I put the BIOS in the system/keropi folder:
load core, load content, choose a game (My roms are in .HDM format) and for most games either of the following screens appear, even when choosing Disk1.
Screen 1:
Screen 2: Example log for screen 1:[INFO] RetroArch 1.9.7 (Git 5c2f79a)
[INFO] === Build =======================================
[INFO] CPU Model Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4 SSE4.2 AES AVX
[INFO] Built: Jul 25 2021
[INFO] Version: 1.9.7
[INFO] Git: 5c2f79a
[INFO] =================================================
[INFO] [Input]: Found input driver: "dinput".
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[INFO] Version of libretro API: 1
[INFO] Compiled against API: 1
[INFO] [Audio]: Set audio input rate to: 48000.00 Hz.
[INFO] [Video]: Video @ fullscreen
[INFO] [Vulkan]: Vulkan dynamic library loaded.
[INFO] [Vulkan]: Found vulkan context: vk_w
[INFO] [Vulkan]: Detecting screen resolution 1920x1080.
[INFO] [Vulkan]: Found GPU at index 0: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Using GPU index 0.
[INFO] [Vulkan]: Using GPU: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Queue family 0 supports 16 sub-queues.
[INFO] [Vulkan]: Using resolution 1920x1080
[INFO] [Vulkan]: Using RGB565 format.
[INFO] [Vulkan]: Loading stock shader.
[INFO] [XInput]: Found XInput v1.4.
[INFO] [Joypad]: Found joypad driver: "xinput".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Video]: Found display server: win32
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [SRAM]: SRAM will not be saved.
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_music_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_video_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_image_history.lpl].
[INFO] [Playlist]: Loading favorites file: [D:\Emulators\RetroArch-Win64\content_favorites.lpl].
[INFO] [CONTENT LOAD]: Updating firmware status for: D:\Emulators\RetroArch-Win64\cores\px68k_libretro.dll on D:\Emulators\RetroArch-Win64\system
[INFO] [CORE]: Using content: D:\Extracted roms\Sharp X68000\Street Fighter II' - Champion Edition [FD]\Street Fighter II' - Champion Edition (System disk).hdm.
[INFO] [Core]: Content ran for a total of: 00 hours, 00 minutes, 00 seconds.
[INFO] [Core]: Unloading core..
[INFO] [Core]: Unloading core symbols..
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
[INFO] RetroArch 1.9.7 (Git 5c2f79a)
[INFO] === Build =======================================
[INFO] CPU Model Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4 SSE4.2 AES AVX
[INFO] Built: Jul 25 2021
[INFO] Version: 1.9.7
[INFO] Git: 5c2f79a
[INFO] =================================================
[INFO] [Input]: Found input driver: "dinput".
[INFO] [Core]: Loading dynamic libretro core from: "D:\Emulators\RetroArch-Win64\cores\px68k_libretro.dll"
[INFO] [Overrides]: Core-specific overrides found at "D:\Emulators\RetroArch-Win64\config\PX68K\PX68K.cfg".
[INFO] [Overrides]: No content-dir-specific overrides found at "D:\Emulators\RetroArch-Win64\config\PX68K\Street Fighter II' - Champion Edition [FD].cfg".
[INFO] [Overrides]: No game-specific overrides found at "D:\Emulators\RetroArch-Win64\config\PX68K\Street Fighter II' - Champion Edition (System disk).cfg".
[INFO] [Config]: Appending config "D:\Emulators\RetroArch-Win64\config\PX68K\PX68K.cfg".
[INFO] [Environ]: SET_CONTROLLER_INFO.
[INFO] [Environ]: SET_SUPPORT_NO_GAME: yes.
[INFO] [Environ]: GET_CORE_OPTIONS_VERSION.
[INFO] [Environ]: GET_LANGUAGE: "0".
[INFO] [Environ]: RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL.
[INFO] [Remaps]: Remap directory: "D:\Emulators\RetroArch-Win64\config\remaps".
[INFO] [Overrides]: Redirecting save file to "D:\Emulators\RetroArch-Win64\saves\Street Fighter II' - Champion Edition (System disk).srm".
[INFO] [Overrides]: Redirecting save state to "D:\Emulators\RetroArch-Win64\states\Street Fighter II' - Champion Edition (System disk).state".
[INFO] [Environ]: GET_LOG_INTERFACE.
[INFO] [Environ]: SYSTEM_DIRECTORY: "D:\Emulators\RetroArch-Win64\system".
[INFO] [Environ]: CORE_ASSETS_DIRECTORY: "D:\Emulators\RetroArch-Win64\downloads".
[INFO] [Environ]: GET_SAVE_DIRECTORY.
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[INFO] [Environ]: GET_RUMBLE_INTERFACE.
[INFO] [Environ]: GET_DISK_CONTROL_INTERFACE_VERSION.
[INFO] [Environ]: SET_DISK_CONTROL_EXT_INTERFACE.
[INFO] [Environ]: SET_FRAME_TIME_CALLBACK.
[INFO] [CONTENT LOAD]: Content loading skipped. Implementation will load it on its own.
[INFO] Version of libretro API: 1
[INFO] Compiled against API: 1
[INFO] [Audio]: Set audio input rate to: 44144.14 Hz.
[INFO] [Video]: Video @ fullscreen
[INFO] [Vulkan]: Vulkan dynamic library loaded.
[INFO] [Vulkan]: Found vulkan context: vk_w
[INFO] [Vulkan]: Detecting screen resolution 1920x1080.
[INFO] [Vulkan]: Found GPU at index 0: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Using GPU index 0.
[INFO] [Vulkan]: Using GPU: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Queue family 0 supports 16 sub-queues.
[INFO] [Vulkan]: Using resolution 1920x1080
[INFO] [Vulkan]: Using RGB565 format.
[INFO] [Shaders]: Specific shader preset found at D:\Emulators\RetroArch-Win64\config\global.slangp.
[INFO] [slang]: Compiling shader "D:\Emulators\RetroArch-Win64\shaders\shaders_slang\crt\shaders\crt-aperture.slang".
[INFO] [XInput]: Found XInput v1.4.
[INFO] [Joypad]: Found joypad driver: "xinput".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Video]: Found display server: win32
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[INFO] [SRAM]: SRAM will not be saved.
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_music_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_video_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_image_history.lpl].
[INFO] [Playlist]: Loading favorites file: [D:\Emulators\RetroArch-Win64\content_favorites.lpl].
[INFO] [Playlist]: Written to playlist file: D:\Emulators\RetroArch-Win64\content_history.lpl
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 800x600, aspect: 1.333, fps: 59.940, sample rate: 44100.00 Hz.
[INFO] [Audio]: Set audio input rate to: 44144.14 Hz.
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Input]: Game Focus => OFF
[INFO] [Environ]: SET_FRAME_TIME_CALLBACK.
[INFO] [Environ]: SET_GEOMETRY: 768x512, aspect: 1.333.
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 768x512, aspect: 1.333, fps: 55.500, sample rate: 44100.00 Hz.
[INFO] [Audio]: Set audio input rate to: 44100.00 Hz.
[INFO] [Video]: Timings deviate too much. Will not adjust. (Display = 60.00 Hz, Game = 55.50 Hz)
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Input]: Game Focus => OFF
[INFO] [Environ]: SET_FRAME_TIME_CALLBACK.
[INFO] [Overrides]: Configuration overrides unloaded, original configuration restored.
[INFO] [Core]: Content ran for a total of: 00 hours, 00 minutes, 16 seconds.
[INFO] Saving runtime log file: D:\Emulators\RetroArch-Win64\playlists\logs\PX68k\Street Fighter II' - Champion Edition (System disk).lrtl
[INFO] [Core]: Unloading game..
[INFO] [Core]: Unloading core..
[INFO] [Core]: Unloading core symbols..
[INFO] [Core Options]: Saved core options file to "D:\Emulators\RetroArch-Win64\config\PX68K\PX68K.opt"
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
Example log for screen 2:
[INFO] RetroArch 1.9.7 (Git 5c2f79a)
[INFO] === Build =======================================
[INFO] CPU Model Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4 SSE4.2 AES AVX
[INFO] Built: Jul 25 2021
[INFO] Version: 1.9.7
[INFO] Git: 5c2f79a
[INFO] =================================================
[INFO] [Input]: Found input driver: "dinput".
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[INFO] Version of libretro API: 1
[INFO] Compiled against API: 1
[INFO] [Audio]: Set audio input rate to: 48000.00 Hz.
[INFO] [Video]: Video @ fullscreen
[INFO] [Vulkan]: Vulkan dynamic library loaded.
[INFO] [Vulkan]: Found vulkan context: vk_w
[INFO] [Vulkan]: Detecting screen resolution 1920x1080.
[INFO] [Vulkan]: Found GPU at index 0: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Using GPU index 0.
[INFO] [Vulkan]: Using GPU: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Queue family 0 supports 16 sub-queues.
[INFO] [Vulkan]: Using resolution 1920x1080
[INFO] [Vulkan]: Using RGB565 format.
[INFO] [Vulkan]: Loading stock shader.
[INFO] [XInput]: Found XInput v1.4.
[INFO] [Joypad]: Found joypad driver: "xinput".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Video]: Found display server: win32
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [SRAM]: SRAM will not be saved.
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_music_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_video_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_image_history.lpl].
[INFO] [Playlist]: Loading favorites file: [D:\Emulators\RetroArch-Win64\content_favorites.lpl].
[INFO] [CONTENT LOAD]: Updating firmware status for: D:\Emulators\RetroArch-Win64\cores\px68k_libretro.dll on D:\Emulators\RetroArch-Win64\system
[INFO] [CORE]: Using content: D:\Extracted roms\Sharp X68000\Street Fighter II' - Champion Edition [FD]\Street Fighter II' - Champion Edition (Disk 1).hdm.
[INFO] [Core]: Content ran for a total of: 00 hours, 00 minutes, 00 seconds.
[INFO] [Core]: Unloading core..
[INFO] [Core]: Unloading core symbols..
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
[INFO] RetroArch 1.9.7 (Git 5c2f79a)
[INFO] === Build =======================================
[INFO] CPU Model Name: Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz
[INFO] Capabilities: MMX MMXEXT SSE SSE2 SSE3 SSSE3 SSE4 SSE4.2 AES AVX
[INFO] Built: Jul 25 2021
[INFO] Version: 1.9.7
[INFO] Git: 5c2f79a
[INFO] =================================================
[INFO] [Input]: Found input driver: "dinput".
[INFO] [Core]: Loading dynamic libretro core from: "D:\Emulators\RetroArch-Win64\cores\px68k_libretro.dll"
[INFO] [Overrides]: Core-specific overrides found at "D:\Emulators\RetroArch-Win64\config\PX68K\PX68K.cfg".
[INFO] [Overrides]: No content-dir-specific overrides found at "D:\Emulators\RetroArch-Win64\config\PX68K\Street Fighter II' - Champion Edition [FD].cfg".
[INFO] [Overrides]: No game-specific overrides found at "D:\Emulators\RetroArch-Win64\config\PX68K\Street Fighter II' - Champion Edition (Disk 1).cfg".
[INFO] [Config]: Appending config "D:\Emulators\RetroArch-Win64\config\PX68K\PX68K.cfg".
[INFO] [Environ]: SET_CONTROLLER_INFO.
[INFO] [Environ]: SET_SUPPORT_NO_GAME: yes.
[INFO] [Environ]: GET_CORE_OPTIONS_VERSION.
[INFO] [Environ]: GET_LANGUAGE: "0".
[INFO] [Environ]: RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL.
[INFO] [Remaps]: Remap directory: "D:\Emulators\RetroArch-Win64\config\remaps".
[INFO] [Overrides]: Redirecting save file to "D:\Emulators\RetroArch-Win64\saves\Street Fighter II' - Champion Edition (Disk 1).srm".
[INFO] [Overrides]: Redirecting save state to "D:\Emulators\RetroArch-Win64\states\Street Fighter II' - Champion Edition (Disk 1).state".
[INFO] [Environ]: GET_LOG_INTERFACE.
[INFO] [Environ]: SYSTEM_DIRECTORY: "D:\Emulators\RetroArch-Win64\system".
[INFO] [Environ]: CORE_ASSETS_DIRECTORY: "D:\Emulators\RetroArch-Win64\downloads".
[INFO] [Environ]: GET_SAVE_DIRECTORY.
[INFO] [Environ]: SET_PIXEL_FORMAT: RGB565.
[INFO] [Environ]: GET_RUMBLE_INTERFACE.
[INFO] [Environ]: GET_DISK_CONTROL_INTERFACE_VERSION.
[INFO] [Environ]: SET_DISK_CONTROL_EXT_INTERFACE.
[INFO] [Environ]: SET_FRAME_TIME_CALLBACK.
[INFO] [CONTENT LOAD]: Content loading skipped. Implementation will load it on its own.
[INFO] Version of libretro API: 1
[INFO] Compiled against API: 1
[INFO] [Audio]: Set audio input rate to: 44144.14 Hz.
[INFO] [Video]: Video @ fullscreen
[INFO] [Vulkan]: Vulkan dynamic library loaded.
[INFO] [Vulkan]: Found vulkan context: vk_w
[INFO] [Vulkan]: Detecting screen resolution 1920x1080.
[INFO] [Vulkan]: Found GPU at index 0: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Using GPU index 0.
[INFO] [Vulkan]: Using GPU: NVIDIA GeForce GTX 1660 SUPER
[INFO] [Vulkan]: Queue family 0 supports 16 sub-queues.
[INFO] [Vulkan]: Using resolution 1920x1080
[INFO] [Vulkan]: Using RGB565 format.
[INFO] [Shaders]: Specific shader preset found at D:\Emulators\RetroArch-Win64\config\global.slangp.
[INFO] [slang]: Compiling shader "D:\Emulators\RetroArch-Win64\shaders\shaders_slang\crt\shaders\crt-aperture.slang".
[INFO] [XInput]: Found XInput v1.4.
[INFO] [Joypad]: Found joypad driver: "xinput".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Video]: Found display server: win32
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[INFO] [Environ]: SET_INPUT_DESCRIPTORS:
[INFO] [SRAM]: SRAM will not be saved.
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_music_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_video_history.lpl].
[INFO] [Playlist]: Loading history file: [D:\Emulators\RetroArch-Win64\content_image_history.lpl].
[INFO] [Playlist]: Loading favorites file: [D:\Emulators\RetroArch-Win64\content_favorites.lpl].
[INFO] [Playlist]: Written to playlist file: D:\Emulators\RetroArch-Win64\content_history.lpl
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 800x600, aspect: 1.333, fps: 59.940, sample rate: 44100.00 Hz.
[INFO] [Audio]: Set audio input rate to: 44144.14 Hz.
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Input]: Game Focus => OFF
[INFO] [Environ]: SET_FRAME_TIME_CALLBACK.
[INFO] [Environ]: SET_GEOMETRY: 768x512, aspect: 1.333.
[INFO] [Environ]: SET_SYSTEM_AV_INFO: 768x512, aspect: 1.333, fps: 55.500, sample rate: 44100.00 Hz.
[INFO] [Audio]: Set audio input rate to: 44100.00 Hz.
[INFO] [Video]: Timings deviate too much. Will not adjust. (Display = 60.00 Hz, Game = 55.50 Hz)
[INFO] [XAudio2]: Requesting 64 ms latency, using 64 ms latency.
[INFO] [Display]: Found display driver: "vulkan".
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Font]: Using font rendering backend: freetype.
[INFO] [Input]: Game Focus => OFF
[INFO] [Environ]: SET_FRAME_TIME_CALLBACK.
[INFO] [Overrides]: Configuration overrides unloaded, original configuration restored.
[INFO] [Core]: Content ran for a total of: 00 hours, 00 minutes, 09 seconds.
[INFO] Saving runtime log file: D:\Emulators\RetroArch-Win64\playlists\logs\PX68k\Street Fighter II' - Champion Edition (Disk 1).lrtl
[INFO] [Core]: Unloading game..
[INFO] [Core]: Unloading core..
[INFO] [Core]: Unloading core symbols..
[INFO] [Core Options]: Saved core options file to "D:\Emulators\RetroArch-Win64\config\PX68K\PX68K.opt"
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
[INFO] [Video]: Does not have enough samples for monitor refresh rate estimation. Requires to run for at least 4096 frames.
How to fix?