Posts on WinFellow - Amiga Emulator for Windows

Legacy Fellow releases

Sun, 14 Apr 2024 05:49:00 +0000

We sometimes get asked about older releases of Fellow for DOS as well as WinFellow, for a variety of reasons. As many of these are no longer readily available in a convenient location, we have decided to publish a few here. For this reason, a new History section has been established that you can visit in the menu at the top. The history section is a work in progress, let us know if you notice any issues or factual mistakes within it.

WinFellow v0.5.11 released

Thu, 28 Mar 2024 05:49:00 +0000

There is a new public release of WinFellow v0.5.11 in the GitHub releases section; it had been published earlier as release candidate 1.

Compared to the earlier version 0.5.10, the following changes are included in this build:

New features

the default display driver was changed from DirectDraw to Direct3D 11, where supported
implemented support for keyboard-initiated reset in Amiga Forever

Bug Fixes

improved logging in case of failure to initialize Direct3d graphics driver
fix several issues related to creating, loading, applying and saving configuration files
fix potential memory leaks
implement more failure checks for Direct3D initialization
fix crash to desktop when using an emulated joystick in Amiga Forever

Maintenance updates

WinFellow v0.5.10 released

Wed, 04 Oct 2023 05:49:00 +0000

There is a new public release of WinFellow v0.5.10 in the GitHub releases section; it had been published earlier as release candidate 1.

Compared to the earlier version 0.5.9, the following changes are included in this build:

New features

a native ARM64 build of WinFellow is now provided as part of the release zip archive

Bug Fixes

Thanks to the availability of Toni Wilen’s cputester, the following mostly CPU related issues from the basic tests could be addressed:
- Removed address register as byte source operand in move.
- Various bit-field instruction fixes.
- Incorrect pack/unpk behaviour.
- Trapcc increase pc after condition check to get correct exception stack frame.
- Cas2 select the first compare result value when both compare registers are the same register. Set v flag.
- Link/Unlk incorrect result on stack when link register was a7.
- Split long reads in two word reads for correct values across banks that are not stored consecutively.
- VPOS wraparound fix.
- Exception cycle time changes.
- Fixed various instructions that overwrote exception cycle times with regular instruction time. (when triggering privilege violations etc.)
- Set div cycle times to values closer to the listed cycle times. Still not dynamically calculated, but should be closer.
- Don’t trace when instruction was aborted by illegal, privilege or address error.
- CHK.w N flag fix.
- EOR ea vs. data register check for cycle calculation was inverted.
- Changes to cycle calculation for BSET/BCGH.
- Set undefined div flags according to behaviour on 68000.
- Move to SR, check supervisor level before evaluating ea.
- Include exception time in cycle time for chk.
- Handle bkpt differenly from illegal.
- Broken overflow and other special cases for mull.
- Handle supervisor check differently for move from sr to avoid returning result when throwing exception.
- Missing address mask in rtarea memory handling (for when upper address byte contains data).
- Trapcc had wrong pc in the stack frame.
fixed mouse capture for older RetroPlatform hosts

Maintenance updates

WinFellow v0.5.9 released

Mon, 04 Sep 2023 05:49:00 +0000

There is a new public release of WinFellow v0.5.9 in the GitHub releases section; it had been published earlier as release candidate 1.

Compared to the earlier version 0.5.8, the following changes are included in this build:

System requirement changes

support for Windows XP and Vista has been removed; version 0.5.8 will be the last WinFellow release to support Windows XP or Windows Vista. This enables us to take advantage of enhancements in the toolset used during development and testing.

New features

WinFellow v0.5.8 released

Fri, 12 Jul 2019 05:49:00 +0000

There is a new public release of WinFellow v0.5.8 in the GitHub releases section; it had been published earlier as release candidate 1.

Compared to the earlier version 0.5.7, the following changes are included in this build:

New features

support for RDB hardfiles was implemented; while creating a new hardfile from the WinFellow GUI still creates “plain” hardfiles, a Rigid Disk Block can be created using tools like HD Toolbox
the default naming scheme for filesystem devices has been changed from DHx: to FSx: to avoid naming conflicts with existing RDB hardfiles
a 64 bit build is now provided; the NSIS installer will install either the 32 or 64 bit version depending on the operating system that is used

Bug fixes

WinFellow v0.5.7 released

Tue, 02 Jan 2018 16:00:00 +0000

Bug fixes:

floppy code was updated to use a track limit > 80; it will output random data beyond track 80 - fixes Outrun/The Games: Summer Edition; also added missing checks for disabled drives, fixing Winter Olympics 94
fixed a bug where unexpected pixel format flags besides RGB stopped DirectDraw initialization
several bugs in the screenshot code were fixed; standalone screenshots were not saved correctly in D3D mode, and used with Amiga Forever raw screenshots were missing screen areas due to faulty initialization of the internal clipping areas
fixed screen area mismatch when Amiga Forever region/size settings are both set to auto; auto clipping is still not supported
CPU instruction fixes:
- fixed a signed bug in 64-bit division
- minor timing adjustment for btst
CIA event counter changes according to documentation
the project files were updated to Visual Studio 2017

Please see the included file ChangeLog.txt for a full list of changes, including minor bug fixes which are not listed above.

WinFellow v0.5.6 released

Sun, 12 Nov 2017 14:23:00 +0000

New features:

Amiga Forever 2017 support modules were updated to the latest version, improving Amiga Forever input device handling by reducing lag

Bug Fixes:

improve support for IPF images (align disk words to sync if sync is found on an odd boundary)

Please see the included file ChangeLog.txt for a full list of changes, including minor bug fixes which are not listed above.

WinFellow v0.5.4 released

Sat, 11 Mar 2017 18:15:00 +0000

New features:

re-designed display settings to make use of modern higher resolution displays more intuitive; instead of configuring a window resolution, scaling and overscan area can be configured automatically to create a window of the optimal size and scaling factor; both can also be configured manually to arrive at frequently window sizes
support for the Direct3D 11 graphics API; this requires DirectX 11 to be installed
- on Windows Vista, the platform update KB971644 should be installed, as it contains required updates to DirectX
- the graphics card has to provide hardware acceleration for Direct3D
ability to save screenshots to the pictures folder (hit < Print Screen > to trigger)
support for automatic, as well as 3x and 4x scaling, which is useful for 4K/high DPI displays; for the best results, try leaving the scaling at automatic
very basic serial port/UART emulation; nothing can be connected to the serial port; this is mostly used for serial debug logging (which is active only in debug builds of WinFellow), but the port is always being emulated

Bug Fixes:

WinFellow has a new home

Tue, 12 Jan 2016 06:43:18 +0100

WinFellow development has found a new home on GitHub; please update your bookmarks accordingly.

Downloads for older releases are still available at SourceForge for reference; for future news and updates, please visit us here.

The GitHub source code repository is available here.

Future releases of WinFellow will be published in GitHub’s releases section.