EmuNations

Most Recent Changes

--1.8.1--

Please backup your save files before updating to be safe.

• UI: implement an option to pause the emulator when the window is inactive

• UI: improve lack of response to input changes in the sprite viewer when the emulator is paused

• UI: replace QOpenGLWidget with QWidget (thanks @GranMinigun)

• UI: fix solar sensor level menu that has been broken in 1.8.0 (fixes #370)

• GPIO: fix broken deserialization of port directions

• APU: MP2K HLE: handle corrupted wave info addresses (fixes #362)

• APU: PSG L/R volume must be remapped from 0-7 to 1-8

• GameDB: Japanese Boktai releases have a solar sensor (thanks @raphaelr)

• Redirect stdout on Windows (thanks @GranMinigun)

--1.80--

• UI: implement "Sharp" video filter for better nearest interpolation at non-integer scales (thanks GranMinigun)

• UI: implemented PPU viewers for palettes, tiles, backgrounds and sprites

• UI: add an option to set the audio volume

• UI: do not unpause emulator after loading a new ROM

• Input: fix input dropping regression introduced in NBA 1.7.1

• Input: move from SDL game controller to SDL joystick API (fixes broken mapping on some controllers)

• APU: MP2K HLE: interpolate envelopes and use floating-point math

• APU: MP2K HLE: implement a better reverb algorithm

• APU: MP2K HLE: add an option to force-enable reverb

• APU: remove "Zombie" mode emulation (does not appear to exist on GBA)

• APU: fix mid-note envelope frequency changes

• APU: FIFO writes should happen in place

• APU: reset FIFOs on overflow

• APU: add master-enable checks for 16-bit/32-bit IO writes

• PPU: fix sprite pixels from previous scanline displayed in the last scanline

• PPU: more accurate update of attribute buffer for OBJWIN sprites (fixes #275)

• PPU: more accurate emulation of horizontal and vertical sprite mosaic (fixes #322)

• PPU: more accurate handling of mid-frame vertical mosaic reconfiguration

• PPU: fix out-of-bounds bitmap fetches in Mode 3 to 5

• DMA: fix incorrect mapping of DMA channel to APU FIFO

• Timer: somewhat handle timer overflow during one cycle enable delay (thanks alyosha)

• Game Pak: simulate ~6 ms EEPROM device busy period after write (not yet accurate to cartridges that e.g. have been in the freezer for 30 minutes)

• Game Pak: emulate the Mask ROM internal address register

• Audio: fix clicking artifacts when using Sinc resampling

• Audio: fix incorrect liner interpolation in Cosine resampling

• PlatformCore: fixed hang when fast-forwarding while the emulator is paused

• Misc: implemented support for unicode paths

--1.7.1--

• PPU: disallow out-of-bounds BG VRAM tile fetches and return open bus (fixes #298)

• Core: do not skip to the next event if the CPU woke up during a DMA (fixes #297)

• KeyPad: always request IRQs from the emulator (not the calling) thread (fixes #290)

• GameDB: fix entries for a bunch of Classic NES and Famicom Mini titles (fixes #302)

• IO: do not enter STOP mode when it is not implemented

• mGBA log: clear the message buffer after printing the message

• mGBA log: flush STDOUT after each message

• Catch fmt::system_error when fmt::print() fails to write to STDOUT (fixes #301)

--1.7--

This is a major release with lots of code changed. Please backup your save files before updating to be safe.

• UI: implement a 'Use integer scaling' option

• UI: allow limiting the screen scale

• UI: allow accessing the menu during fullscreen gameplay

• UI: allow setting a custom save folder

• Core: implement save compatibility with mGBA 0.10.0+

• Core: implement basic support for the mGBA logging interface

• PPU: rewrite the PPU to be mostly cycle-accurate (fixes #241, #230, #229, #208, #141)

• PPU: implement the GREENSWAP register

• PPU: use the 6-th green channel bit during blending

• PPU: round the blending result to the nearest integer

• ARM: fix a minor timing oversight in ARM mode

• ARM: SWP and SWPB should lock the bus (no DMA interleave is possible)

• ARM: do not force-align mis-aligned PC in ARM mode

• Bus: allow the CPU to execute idle cycles in parallel to DMA

• Bus: more accurately emulate disabling the prefetch buffer

• Bus: force the first CPU access after a DMA to be non-sequential

• Bus: implement penalty for ROM code access during the last ROM prefetch cycle (fixes #203)

• IRQ: delay IO writes by one cycle

• IRQ: delay update of the IE&IF condition for unhalting the CPU

• SIO: implement basic serial transfer timing (fixes #282)

• APU: emulate the master enable bit

• APU: cancel a potentially pending event whan starting a channel (fixes #278)

• Scheduler: allow for (de)serialization of events for save states

--1.6--

• UI: implement game controller selection and remapping

• UI: enable loading ROMs from archives (Zip, 7z, RAR4)

• UI: enable loading ROMs via Drag & Drop onto the main window

• UI: fix occasional crashes when loading a ROM while the emulator is running

• UI: fix screen clearing and stop audio if ROM could not be loaded

• UI: unpause the emulator if a ROM is loaded

• UI: add an option to unlock the aspect ratio

• Core: implement Solar Sensor emulation (for Boktai I and II)

• Core: implement experimental save state support

• Save Memory: automatically detect EEPROM save sizes (closes #219)

• ARM: fix switch between FIQ and non-user/system modes

• PPU: delay H-blank IRQs by four cycles (fixes #89, fixes #175)

• PPU: disable VRAM mirror at 06018000h in bitmap modes (fixes #102)

• PPU: latch BGX/Y writes at the beginning of each scanline (fixes #176)

• PPU: delay scanline rendering by 32 cycles (fixes #93)

• PPU: properly initialise WIN0/1 state after reset (fixes #223)

• PPU: 2D OBJs should wraparound horizontally (fixes #224)

• PPU: move rendering to a secondary thread for better performance

• PPU: improve DMA3 video transfer timing

• PPU: respect WININ/WINOUT if Alpha OBJ does not have a blend source

• IRQ: add 16-bit IO access handlers to avoid scheduling multiple events

• IRQ: assign (preliminary) priorities to events for IRQ raise and acknowledge/disable events

• Timer: be explicit about IO write event order

• RTC: enable 24h-mode by default (fixes #136)

• RTC: multiple small fixes and accuracy improvements

--1.5--

• ARM: force CPSR/SPSR bit 4 to one (fixes Banjo-Kazooie: Grunty's Revenge)

• Bus: Game Pak access sometimes incurs a one-cycle penalty when prefetch is active

• Bus: HALT incurs a two-cycle penalty

• DMA: make access pattern (more) accurate for ROM to ROM and other weird DMAs.

• DMA: move the second internal cycle at the end of the transfer

• DMA: handle more changes to the control register during a transfer

• IRQ: rework interrupt delay emulation (once again)

• Timer: writing to the control register takes one cycle to apply

• PPU: apply horizontal sprite mosaic as a post-process

• APU: model FIFO as a buffer of seven (not eight) 32-bit words (thanks Gericom) (fixes #101)

• APU: high bits of SOUND2CNT_L should return zero

• Input: make KEYINPUT updates atomic to avoid incorrect game resets (from the Key IRQ)

• UI: maintain a list of recently opened files for quick loading

• UI: allow loading ROMs via process arguments

• UI: add shortcuts for fullscreen and window scale

• UI: implement a workaround for the broken menu bar during fullscreen on Windows

• UI: hide the FPS counter by default and add an option to unhide it

• OpenGL: fix a black screen issue on some Intel integrated GPUs

• macOS: build NanoBoyAdvance as an App Bundle (thanks nadiaholmquist)

--1.4--

• Audio: added a high-quality software/HLE mixer for the MusicPlayer2000 sound engine

• Platform: added a new Qt frontend with OpenGL post-processing options

• PPU: render sprites one scanline ahead (fixes #130)

• PPU: fix an off-by-one in the OBJ draw loop

• PPU: apply OAM draw limit only on OAM (instead of pixel) boundaries for now

• PPU: fix Mode4 transparency (fixes #169)

• PPU: emulate BG enable delay (fixes #94)

• PPU: update internal (affine) X/Y registers only if the BG is enabled (fixes #177)

• Memory: handle 16-bit KEYCNT writes (fixes #152)

• Memory: HALTCNT and POSTFLG should only be writable from BIOS code

• Memory: mask top two bits of the IE register

• DMA: each DMA channel should have its own memory data register (MDR)

• CPU: rework IRQ signal propagation delay

• CPU: improve IRQ exception timing

• CPU: emulate user-mode LDM bus conflict

• CPU: handle invalid CPU modes

• CPU: emulate MSR user-mode restrictions

• CPU: boot into supervisor mode instead of system mode

• CPU: handle rD=r15 edge-case in CMP/CMN/TST and TEQ

• CPU: Thumb ALU shifts now mask the shift amount

• CPU: fix unsigned multiply-long timing

• EEPROM: fix address masking

--1.3--

• ARM: handle CMP, CMN, TST and TEQ with rD = 15

• ARM: handle mode switches when the register bank does not change.

• ARM: removed errorneous user-mode switch from LDRT/STRT opcodes.

• DMA: allow DMAs to take priority over the CPU in the middle of an instruction

• DMA: delay DMA startup by two cycles and account for 2I internal cycles

• DMA: force ROM accesses to increment source address mode

• DMA: respect source address mode setting for FIFO DMA

• DMA: force FIFO DMA to use word sized accesses

• DMA: handle manual disable (via enable flag) more gracefully

• Timer: respect cascade flag in sample rate calculation

• APU: emulate DAC enable bits (fixes #64)

• PPU: match WIN0/1 trigger logic to hardware (thanks @destoer)

• PPU: fix H-blank IRQ timing (once again)

• PPU: better handle internal affine registers when multiple BG modes are used in a single frame.

• PPU: handle invalid BG modes 6 and 7 (thanks @ladystarbreeze)

• PPU: update internal affine & mosaic registers at the start of H-blank, not at the end.

• MMIO: do not fallthrough on SOUNDBIAS writes (fixes #125)

• Keypad: implemented keypad IRQ (thanks @destoer)

• Serial: implemented a serial IRQ stub

• SDL: always call glewInit() (fixes #129 )

• SDL: use binary directory as current working directory