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added 03E0 bankswitching for Brazilian Parker Bros ROMs (resolves #887)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| //============================================================================ | ||
| // | ||
| // SSSS tt lll lll | ||
| // SS SS tt ll ll | ||
| // SS tttttt eeee ll ll aaaa | ||
| // SSSS tt ee ee ll ll aa | ||
| // SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator" | ||
| // SS SS tt ee ll ll aa aa | ||
| // SSSS ttt eeeee llll llll aaaaa | ||
| // | ||
| // Copyright (c) 1995-2023 by Bradford W. Mott, Stephen Anthony | ||
| // and the Stella Team | ||
| // | ||
| // See the file "License.txt" for information on usage and redistribution of | ||
| // this file, and for a DISCLAIMER OF ALL WARRANTIES. | ||
| //============================================================================ | ||
|
|
||
| #include "Cart03E0.hxx" | ||
| #include "Cart03E0Widget.hxx" | ||
|
|
||
| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| Cartridge03E0Widget::Cartridge03E0Widget( | ||
| GuiObject* boss, const GUI::Font& lfont, const GUI::Font& nfont, | ||
| int x, int y, int w, int h, Cartridge03E0& cart) | ||
| : CartridgeEnhancedWidget(boss, lfont, nfont, x, y, w, h, cart) | ||
| { | ||
| initialize(); | ||
| } | ||
|
|
||
| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| string Cartridge03E0Widget::description() | ||
| { | ||
| ostringstream info; | ||
|
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||
| info << "03E0 cartridge,\n eight 1K banks mapped into four segments\n" | ||
| << CartridgeEnhancedWidget::description(); | ||
|
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| return info.str(); | ||
| } | ||
|
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| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| string Cartridge03E0Widget::romDescription() | ||
| { | ||
| ostringstream info; | ||
|
|
||
| for(int seg = 0; seg < 4; ++seg) | ||
| { | ||
| const uInt16 segmentOffset = seg << 10; // myCart.myBankShift; | ||
|
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| info << "Segment #" << seg << " accessible @ $" | ||
| << Common::Base::HEX4 << (ADDR_BASE | segmentOffset) | ||
| << " - $" << (ADDR_BASE | (segmentOffset + /*myCart.myBankSize - 1*/ 0x3FF)) << ",\n"; | ||
| if (seg < 3) | ||
| info << " Hotspots " << hotspotStr(0, seg, true) << " - " << hotspotStr(7, seg, true) << "\n"; | ||
| else | ||
| info << " Always points to last 1K bank of ROM\n"; | ||
| } | ||
| info << "Startup banks = 4 / 5 / 6 or undetermined"; | ||
|
|
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| return info.str(); | ||
| } | ||
|
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| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| string Cartridge03E0Widget::hotspotStr(int bank, int segment, bool noBrackets) | ||
| { | ||
| static constexpr uInt16 hotspots[3] = {0x03E0, 0x03D0, 0x03B0}; | ||
| ostringstream info; | ||
|
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| info << (noBrackets ? "" : "(") | ||
| << "$" << Common::Base::HEX1 << ( hotspots[segment] + bank) | ||
| << (noBrackets ? "" : ")"); | ||
|
|
||
| return info.str(); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| //============================================================================ | ||
| // | ||
| // SSSS tt lll lll | ||
| // SS SS tt ll ll | ||
| // SS tttttt eeee ll ll aaaa | ||
| // SSSS tt ee ee ll ll aa | ||
| // SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator" | ||
| // SS SS tt ee ll ll aa aa | ||
| // SSSS ttt eeeee llll llll aaaaa | ||
| // | ||
| // Copyright (c) 1995-2023 by Bradford W. Mott, Stephen Anthony | ||
| // and the Stella Team | ||
| // | ||
| // See the file "License.txt" for information on usage and redistribution of | ||
| // this file, and for a DISCLAIMER OF ALL WARRANTIES. | ||
| //============================================================================ | ||
|
|
||
| #ifndef CARTRIDGE03E0_WIDGET_HXX | ||
| #define CARTRIDGE03E0_WIDGET_HXX | ||
|
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| class Cartridge03E0; | ||
|
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| #include "CartEnhancedWidget.hxx" | ||
|
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| class Cartridge03E0Widget : public CartridgeEnhancedWidget | ||
| { | ||
| public: | ||
| Cartridge03E0Widget(GuiObject* boss, const GUI::Font& lfont, | ||
| const GUI::Font& nfont, | ||
| int x, int y, int w, int h, | ||
| Cartridge03E0& cart); | ||
| ~Cartridge03E0Widget() override = default; | ||
|
|
||
| private: | ||
| string manufacturer() override { return "Parker Brothers (Brazil Pirate)"; } | ||
|
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| string description() override; | ||
|
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| string romDescription() override; | ||
|
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| string hotspotStr(int bank, int segment, bool noBrackets = false) override; | ||
|
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| uInt16 bankSegs() override { return 3; } | ||
|
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| private: | ||
| // Following constructors and assignment operators not supported | ||
| Cartridge03E0Widget() = delete; | ||
| Cartridge03E0Widget(const Cartridge03E0Widget&) = delete; | ||
| Cartridge03E0Widget(Cartridge03E0Widget&&) = delete; | ||
| Cartridge03E0Widget& operator=(const Cartridge03E0Widget&) = delete; | ||
| Cartridge03E0Widget& operator=(Cartridge03E0Widget&&) = delete; | ||
| }; | ||
|
|
||
| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| //============================================================================ | ||
| // | ||
| // SSSS tt lll lll | ||
| // SS SS tt ll ll | ||
| // SS tttttt eeee ll ll aaaa | ||
| // SSSS tt ee ee ll ll aa | ||
| // SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator" | ||
| // SS SS tt ee ll ll aa aa | ||
| // SSSS ttt eeeee llll llll aaaaa | ||
| // | ||
| // Copyright (c) 1995-2023 by Bradford W. Mott, Stephen Anthony | ||
| // and the Stella Team | ||
| // | ||
| // See the file "License.txt" for information on usage and redistribution of | ||
| // this file, and for a DISCLAIMER OF ALL WARRANTIES. | ||
| //============================================================================ | ||
|
|
||
| #include "System.hxx" | ||
| #include "Cart03E0.hxx" | ||
|
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||
| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| Cartridge03E0::Cartridge03E0(const ByteBuffer& image, size_t size, | ||
| string_view md5, const Settings& settings, | ||
| size_t bsSize) | ||
| : CartridgeEnhanced(image, size, md5, settings, bsSize) | ||
| { | ||
| myBankShift = BANK_SHIFT; | ||
| } | ||
|
|
||
| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| void Cartridge03E0::install(System& system) | ||
| { | ||
| CartridgeEnhanced::install(system); | ||
|
|
||
| // Get the page accessing methods for the hot spots since they overlap | ||
| // areas within the TIA we'll need to forward requests to the TIA | ||
| myHotSpotPageAccess[0] = mySystem->getPageAccess(0x0380); | ||
| myHotSpotPageAccess[1] = mySystem->getPageAccess(0x03c0); | ||
|
|
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| // Set the page accessing methods for the hot spots | ||
| const System::PageAccess access(this, System::PageAccessType::READ); | ||
| for(uInt16 addr = 0x0380; addr < 0x03FF; addr += System::PAGE_SIZE) | ||
| mySystem->setPageAccess(addr, access); | ||
| } | ||
|
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| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| void Cartridge03E0::reset() | ||
| { | ||
| // Setup segments to some default banks | ||
| if(randomStartBank()) | ||
| { | ||
| bank(mySystem->randGenerator().next() % 8, 0); | ||
| bank(mySystem->randGenerator().next() % 8, 1); | ||
| bank(mySystem->randGenerator().next() % 8, 2); | ||
| } | ||
| else | ||
| { | ||
| bank(4, 0); | ||
| bank(5, 1); | ||
| bank(6, 2); | ||
| } | ||
| myBankChanged = true; | ||
| } | ||
|
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| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| bool Cartridge03E0::checkSwitchBank(uInt16 address, uInt8) | ||
| { | ||
| bool switched = false; | ||
|
|
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| if((address & 0x10) == 0) | ||
| { | ||
| bank(address & 0x0007, 0); | ||
| switched = true; | ||
| } | ||
| if((address & 0x20) == 0) | ||
| { | ||
| bank(address & 0x0007, 1); | ||
| switched = true; | ||
| } | ||
| if((address & 0x40) == 0) | ||
| { | ||
| bank(address & 0x0007, 2); | ||
| switched = true; | ||
| } | ||
| return switched; | ||
| } | ||
|
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| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| uInt8 Cartridge03E0::peek(uInt16 address) | ||
| { | ||
| checkSwitchBank(address, 0); | ||
|
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| // Because of the way we've set up accessing above, we can only | ||
| // get here when the addresses are from 0x380 - 0x3FF | ||
| const int hotspot = ((address & 0x40) >> 6); | ||
| return myHotSpotPageAccess[hotspot].device->peek(address); | ||
| } | ||
|
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||
| // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | ||
| bool Cartridge03E0::poke(uInt16 address, uInt8 value) | ||
| { | ||
| // Because of the way accessing is set up, we will may get here by | ||
| // doing a write to 0x380 - 0x3FF or cart; we ignore the cart write | ||
| if(!(address & 0x1000)) | ||
| { | ||
| checkSwitchBank(address, 0); | ||
|
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| const int hotspot = ((address & 0x40) >> 6); | ||
| myHotSpotPageAccess[hotspot].device->poke(address, value); | ||
| } | ||
|
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||
| return false; | ||
| } |
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