-
-
Notifications
You must be signed in to change notification settings - Fork 49
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Korean MSX SMS 8000 (Zemina) mapper support. #81
- Loading branch information
Showing
11 changed files
with
252 additions
and
14 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file was deleted.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| /* | ||
| * Gearsystem - Sega Master System / Game Gear Emulator | ||
| * Copyright (C) 2013 Ignacio Sanchez | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * any later version. | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see http://www.gnu.org/licenses/ | ||
| * | ||
| */ | ||
|
|
||
| #include "KoreanMSXSMS8000MemoryRule.h" | ||
| #include "Memory.h" | ||
| #include "Cartridge.h" | ||
|
|
||
| KoreanMSXSMS8000MemoryRule::KoreanMSXSMS8000MemoryRule(Memory* pMemory, Cartridge* pCartridge, Input* pInput) : MemoryRule(pMemory, pCartridge, pInput) | ||
| { | ||
| Reset(); | ||
| } | ||
|
|
||
| KoreanMSXSMS8000MemoryRule::~KoreanMSXSMS8000MemoryRule() | ||
| { | ||
| } | ||
|
|
||
| u8 KoreanMSXSMS8000MemoryRule::PerformRead(u16 address) | ||
| { | ||
| if (address < 0xC000) | ||
| { | ||
| int page = (address >> 13) & 0x03; | ||
| if (page > 5) | ||
| { | ||
| Debug("--> ** Invalid page %d", page); | ||
| return 0xFF; | ||
| } | ||
| return m_pCartridge->GetROM()[m_iPageAddress[page] + (address & 0x1FFF)]; | ||
| } | ||
| else | ||
| { | ||
| // RAM + RAM mirror | ||
| return m_pMemory->Retrieve(address); | ||
| } | ||
| } | ||
|
|
||
| void KoreanMSXSMS8000MemoryRule::PerformWrite(u16 address, u8 value) | ||
| { | ||
| if (address < 0xC000) | ||
| { | ||
| if (address == 0x8000) | ||
| { | ||
| Debug("--> ** Writing to register $%X %X", address, value); | ||
|
|
||
| if (m_Register == 0xFF) | ||
| value ^= 0x22; | ||
|
|
||
| m_Register = value; | ||
|
|
||
| if (value & 0x80) | ||
| { | ||
| m_iPageAddress[0] = 0x2000 * ((value ^ 0x03) & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| m_iPageAddress[1] = 0x2000 * ((value ^ 0x02) & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| } | ||
| else | ||
| { | ||
| m_iPageAddress[0] = 0x2000 * (0x3C & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| m_iPageAddress[1] = 0x2000 * (0x3C & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| } | ||
|
|
||
| m_iPageAddress[2] = 0x2000 * ((value ^ 0x01) & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| m_iPageAddress[3] = 0x2000 * ((value ^ 0x00) & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| m_iPageAddress[4] = 0x2000 * ((value ^ 0x03) & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| m_iPageAddress[5] = 0x2000 * ((value ^ 0x02) & (m_pCartridge->GetROMBankCount8k() - 1)); | ||
| } | ||
| else | ||
| { | ||
| Debug("--> ** Attempting to write on ROM address $%X %X", address, value); | ||
| } | ||
| } | ||
| else if (address < 0xE000) | ||
| { | ||
| // RAM | ||
| m_pMemory->Load(address, value); | ||
| m_pMemory->Load(address + 0x2000, value); | ||
| } | ||
| else | ||
| { | ||
| // RAM (mirror) | ||
| m_pMemory->Load(address, value); | ||
| m_pMemory->Load(address - 0x2000, value); | ||
| } | ||
| } | ||
|
|
||
| void KoreanMSXSMS8000MemoryRule::Reset() | ||
| { | ||
| m_Register = 0; | ||
| m_iPageAddress[0] = 0x2000 * (0x3C); | ||
| m_iPageAddress[1] = 0x2000 * (0x3C); | ||
| m_iPageAddress[2] = 0x2000 * (m_Register ^ 0x01); | ||
| m_iPageAddress[3] = 0x2000 * (m_Register ^ 0x00); | ||
| m_iPageAddress[4] = 0x2000 * (m_Register ^ 0x03); | ||
| m_iPageAddress[5] = 0x2000 * (m_Register ^ 0x02); | ||
| } | ||
|
|
||
| u8* KoreanMSXSMS8000MemoryRule::GetPage(int index) | ||
| { | ||
| return 0; | ||
| // switch (index) | ||
| // { | ||
| // case 0: | ||
| // case 1: | ||
| // return m_pCartridge->GetROM() + (index * 0x4000); | ||
| // case 2: | ||
| // return m_pCartridge->GetROM() + m_iMapperSlot2Address; | ||
| // default: | ||
| // return NULL; | ||
| // } | ||
| } | ||
|
|
||
| int KoreanMSXSMS8000MemoryRule::GetBank(int index) | ||
| { | ||
| return 0; | ||
|
|
||
| // switch (index) | ||
| // { | ||
| // case 0: | ||
| // case 1: | ||
| // return index; | ||
| // case 2: | ||
| // return m_iMapperSlot2; | ||
| // default: | ||
| // return 0; | ||
| // } | ||
| } | ||
|
|
||
| void KoreanMSXSMS8000MemoryRule::SaveState(std::ostream& stream) | ||
| { | ||
| stream.write(reinterpret_cast<const char*> (m_iPageAddress), sizeof(m_iPageAddress)); | ||
| stream.write(reinterpret_cast<const char*> (&m_Register), sizeof(m_Register)); | ||
| } | ||
|
|
||
| void KoreanMSXSMS8000MemoryRule::LoadState(std::istream& stream) | ||
| { | ||
| using namespace std; | ||
|
|
||
| stream.read(reinterpret_cast<char*> (m_iPageAddress), sizeof(m_iPageAddress)); | ||
| stream.read(reinterpret_cast<char*> (&m_Register), sizeof(m_Register)); | ||
| } |
Oops, something went wrong.