
|
if (bUseECS) rip->AddPeripheralUsage("ECS", (bUseECS == 3) ? PERIPH_OPTIONAL:PERIPH_REQUIRED);
|
|
|
|
return rip;
|
|
}
|
|
|
|
|
|
|