* check if an nds save file can be opened for writing
also add the ability to open a file in append mode
* fix multi-instance saves
also move the check for file writability into a separate function (probably uneeded?)
* implement check for gba roms
* move rom load error messages into the functions
also finish gba slot (oops)
* improve error string
* check write perms before saving path settings
* fix memory leak
* check for writability of firmware/nand/sds
* add secondary checks for nand/firmware
* add check for config file being writable
* Return the file write error as a QString to avoid the invalid char*
causing a garbled error message.
Qt wants it as QString either way.
* Get rid of `ConfigEntry::ExternalBIOSEnable`
- Now the BIOS files themselves are checked
- The frontend's `Config::ExternalBIOSEnable` is not affected
* Add `JITArgs`
* Pass the JIT status to the `ARM` constructors
* Encapsulate `NDS::EnableJIT`
* Pass `JITArgs` to `ARMJIT`'s constructor
* Remove the `JIT_*` `ConfigEntry`s in favor of members
- Allow all the JIT args to be set with `NDS::SetJITArgs`
- Encapsulate the JIT-related parameters in `ARMJIT` so they can reset the block cache if changed
- Update the active (or newly-created) console in the frontend with adjusted JIT args
* Make audio bit depth and interpolation configurable in `NDSArgs`
- Define enums for both
- Give those settings default values in `NDSArgs`
- Remove `ConfigEntry::AudioBitDepth`
- Initialize these settings in the relevant SPU constructors
* Move the last DSi-specific logic in `Reset` to its own subclass
* Remove `ConfigEntry::DSi_FullBIOSBoot`
- Add members to `DSi` instead for getting and setting this
- Update the frontend to accommodate these changes
* Oops, missed a spot
* Remove `ConfigEntry::Firm_MAC` and `Platform::GetConfigArray`
- Also move the MAC parsing code to `ROMManager`
* Remove the last `ConfigEntry` state
- Make GDB support configurable via members
* Add some `#ifdef`s that I'd almost forgotten
* Remove `FATStorage::Open` and `FATStorage::Close`
- That's what the constructor and destructor are for, respectively
* Add `FATStorage::IsReadOnly`
* Slight cleanup of `FATStorage`
- Make it move-constructible and move-assignable
- Represent the absence of a sync directory with `std::optional`, not an empty string
- Add `FATStorageArgs` for later use
* Refactor `CartHomebrew` to accept an optional `FATStorageArgs`
- `CartHomebrew` uses it to load an SD card image
- Not passing a `FATStorage` directly because we won't know if we need to load the card until we parse the ROM
- Store the `FATStorage` inside a `std::optional` instead of a pointer
- `CartHomebrew::Reset` no longer reloads the SD card; the frontend needs to set it with the `SetSDCard` method
* Close `NANDImage::CurFile` when move-assigning
- Whoops
* Add `Args.h`
- To construct a `NDS` or `DSi` with arguments
- Mostly intended for system files
* Fix incorrect `final` placement
* Refactor how `DSi`'s NAND and SD card are set
- Provide them via a `DSiArgs` argument in the constructor
- Give `DSi_MMCStorage` ownership of the `NANDImage` or `FATStorage` as needed, and expose getters/setters
- Replace `DSi_SDHost::Ports` with a `array<unique_ptr, 2>` to reduce the risk of leaks
- Store `DSi_MMCStorage`'s disk images in a `std::variant`
- The SD card and NAND image are no longer reset in `Reset()`; the frontend will need to do that itself
* Add getters/setters on `DSi` itself for its storage media
* Remove newly-unused `Platform::ConfigEntry`s
* Use `DSi::SetNAND` in the frontend
* Add `EmuThread::NeedToRecreateConsole`
* Document `NDSArgs` and give its fields default values
* Refactor how system files are loaded upon construction
- Pass `NDSArgs&&` into `NDS`'s constructor
- Use `std::array` for the emulator's BIOS images and the built-in FreeBIOS, to simplify copying and comparison
- Initialize the BIOS, firmware, and SD cards from `NDSArgs` or `DSiArgs`
- Add a new default constructor for `NDS` (not `DSi`) that initializes the DS with default system files
- Embed `FirmwareMem::Firmware` directly instead of in a `unique_ptr`
- `SPIHost` now takes a `Firmware&&` that it forwards to `FirmwareMem`
- Add `Firmware` getters/setters plus `const` variants for `NDS`, `Firmware`, and `FirmwareMem`
- Simplify installation of firmware
* Initialize the DSi BIOS in the constructor
- Change `DSi::ARM9iBIOS` and `ARM7iBIOS` to `std::array`
* Update the frontend to reflect the core's changes
* Remove `DSi_SDHost::CloseHandles`
* Pass `nullopt` instead of the empty string when folder sync is off
* Deduplicate ROM extraction logic
- `LoadGBAROM` and `LoadROM` now delegate to `LoadROMData`
- Also use `unique_ptr` instead of `new[]`
* Oops, missed some `get()`'s
* Move `NDS::IsLoadedARM9BIOSBuiltIn` to the header
- So it's likelier to be inlined
- Same for the ARM7 version
* Remove `NDS::SetConsoleType`
* Add `NDS::SetFirmware`
* Move `GBACart::SetupSave` to be `protected`
- It was only ever used inside the class
* Rename `GBACart::LoadSave` to `SetSaveMemory`
- Same for the cart slot
* Declare `GBACartSlot` as a friend of `GBACart::CartCommon`
* Revise `GBACartSlot`'s getters and setters
- Rename `InsertROM` and `LoadROM` to `SetCart`
- Add a `GetCart` method
* Clean up getters and setters for NDS and GBA carts
* Clean up how carts are inserted into the slots
- Remove setters that operate directly on pointers, to simplify error-handling (use ParseROM instead)
- Add overloads for all carts that accept a `const u8*` (to copy the ROM data) and a `unique_ptr<u8[]>` (to move the ROM data)
- Store all ROM and RAM data in `unique_ptr`
- Default-initialize all fields
- Simplify constructors and destructors, inheriting where applicable
* Refactor GBA save data insertion
- Make `SetupSave` private and non-virtual and move its logic to be in `SetSaveMemory`
- Add overloads for setting save data in the constructor
- Update the SRAM completely in `SetSaveMemory`
* Clean up `NDSCart::CartCommon::SetSaveMemory`
- Move its declaration next to the other `SaveMemory` methods
- Move its (empty) implementation to the header
* Add some comments
* Add Utils.cpp and Utils.h
* Rename some functions in Utils for clarity
* Add `GBACart::ParseROM` and `NDSCart::ParseROM` overloads that accept `unique_ptr<u8[]>`
- The `u8*` overloads delegate to these new overloads
- Also move `SetupSave` for both kinds of carts to be private non-virtual methods
* Finalize the `NDSCart` refactor
- Add `NDSCartArgs` to pass to `ParseROM`
- Add SRAM arguments for all retail carts
- Initialize SRAM inside the constructor
- Delegate to other constructors where possible
* Replace `ROMManager::NDSSave` and `GBASave` with `unique_ptr`
* Make both cart slots return the previously-inserted cart in `EjectCart`
- Primarily intended for reusing carts when resetting the console
* Make `NDS::EjectCart` return the old cart
* Initialize both cart slots with the provided ROM (if any)
* Make `NDS::EjectGBACart` return the ejected cart
* Clean up some comments in Args.h
* Rename `ROMManager::LoadBIOS` to `BootToMenu`
- Clarifies the intent
* Add `ROMManager::LoadDLDISDCard`
* Add a doc comment
* Refactor how the `NDS` is created or updated
- Rewrite `CreateConsole` to read from `Config` and load system files, but accept carts as arguments
- Fail without creating an `NDS` if any required system file doesn't load
- Add `UpdateConsole`, which delegates to `CreateConsole` if switching modes or starting the app
- Use `std::variant` to indicate whether a cart should be removed, inserted, or reused
- Load all system files (plus SD cards) in `UpdateConsole`
- Eject the cart and reinsert it into the new console if applicable
* Respect some more `Config` settings in the `Load*` functions
* Remove `InstallNAND` in favor of `LoadNAND`
* Fix some potential bugs in `LoadROMData`
* Oops, forgot to delete the definition of `InstallNAND`
* Add functions to get `FATStorageArgs`
- Not the cards themselves, but to get the arguments you _would_ use to load the cards
* Refactor `ROMManager::LoadROM`
- Load the ROM and save data before trying to initialize the console
* Clean up `ROMManager::Reset` and `BootToMenu`
- Let `EmuThread::UpdateConsole` do the heavy lifting
* Clean up `LoadGBAROM`
* Remove some unused functions
* Set the default DSi BIOS to be broken in `DSiArgs`
* Respect `Config::DSiFullBIOSBoot` when loading DSi BIOS files
* Remove some more unused functions
* Remove redundant `virtual` specifiers
* Refactor `NDSCart::CartCommon::Type()` to return a member instead of a constant
- One less virtual dispatch
- The cart type is read in `NDSCartSlot::DoSavestate`, which is a path downstream (due to rewinding)
* Remove a hash that I computed for debugging purposes
* Make `ByteSwap` `constexpr`
* Remove an unused `#include`
* Remove unnecessary functions from the NDS carts
- Mostly overrides that added nothing
* Default-initialize all NDSCart fields
* Make `GBACart::Type()` not rely on virtual dispatch
- `GBACartSlot::DoSavestate` calls it, and savestates can be a hot path downstream
* Don't forget to reset the base class in `CartGameSolarSensor::Reset()`
* Remove redundant `virtual` specifiers
* Default-initialize some fields in `GBACart`
* Fix ROMs not loading from archives in the frontend
- Whoops
* Change how the `Firmware` member is declared
* Forgot an include in Utils.cpp
* Rename `FirmwareMem::Firmware` to `FirmwareData` to fix a build error on Linux
- One of these days I'll convince you people to let me use `camelCaseMemberNames`
* Add `override` to places in `DSi_MMCStorage` that warrant it
* Fix firmware saving on the frontend
- Remove `GetConfigString` and `ConfigEntry::WifiSettingsPath` while I'm at it
* Add a non-const `GetNAND()`
* Reorganize namespaces
- Most types are now moved into the `melonDS` namespace
- Only good chance to do this for a while, since a big refactor is next
* Fix the build
* get this started
* implement DSi RTC commands
* set up RTC clock timer. lay down basic idea of a clock.
* make the date/time registers writable
* move RTC state to its own structure, to make it easier to deal with
* more RTC work
lay base for date/time dialog
* get the bulk of the RTC functionality going
* much simpler design for RTC stuff
* aha, that is what it is
* start working on the RTC IRQ
* implement all types of RTC IRQ
* start refining sleep mode. code still kinda sucks.
* implement keypad IRQ
* refine it some more
* shut the fuck uuuuuupppppppppppppp
* Replace some standard I/O calls with Platform equivalents
- I missed a spot when I submitted that PR a few months ago
* Include <memory> in DSi_NAND.h
- Because it uses unique_ptr
* Split DSi_NAND::ReadHardwareInfo into ReadSerialData and ReadHardwareInfoN
* Add a RegionMask enum
* Move DSi NAND patching to the frontend
* Add DSiSupportedLanguageMask
- Not currently used by the frontend, but I use it in melonDS DS
* Remove some Platform::ConfigEntry values
- The core no longer needs to know about them
- The corresponding Config values are unchanged
* Mark NANDMount's destructor as noexcept
* gdbstub beginnings
* gdbstub: finish gdb impl things, next up is integration with melonDS
* holy fuck the gdbstub works
* gdb breakpoints work, but there's a mysterious crash on continue
* fix memory corruption that sometimes happened, and make resetting the console thru gdb work
* remove some gdb debug printing
* fix things in gdbstub
* separate option for enabling gdbstub
* add mode-dependent CPU registers
* C++ize the GDBstub code
* add gdbstub config in emu settings dialog
* make sure gdb is disabled when jit is enabled
* Remove unnecessary compiler flags, mark ARMJIT assembly code as no-execute-stack
This hardens the binary a little bit against common exploitation methods
* add option to wait for debugger attach on startup
* only insert GNU stack notes on linux
* disable gdbstub enable checkbox when jit is enabled
* fix non-linux incompatibilities
* enable gdbstub by default
* fix issues with gdbstub settings disable stuff
* format stuff
* update gdb test code
* Fix segfault when calling StubCallbacks->GetCPU()
C++ overrides are hard. Please I'm just a lowly C programmer.
* fix packet size not being sent correctly
Thanks to @GlowingUmbreon on Github for troubleshooting this
* fix select(2) calls (i should read docs more properly)
* fix GDB command sequencing/parsing issue (hopefully)
* [GDB] implement no-ack mode
* fix sending ack on handshake
* get lldb to work
* Refactor diskio's contents
- Change ff_disk_read_cb/write_cb into a std::function instead of a raw pointer
- Add const specifiers as needed
* Refactor DSi_NAND to manage the file system's mounted lifetime with RAII
* Split NANDMount into NANDMount and NANDImage
- NANDImage is used for information about the NAND that doesn't require decryption or filesystem access
- NANDMount is used to actually access the file system
- Both classes manage their respective resources (the NAND file handle and the NAND's mount) with RAII
- Also split the file loading into another function that I will remove in a later PR
* Make NANDMount immovable
* Remove NAND-loading code that I had sectioned off into a function
- Incomplete copypasta
- I must have gotten distracted
* Tidy up NANDImage's initialization
- Don't unmount the disk image if the constructor fails (that's NANDMount's job now)
- Only assign CurFile if the constructor succeeds
* Add some const-correctness
* Move DSi NAND initialization to the frontend
- The NANDImage is now installed via a unique_ptr in DSi
* Remove Platform::DSi_NANDPath
- Not Config::DSiNANDPath; that can still be configured as usual
- The core no longer needs to care
* Introduce firmware-related structs
* Fix some indents
* Move the generated firmware identifier to a constant
* Document the WifiAccessPoint constructors
* Add some constants
* Remove a stray comment
* Implement Firmware::UserData
* Add Firmware::Mask
* Document Firmware::Buffer
* Add a Firmware constructor that uses a FileHandle
* Set the default username in UserData
* Update the UserData checksum
* Forgot to include Platform.h
* Remove some redundant assignments in the default Firmware constructor
* const-ify CRC16
* Replace the plain Firmware buffer with a Firmware object
- Remove some functions that were reimplemented in the Firmware constructors
* Fix some crashes due to undefined behavior
* Fix the user data initialization
- Initialize both user data objects to default
- Set both user data objects to the same touch screen calibration
* Follow the DS logic in determining which user data section is current
* Remove an unneeded include
* Remove another unneeded include
* Initialize FirmwareMask in Firmware::Firmware
* Use the DEFAULT_SSID constant
* Add SPI_Firmware::InstallFirmware and SPI_Firmware::RemoveFirmware
* Move a logging call to after the file is written
* Add a SaveManager for the firmware
* Touch up the SPI_Firmware::Firmware declaration
* Move all firmware loading and customization to the frontend
* Call Platform::WriteFirmware when it's time to write the firmware back to disk
* Fix some missing stuff
* Remove the Get* functions from SPI_Firmware in favor of GetFirmware()
* Implement SPI_Firmware::DeInit in terms of RemoveFirmware
* Add Firmware::UpdateChecksums
* Fix an incorrect length
* Update all checksums in the firmware after setting touch screen calibration data
* Use the Firmware object's Position methods
* Remove register fields from the Firmware object
* Install the firmware before seeing if direct boot is necessary
* Install the firmware before calling NDS::Reset in LoadROM
* Slight cleanup in ROMManager
* Fix the default access point name
* Shorten the various getters in Firmware
* Add qualifiers for certain uses of firmware types
- GCC can get picky if -fpermissive isn't defined
* Add an InstallFirmware overload that takes a unique_ptr
* Log when firmware is added or removed
* Don't clear the firmware in SPI_Firmware::Init
- The original code didn't, it just set the pointer to nullptr
* Fix a typo
* Write back the full firmware if it's not generated
* Move the FreeBIOS to an external file
* Load wfcsettings.bin into the correct part of the generated firmware blob
* Load BIOS files in the frontend, not in the core
* Fix logging the firmware ID
* Add some utility functions
* Mark Firmware's constructors as explicit
* Remove obsolete ConfigEntry values
* Include <locale> explicitly in ROMManager
* Fix up some includes
* Add Firmware::IsBootable()
* Add a newline to a log entry
- Whoops
* Log the number of bytes written out in SaveManager
* Mark FirmwareHeader's constructor as explicit
* Clean up GenerateDefaultFirmware and LoadFirmwareFromFile
- Now they return a pair instead of two by-ref values
* Refactor SaveManager a little bit
- Manage its buffers as unique_ptrs to mitigate leaks
- Reallocate the internal buffer if SetPath is asked to reload the file (and the new length is different)
* Remove some stray parens
* Fix some firmware-related bugs I introduced
- Firmware settings are now properly saved to disk (beforehand I misunderstood when the firmware blob was written)
- Firmware is no longer overwritten by contents of wfcsettings.bin
* Slight cleanup
* Introduce some Platform calls for managing dynamic libraries
* Add Platform::WriteFATSectors
* Introduce some Platform calls for managing dynamic libraries
* Add Platform::WriteFATSectors
* Change includes of "../types.h" to "types.h"
- Makes it easier to directly include these headers in downstream projects
* Change an include of "../Wifi.h" to "Wifi.h"
* Allow CommonFuncs.cpp to compile on Android
* Tidy up some logging calls
- Use Platform::Log in LAN_Socket.cpp
- Soften some warnings to Debug logs (since they don't necessarily represent problems)
* Add Platform::EnterGBAMode
- Gracefully stop the emulator if trying to enter GBA mode
* Soften some logs that most players won't care about
* Soften some more logs
* Introduce Platform wrappers for file operations
* Fix pointer spacing
* Fix more style nits
* Log the errno when ftruncate fails
* Fix FileSeek offset argument
- With an s32 offset, we couldn't access files larger than 2GB
* Revise Platform::StopEmu to address feedback
- Remove Platform::EnterGBAMode in favor of adding a reason to Platform::StopEmu
- Also rename Platform::StopEmu to Platform::SignalStop
- Add an optional argument to NDS::Stop
- Use the new argument everywhere that the console stops itself
* Rename FileGetString to FileReadLine
- It conveys the meaning better
* Rename FileSeekOrigin::Set to Start
- It conveys the meaning better
* Change definition of FileGetString to FileReadLine
- Oops, almost forgot it
* Rename FlushFile to FileFlush
- To remain consistent with the other File functions
* Add a FileType usage
* Fix line break in FileSeekOrigin
* Document Platform::DeInit
* Clarify that StopReason::Unknown doesn't always mean an error
* Move and document FileType::HostFile
* Remove Platform::OpenDataFile
- Nothing currently uses it
* Refactor Platform::OpenFile and Platform::OpenLocalFile to accept a FileMode enum instead of a string
- The enum is converted to fopen flags under the hood
- The file type is used to decide whether to add the "b" flag
- Some helper functions are exposed for the benefit of consistent behavior among frontends
- Equivalent behavior is maintained
* Fix a tab that should be spaces
* Use Windows' 64-bit implementations of fseek/ftell
* Move Platform::IsBinaryFile to Platform.cpp
- It could vary by frontend
* Remove an unused FileType
* Rename an enum constant
* Document various Platform items
* Use Platform::DynamicLibrary to load libandroid
- And clean it up at the end
* Fix a typo
* Pass the correct filetype to FATStorage
- Since it can be used for DSI NAND images or for SD cards
* Remove Platform::FileType
* DSi: add option to boot the full boot ROMs
added a config option for this so that this can be enabled or disabled
also added IO regs for DSi GPIO, but those don't do anything yet.
* reset GPIO regs on reset
* Add Platform::Log and Platform::LogLevel
* Replace most printf calls with Platform::Log calls
* Move a brace down
* Move some log entries to one Log call
- Some implementations of Log may assume a full line
* Log the MAC address as LogLevel::Info
* attempt at betterer wifi
* add preliminary sync mechanism
* fix gaps in wifi implementation
* move local-MP comm to its own module instead of cramping Platform.cpp
* remove some stupid cruft
* as you wish, Sorer
(starting work on shared-memory system)
* shared-memory IPC that actually works (albeit Windows-only for now)
* shut up logging from NULL writes on ARM7 (ffs Nintendo learn to code)
* get this somewhat good
* leave client sync mode when host deauths. makes download play actually work.
* start implementing MP-comm error handling
* * add MP-reply error counters
* feeble attempt at fixing slowdown/desync/etc problems
* somewhat better exchange/sync method
* * when entering power-saving mode, be sure to finish transferring the current frame first
* fix misc bug due to old cruft leftover
makes for a more stable connection
* remove a bunch of cruft
* set wifi time interval to 34 cycles instead of 33. games seem sensitive to the general timing of wifi vs the rest of the system, and this seems to make things run better, atleast until I rewrite this to use a proper scheduler.
* more graceful handling of disconnects
* deal with FIFO overflow more gracefully
* BAHAHAHAHAHAHAHAHHHH
THE SNEAKY BASTARDS
so, when the DS receives a beacon with the right BSSID
that beacon's timestamp is copied to USCOUNTER
* attempt at making the connection process smoother for weird games
* * begin adding POWCNT2, only applies to wifi for now
* begin work on wifi scheduler
* implement the shitty timers
* add the RF wakeup thing
* begin work on receiving frames. for now it can just receive melonAP beacons, but hey, it's a start.
* add enough TX functionality that online wifi is a possibility again.
* there are problems with this scheduler thing. committing it anyway
* kind of a rollback... we're gonna work out a compromise on this, I guess
* don't transmit shit if RXCNT.bit15 isn't set
* move RX-finish to its own function. more accurate filtering. implement RXFILTER.
* remove some cruft
* fix some of the shittiness when trying to connect more than two players
* fix some more shittiness
* fix more wifi shittiness (mainly don't try to receive shit while sending a frame)
* run wifi every 8µs. improves performance.
* fix IRQ14/IRQ15
* make this work under Linux
* Make it work on macOS, for now using a custom sem_timedwait
implementation.
If anyone knows anything about mach ports and have an idea for how to
make this work using mach IPC, please do let me know.
* 25ms seems like a good timeout
* begin work on proper multiplayer UI shito.
for now, determine a global instance ID, and derivate the system MAC from it. remove 'randomize MAC' option.
* finish removing RandomizeMAC
* lay groundwork for instance-unique config
* work some on the UI... make it not labelled Fart
* more UI work: make it explicit that some things are instance-unique
* separate firmware files for multiplayer instances
* make instances save to different save files, too
* more UI work, make things somewhat less shitty
* lay base for the multiplayer settings dialog
* actually hook up most of that dialog
* actually implement the fun audio settings
* ensure all the wifi shit is properly savestated and reset. properly update timings for the wifi region when wifi is disabled.
* add more fun labels
* * ignore WEP frames if WEP is off
* implement RX_LEN_CROP
* fake enough of WEP processing to make Inazuma Eleven work
* * do not copy more ROM banner data than actually needed
* avoid trying to read out of bounds if the banner offset is bad
* Fix oversight with the preferences action causing the build to fail on macOS
Co-authored-by: Nadia Holmquist Pedersen <nadia@nhp.sh>
also including:
* getting rid of shitty strings
* all new, cleaner ROM handling code
* base for DSi savestates
* GBA slot addons (for now, memory cart)
* Offload NDS SRAM writing to separate thread, debounce writes to two seconds after last flush or DeInit.
* Fixed printf messages.
* Fixes after CR.
* Fixed potential portability issue with time_t
Squashed commit of the following:
commit b463a05d4b909372f0cd1ad91caa0c77a25e5901
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Mon Nov 30 01:55:35 2020 +0100
minor fix
commit ce73cebbdf5da243d7ebade82d8799ded9cd6b28
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Mon Nov 30 00:43:08 2020 +0100
fix dirty flags of BG/OBJ mappings not being reset
commit fc5d73a6178e3adc444398bdd23de8314b5ca8f8
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Mon Nov 30 00:11:13 2020 +0100
use flat vram for gpu2d everywhere
commit 34ee9fe2bf04fcfa2a5a1c8d78d70007e606f1a2
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Sat Nov 28 19:10:34 2020 +0100
mark VRAM dirty for display capture
commit e8778fa2f429c6df0eece19d6a5ee83ae23a0cf4
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Sat Nov 28 18:59:31 2020 +0100
use flat VRAM for textures and texpals
also skip rendering if nothing changed and a bunch of fixes
commit 53f2041e2e1a28b35702a2ed51de885c36689f71
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Fri Nov 27 18:29:56 2020 +0100
use vram dirty tracking for extpals
also preparations to take this further
commit 4cdfa329e95aed26d3b21319c8fd86a04abf20f7
Author: RSDuck <rsduck@users.noreply.github.com>
Date: Mon Nov 16 23:32:22 2020 +0100
VRAM dirty tracking
