MartyPC v0.2.0

MartyPC v0.2.0 is released. MartyPC is a cross-platform IBM PC emulator written in Rust. Development began April, 2022. It should build on Windows, Linux and MacOS (Including M1)

MartyPC Changelog:
New Features
New Display Manager Framework
New graphics backend abstraction layer will eventually allow frontends built for other graphics backends such as
SDL
New scaling modes: Choose from Fixed, Integer, Fit and Stretch scaling options
Display Apertures: Choose how much of the emulated display field you wish to see:
No overscan
'Monitor-accurate' overscan
Full overscan
Full display field including hblank and vblank periods (for debugging)
Hardware aspect correction: Aspect correction is now performed in the shader for reduced CPU load
Multi-window support: Define additional output windows in the configuration file
Multiple windows can display the same video card, with different display options
Windows can be set to a fixed size or scale factor, or made completely resizable
Windows can be pinned 'always on top'
Windows can be toggled full-screen via CONTROL-ALT-ENTER hotkey
Shader support: A basic CRT shader is built into the new display scaler
Internal shader features:
Barrel distortion
Corner radius (rounded corners)
Monochrome phosphor simulation
Scanline emulation synchronized to emulated video resolution
Presets for the internal scaler can be defined in configuration and applied to different windows
New ROM Definition Framework
ROM set definitions are no longer hardcoded. They will be read from ROM set definition TOML files in the ROM
directory.
Add your own custom ROM sets or contribute missing ROM definitions to MartyPC!
New Machine Configuration Framework
Define multiple Machine hardware configurations, name them, select them in the main config or via command line
argument.
Configure the amount of conventional memory, the number and type of floppy drives, video cards, serial ports and
more!
New Resource Manager Framework
Paths are to 'resource ids' are now fully configurable, and facilities to build file trees are provided.
MartyPC can create needed directories on startup. The Floppy and VHD browsers have been rewritten to take
advantage of this new system, and so now you can organize your media directories into subdirectories for
convenience.
EGA Video Card
EGA is back! A character-clocked EGA implementation is here, although it may still be a bit rough around the
edges.
EGA will continue to be polished in upcoming releases.
Features:
Functional emulation of each of the 5 LSI chips on the EGA
Per-scanline Pel panning - effects like the wibble in Beverly Hills Cop work
Line compare register - See the status bar in Catacombs 3d!
CGA compatibility mode - Play Alleycat!
Software fonts - change your DOS font, or see a graphical mouse cursor in text mode (Norton Utilities 6.0)
Known issues:
Visual glitches with n0p's Windows 3.0 EGA driver patched for 8088
Some more obscure registers not properly emulated / investigated (SOM, etc.)
Aperture definitions / adjustments not final
Implementation may be slow in parts - more optimization needed (SIMD?)
MDA Video Card
Not quite as a flashy as EGA, but the MDA card type is now also supported, and moreover, you can install an MDA
alongside a CGA or EGA card for a dual head display.
9th column rendering and underline attributes supported
Includes the framework for a LPT port, which will now be detected
Known issues:
Needs optimization - due to the 9-dot character clock making 64-bit aligned writes impossible, MDA is
currently slower to emulate than EGA.
New Keyboard System
MartyPC now performs low-level emulation of a Model F keyboard instead of directly translating OS input events to
the core
Model M emulation to come
Configurable typematic rate and delay
International keyboard layouts are now supported via translation files.
Translation files support all keycode names defined by w3c: https://w3c.github.io/uievents-code/#code-value-tables
Translation files can define direct scancode mappings or full macros
Initial translation files include US, UK and IT layouts. More to come. Help appreciated!
Configurable hotkey support
Debugger/GUI Improvements
Reorganized Debug menu
Improved appearance of CPU State display
Instruction Trace: In Csv trace mode, instruction trace now has a scrolling table with optional columns
Memory Viewer: Fixed scrolling issues, disassembly popup now uses fixed-width font
IVT Viewer: Fixed scrolling, IVT entries now animate on change, added annotations
Instruction History - fields now align with Disassembly View, and cycle counts have been moved to the right
Memory Viewer will now show values for memory mapped regions
Improved VHD creator - should no longer be confusing to use
Text Mode Viewer - View ASCII contents of video memory, which you can select and copy to clipboard
New themes courtesy of egui-themer crate
New notification system courtesy of egui-notify crate.
Implemented success/error notifications for disk and file operations, screenshots, etc.
Frontend Bug Fixes / Improvements
Implemented configurable CPU halt behaviors
Re-added CTRL-ALT-DEL menu option
New benchmark mode (enable in martypc.toml, or use --benchmark-mode)
Floppy and HDD browsers now support subdirectories
Write protection can be toggled for floppy drives with configurable default
Sound initialization is now optional
Added 8088 JSON CPU test generator and validator
Used to create the first comprehensive test suite for the Intel 8088
Added debug_keyboard config flag - this will print keyboard event info to the console for support
Core Bug Fixes / Improvements
CPU: Refactored general registers to union types (not any faster, but code is somewhat cleaner)
CPU: Refactor PC from u32 to u16 to address segment wrapping issues, implement ip() in terms of PC
CPU: Instruction counts properly increment even when instruction history is off
CPU: Fixed device ticks after interrupts
CPU: Improved Halt/Resume logic and cycle timings (Thanks Ken Shirriff)
CPU: New sigrok cycle log format for viewing cycle logs in sigrok PulseView logic analyzer
CPU: Updated disassembler to normalize output against iced-x86. Now resolves negative immediates and displacements
CPU: Fixed typo for 'bp+di+DISP' in both disassemblers (Thanks Tom Harte)
CPU: Brand new, simplified BIU state logic (which now needs to be rewritten, again...)
CPU: Fixed & Improved DMA refresh scheduling. (Fixes 8088MPH CPU test)
CPU: Fixed issue where Call Stack could grow uncontrollably with recursive code or interrupts
CPU: Fixed CS:IP reporting in Instruction trace mode logs
CPU: Fixed memory leak in Instruction trace mode (thanks Folkert)
CPU: Fixed CPU cycle timings for LES and LDS instructions
CPU: Fixed CPU issue where incorrect microcode jump was listed for fixed word displacements
CPU: Fixed CPU issue where a prefetch abort would not properly override a prefetch delay
PIC: Revised edge-triggered mode to lower INTR if last unmasked IR line goes low
PIC: Ignore IMR during INTA pulse
PIC: Handle multiple IRR bits being unmasked at the same time
PIC: Honor IRQ offset specified in IWC2 to PIC (Thanks Folkert)
PIT: Simulate counter write latency. A delay tick will be inserted if a write occurs too close to falling edge of
clock
PIT: Revised count register loading logic. Counting element uses internal reload value
CGA: Properly model CRTC last-line flag when hcc < 2
CGA: Preliminary CGA snow emulation. Not yet 100% accurate
CGA: Properly disable cursor if cursor start > maximum scanline
CGA: Reverted color palette entry for black from dark gray to true black
CGA: Fully reset the CGA device on reboot. May(?) fix issue with black screens in 8088MPH. (Thanks hirudov)
CGA: Don't recalculate composite parameters if mode change was enable bit only
Xebec HDC: Proceed from Reset state to WaitngForCommand after a delay (Fixes Minix boot issue)
Xebec HDC: Implemented missing Read Sector Buffer command (Fixes panic in IBM diagnostics)

Download: MartyPC v0.2.0
Source: Here