6e282068b9
1. In the STG code, separated the STG1703 without its built-in clock as 1702 while keeping the one with the clock as 1703. 2. Added the ICS2494AN-324 clock generator used by the et4000w32 series. 3. Return 0x98 as the ID of the ATT498 ramdac. 4. Corrected the pixel clocks of the IBM RGB528 while keeping its current compatibility and exactness of the refresh rates of its clocks. 5. Added a variable reference clock of the SDAC/GenDAC for future use. 6. The clocks of the TVP3026 have been implemented for a while. Some corrections have been made (plus color key r/w). 7. Mach64 enhanced mode doesn't use scrollcache (bits 0-3 of attrregs 0x13), fixes some pixels being off (mainly in win3.1x) 8. Reorganized the cirrus 54xx built-in clock for proper refresh rates. 9. Proper reorganization of the et4000w32 series of chipsets and their cards supporting them, from cursor to clocks to ramdacs plus a 24bpp acceleration fix for the w32p series (about pixels being processed in bitblt). 10. Removed the PCI videomagic card as its bios doesn't have the PCIR header while making sure the plain ISA/VLB w32 and ISA only w32i (now named Axis Microdevice) support 2mb of vram properly. 11. Added the Hercules Dynamite VL Pro based on the w32i chip (and VLB). 12. Initialize the et4000w32 cards with misc bit 0 set as well as crtc31 bit 6 for rs2 connection to the ramdac. 13. Refactored the S3 Pre-ViRGE code to have proper refresh rates and clocks and added the 805I as a member of the chips (ID 0xa8). 14. Replaced the S3 805I Elsa Winner 1000 ISA bios with a more supported one for our code using the SDAC. 15. Added proper 24bpp acceleration to the Visionx68 chips. 16. Fixed wrong colors in the 911/924 15/16bpp acceleration when used for the first time. 17. Match the ViRGE mapping to the pre-ViRGE one per manual/datasheet. 18. Correct as best as possible the TGUI9400 clocks.
86Box
86Box is a low level x86 emulator that runs older operating systems and software designed for IBM PC systems and compatibles from 1981 through fairly recent system designs based on the PCI bus.
Features
- Easy to use interface inspired by mainstream hypervisor software
- Low level emulation of 8086-based processors up to the Mendocino-era Celeron with focus on accuracy
- Great range of customizability of virtual machines
- Many available systems, such as the very first IBM PC 5150 from 1981, or the more obscure IBM PS/2 line of systems based on the Micro Channel Architecture
- Lots of supported peripherals including video adapters, sound cards, network adapters, hard disk controllers, and SCSI adapters
- MIDI output to Windows built-in MIDI support, FluidSynth, or emulated Roland synthesizers
- Supports running MS-DOS, older Windows versions, OS/2, many Linux distributions, or vintage systems such as BeOS or NEXTSTEP, and applications for these systems
Minimum system requirements and recommendations
- Intel Core 2 or AMD Athlon 64 processor or newer
- Windows version: Windows 7 Service Pack 1 or later
- Linux version: Ubuntu 16.04, Debian 9.0 or other distributions from 2016 onwards
- macOS version: macOS High Sierra 10.13 or newer
- 4 GB of RAM or higher
Performance may vary depending on host and guest configuration. Most emulation logic is executed in a single thread. Therefore, systems with greater IPC (instructions per clock) capacity should be able to emulate higher clock speeds.
For easier handling of multiple virtual machines, use a manager application:
- Avalonia 86 by notBald (Windows and Linux)
- 86Box Manager by Overdoze (Windows only)
- 86Box Manager X by xafero (Cross platform Port of 86Box Manager using Avalonia)
- sl86 by DDX (Command-line 86Box machine manager written in Python)
- Linbox-qt5 by Dungeonseeker (Linux focused, should work on Windows though untested)
- MacBox for 86Box by Moonif (MacOS only)
To use 86Box on its own, use the --vmpath/-P command line option.
Getting started
See our documentation for an overview of the emulator's features and user interface.
Community
We operate an IRC channel and a Discord server for discussing 86Box, its development, and anything related to retro computing. We look forward to hearing from you!
Contributions
We welcome all contributions to the project, as long as the contribution guidelines are followed.
Building
For instructions on how to build 86Box from source, see the build guide.
Licensing
86Box is released under the GNU General Public License, version 2 or later. For more information, see the COPYING file in the root of the repository.
The emulator can also optionally make use of munt, FluidSynth, Ghostscript and Discord Game SDK, which are distributed under their respective licenses.
Donations
We do not charge you for the emulator but donations are still welcome: https://paypal.me/86Box.
You can also support the project on Patreon: https://www.patreon.com/86box.