XRoar, a Dragon and Tandy 8-bit computer emulator
XRoar emulates the Dragon 32/64; Tandy Colour Computers 1, 2 and 3; the Tandy MC-10; and some other similar machines or clones. It runs on a wide variety of platforms. More features.
Source code version 1.4.2, released 2023-06-16: xroar-1.4.2.tar.gz. Other downloads.
Debian snapshot builds are available in the Apt repository.
Ubuntu snapshot builds are available in this PPA on Launchpad.
Mac OS X binaries: 64-bit x86 Mac OS X (built under 10.13)
Windows binaries: 64-bit Windows, 32-bit Windows (cross-built using MinGW)
git clone https://www.6809.org.uk/git/xroar.git
The manual is available in these formats: PDF and HTML. See Getting started for a quick guide to running XRoar. See Building from source for instructions on building from source. Be sure to read about any Recent changes.
Some loose notes about cross-compiling for Windows using Debian: Building XRoar for Windows.
Firmware ROM images are required to usefully run this emulator. If you have difficulty extracting these from your real Dragon, CoCo or MC-10, dumps may be available from the Dragon Archive or the Color Computer Archive.
Important: since version 1.3, the floppy disk image write-back behaviour has changed. See Recent changes in the manual.
asm6809 is a 6809 assembler that can generate machine code to run on the Dragon.
Want a Dragon in your browser? Try XRoar Online.
Notes for version 1.4
- NTSC colour tweaks for slightly better "cyan"
- Initial support for middle-button paste
- Add brightness, contrast, saturation & hue controls to GTK+ and Windows UIs
- Add gain/volume controls to GTK+ and Windows UIs
- New options: -vo-brightness, -vo-contrast, -vo-colour, -vo-hue
- New tape control & drive control windows in Windows UI
- GIME: implement bug in 16-colour, 16 byte-per-row modes
- New option -vo-pixel-fmt specifies pixel layout and bit depth
- Old NTSC-only composite renderer renamed -ccr partial
- New composite renderer that handles PAL used for -ccr simulated
- WD279x: write sync bytes before DAM (fixes written-to DMK) [Michael Furman]
- New option: -no-vo-colour-killer
Fixes in version 1.4.1
- Fix composite colour switching in -ccr simple and -ccr 5bit [Keith Palmer]
Fixes in version 1.4.2
- Fix running with -ui null
For version change history, see the ChangeLog.
[n] - reported by, [by n] - contributed by, [with n] - developed with.
License: GNU GPL version 3 or later <http://www.gnu.org/licenses/gpl-3.0.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Binary packages may be linked against SDL and/or libsndfile.
- Local copy of SDL source code: SDL2-2.0.16.tar.gz.
- Local copy of libsndfile source code: libsndfile-1.0.31.tar.bz2.
Android APK: xroar-0.31.1-1.apk
Android port contributed by Tormod Volden. For more information see its readme.txt. For patches, etc., check out Tormod's website.
drHirudo has ported XRoar to AmigaOS 4 (!), available here.
Stefan Haubenthal has uploaded a build for MorphOS to aminet.
ZX-81 has ported version 0.19 to the Sony PSP and GP2X handhelds. Check for "Tandy Coco" in the list of categories on ZX-81's web site.
MAME emulates a variety of old computer hardware, Dragon included. Source available.
T3 and PC-Dragon, two DOS-only emulators. Source code is available for PC-Dragon, but redistribution of modified copies is not permitted, amongst other restrictions. T3 is closed source (I believe it was written in x86 assembly). These links are to a software collection site, as the original seems to have disappeared.
VCC, a Windows-only CoCo 3 emulator. Does not emulate CoCo 1/2 (beyond what compatibility a CoCo 3 had) or Dragon. Open-sourced around August 2015.
OVCC develops the open-sourced version of VCC in an attempt to make it cross-platform. CoCo 3 only, like the original.