UniPCemu build 2021/07/06 20:19 is now live!

A new version of UniPCemu is now out, with the latest bugfixes and improvements.

UniPCemu:

• Improved floppy read and write sector with implied seek to seek to the requested track if it thinks it's on a different track with implied seek enabled.
• floppy: Started implementing implied seek timings for read/write/format commands.
• floppy: Further improved implicit seeks using the implicit seek command.
• floppy: Implemented implied seek using the seek timings.
• floppy: Cleaned up unused implicit seek label.
• floppy: Improved implied seek to properly fill read/write sector results.
• Fixed floppy code.
• Fixed implied seek to properly not raise an IRQ when not supposed to during transfer.
• Faults during faults always set the EXT bit.
• ICEBP/INT1 never throws faults due to CPL being lower privileged than the interrupt descriptor table entry.
• Restored the EXT bit handling to give the old results again.
• Optimized the emulated CPU type detection to be faster.
• Modified the i430fx/i440fx chipsets to be able to work properly with a 80286 CPU (bypassing RAM for the required ROM area).
• Any fault raising a fault sets the EXT bit, no matter what fault is thrown.
• Implied seek doesn't clear the disk changed flag.
• Seeking without disk doesn't clear the disk changed flag.
• Improved floppy disk changed erroring out when processing read/write/format actions.
• Improved floppy disk formatting a read-only IMD disk image to properly handle it as read-only.
• Fixed floppy MSR positioning mode issues.
• More floppy positioning mode fixes.
• Improved floppy drive abort when ejected during a data command.
• Replaced disk changed checks with ejected during the current command checks.
• Fixed ejected during the current command checks to compile correctly.
• Set the external bit in protection faults using it for any level past the first level of faults.
• Implemented the settings menu options for setting up the gaming mode buttons with face button mapping support.
• Hardware interrupts always set the EXT bit in exceptions.
• Swapped ATA-1 multiplesectors and multiplemode variable naming. multiplemode is now the mode that's set using the set multiple ommand and multiplesectors is the mode used for the current transfer.
• Added configuration entries and settings menu options for the new gaming mode joystick setting for each face button.
• Don't show the modem and nullmodem settings in the settings menu when the network support isn't installed and ready to use.
• Added the modem listen port to the settings menu.
• Added the analog minimum range to the input settings menu.
• Split the CPU debugger settings into it's own CPU submenu.
• Cleaned up the CPU menu and it's item ordering and item numbers.
• Cleaned up the CPU debugger internal menu item ordering.
• Fixed up the CPU debugger settings menu option in the CPU Settings menu.
• Improved ending character for text inputs.
• Fixed the input cursor to use proper UTF-8 encoding.
• Fixed text input to use proper UTF-8.
• Updated Android gradle to the latest version.
• Improved Settings menu text attributes that were missing their correct colors.
• Properly abort generating a static image when shutting down the emulator.
• Improved dynamic image defragmenting to support termination through terminating of the app.
• Fixed dynamic disk image defragmenting to work correctly again.
• Improved cleanup during dynamic disk defragmentation.
• Improved logging during dynamic disk defragmentation.
• Fixed dynamic disk defragmenting detection of failed renaming of the defragmented disk image.
• Fixed floppy disk type setting cancelling to give correct results.
• Added informational text showing the raw analog stick inputs when selecting the analog minimum range setting to use.
• Widened text font dumps to 16 pixels for full SVGA dumps.
• Improved EGA CRTC readable registers.
• Disabled EGA index registere being readable.
• Improved Odd/Even mode planes wrapping.
• Improved EGA/VGA Odd/Even mode handling of A0.
• Improved EGA+ Odd/Even mode to support better A0 handling during Odd/Even modes.
• Improved video support for Odd/Even reads.
• Improved (S)VGA only invertion of the A0 bit from the Misc Output Register.
• EGA also inverses the Misc Output Register bit 5, setting A0 when it's cleared, clearing it otherwise.
• Fixed EGA port 3CA write to be graphics 2 position instead of feature control register.
• Fixed EGA port 3CC write to be graphics 1 position instead of miscellaneous output register.
• Use CPU address bit 14 instead of bit 16 in Odd/Even mode when in 64K RAM limiting mode.
• Improved EGA color monitor support.
• Fixed EGA graphics register 03h to use the correct amount of bits.
• Improved EGA/VGA light pen register support.
• Improved VGA EVRA bit support.
• EGA has input status #0 bit 7 and input status #1's display signals inverted according to the documentation.
• Improved EGA special CRTC register handling different from VGA.
• Improved EGA horizontal blanking end to properly match 5 bits instead of 6 bits.
• Fixed EGA/VGA CRTC register writes to work properly again.
• Improved EVRA to only take effect on reads, not on writes.
• Fixed the EGA graphics card colors to produce a correct DAC.
• Fixed the EGA palette to be using the proper colors.
• Improved EGA color monitor detection.
• Changed EGA switches to enhanced, only EGA monitor.
• EGA: Enable extended memory by default if more than 64K is installed.
• EGA has input status #0 bit 0 inverted compared to VGA.
• EGA uses a Display Disabled signal just like the VGA.
• Fixed EGA video MUX on the input status #1 register.
• Improved VGA video status mux inputs to match the EGA ones.
• Reverted the VGA video MUX inputs to their original state as documented.
• Improved the documentation on the EGA MUX input.
• Disable the DAC Output reporting on the MUX inputs when retracing.
• Undefined EGA behavior: when the attribute controller is in data mode, treat writes to port 3C1 the same as port 3C0.
• Fixed EGA 4-bit color modes using the Positive Sync Polarity.
• Fixed missing parentheses for the EGA 64-color DAC palette.
• Improved EGA overscan to also use the VSync polarity.
• Added extra paging fault bits for debugging.
• Improved page fault address for 32-bit objects.
• Improved page faults for dword accesses to become a proper byte granularity.
• Fixed paging 32-bit non-faulting detection.
• Fixed page fault inhibition when checking only.
• JMPF/CALLF with a register operand isn't allowed!
• Fixed JMPF/CALLF #UD to perform a correct return statement to compile.
• Optimized BIU requests buffering to always be 64-bit aligned.
• Decode the opcode of UD2 without ModR/M parameters.
• Opcode FF(GRP5) /7 has priority of #UD over addressed memory access faults.
• Improved i430fx/i440fx to have a faster reset command execution of the BAT. Normal BAT has unchanged timings.
• Updated the common emulator framework to the latest commit.

Common emulator framework:

• Improved LCTRL being pressed after RALT to be detected correctly with and without RALT having been pressed cases, with it still being properly ignored when simulated by RALT.
• Improved gaming mode entering to accept the face buttons as extra options for selecting different mappings for gaming mode.
• Added missing PSP OSK keys for rwin, rctrl, ralt and rshift.
• Fixed PSP OSK lwin key to use the correct name and key.
• Made the Gaming Mode Joystick vs Normal input setting to be specified for each of the face buttons.
• Improved text handling of starting active output on a new line.
• Added support for UTF-8 to the text display (although limited to 8-bit character codes for compatibility).
• Fixed UTF-8 parsing of the initial UTF-8 byte.
• Fixed OSK unicode characters.
• Improved parsing of extended ASCII characters.
• Made the GPU text surface border color become the border color of the foreground pixel instead of the border pixel.
• Fixed OSK Windows and Apps character codes.
• Improved the OSK to properly support UTF-8.
• Improved displaying of unsupported character codepoints to resolve to a question mark.
• Made raw inputs available to the applications using the common emulator framework.
• Improved i430fx/i440fx to have a faster reset command execution of the BAT. Normal BAT has unchanged timings.
• Fixed UTF8 code point warnings.

The most important of these updates being:

• Proper ctrl key handling on supporting keyboards.
• All builds now properly display special extended ASCII characters on screen.
• The cursor of text input in the admin menus is now properly working on all platforms.
• BIOS menu font colors are now improved.
• All possible configuration settings (other than the packet server settings themselves) are now configurable from within the Settings menu.
• IBM EGA is now properly emulated.
• Gaming mode now has more options for mapping up to five different gaming input modes.
• Various CPU bugfixes have been made.
• Floppy disk emulation has been improved.