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Nov 14, 2021 · Note that starting with 4.00, Altirra requires at least Windows 7. For Windows XP and Vista users, there is also a 3.91 maintenance release at the above link, which contains backported changes from 4.00 of critical bug fixes and the latest version of AltirraOS.
- Features
- Before You Begin
- System Requirements
- Downloads
- Acid800 Test Suite
- Reference Manual
Emulates the Atari 400/800, 1200XL, 600/800XL, 130XE, XEGS, and 5200 systems.Full, cycle-exact emulation of all documented hardware features.Best-in-class emulation accuracy of undocumented hardware behavior, including undocumented 6502 instructions, precise DMA timing, mid-screen register changes, hardware bugs, and cycle-precise timer...Support for most popular 8-bit image file formats: ATR, ATX, ATZ, DCM, XFD, PRO, ARC, BAS, ROM, BIN, A52, CAS, SAP.Altirra is designed with emulation quality in mind, sometimes over speed and polish. It's designed as a system emulator and debugger instead of a games machine, so there is some setup involved. There is a README file in the archive, but here are some quick tips: First: Software.you need some actual 8-bit Atari (not Atari ST!) software to run. If yo...
Altirra has relatively few system requirements: 1. Windows 7, 8, 8.1, 10, 11 or later, either 32-bit (x86) or 64-bit (x64 or ARM64). (Windows RT not supported) 2. Intel Pentium 4 or AMD Athlon 64 CPU or better (SSE2 required), or Qualcomm Snapdragon 835 or newer (ARM64 version). 3. Graphics card supporting DirectX 9.0 with pixel shader 2.0 or later...
Altirra is licensed under the GNU General Public License (GPL), version 2. Binaries, i.e. stuff you can run (all local downloads): Source code (i.e. stuff programmers can modify and compile). This includes the source code to AltirraOS, Altirra BASIC, and all of the utilities on the Additions disk.
Acid800 is a test suite designed to stress 8-bit Atari emulators. It tests a wide variety of program-visible hardware behaviors and reports any deviations from actual hardware behavior, such as missing features or incorrect timing. Acid800 can be run either as a full suite or as standalone tests, with symbols and source included. Also included are ...
Hardware reference manual
This is a document describing all of the interesting behavior I've discovered in the Atari 8-bit hardware.
BASIC reference manual
This is the manual for Altirra BASIC, the BASIC interpreter embedded within the emulator.
Dec 30, 2023 · Version 4.20 final of my emulator Altirra has been released at the usual place: https://www.virtualdub.org/altirra.html Highlights: New device support: 1400XL/1450XLD modem and disk drive, 835 and 1030 modem full emulation, SIDE 3.1, SuperSALT T...
Altirra is the best Atari 8-bit emulator we have seen so far, for playing Atari 8-bit games on a Windows PC. Latest version 4.20 (29 December 2023) Works on Windows 11, Windows 10 and older (32/64 bits) Emulates Atari 400/800/1200XL/600XL/800XL/65XE/130XE/5200, depends on the used ROM file.
Jun 15, 2020 · The new minimum operating system requirement is Windows 7 SP1. End of support for DirectDraw, which has not been native since Vista, and OpenGL, of which only old versions were used anyway (and was not enabled by default).
Aug 11, 2018 · The goal of this exercise is to install and try the Altirra 8-bit Atari emulator. You might also try Atari800. I have less experience with this one. Altirra was programmed by Avery Lee to emulate the Atari 400, 800, XL, and XE computers as well as the XEGS game system.
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Altirra, an emulator for Atari 8 bit running on the Windows OS. Download all Altirra files for free!
