Introductory Notes

There are many TRS-80 emulators out there for various operating systems. The top few on this list are excellent and any of them will provide you with an accurate emulation experience. Like every product out there, however, not every emulator emulates everything, and there are some features present in one which are not present in the other. This may mean you need to use 2 different emulators if you want to use all the features. The following is a short intro to what one top Windows emulator has that the other top Windows emulator does not. Anything not on the list means they can both do it.


Feature Comparison

Feature
TRS32
TRS80GP
Run at full PC speed
No
Yes
Model III High Speed Cassettes
No
Yes
Built-in Z-80 debugger
No
Yes – Supports
  • Tracing
  • Disassembling
  • Profiling
  • Memory dumping
Emulate hard drives
Yes
No
Support Joysticks
  • Trisstick
  • Alpha Products
No
Offer 1MB support in Model 4 mode.
Yes
No
Convert Epson printer output for use in a real printer and/or on a virtual screen
Yes
No
Emulate Stringy Floppy
Exatron
Acculab
Emulate Real Time Clock
  • Smartwatch
  • Newclock80
No
Emulate TRS-80 Mice
Yes
No
Emulate (i.e. pass through) TRS-80 RS232 commands to a PC serial port.
Yes
No
Offer or allow seeing what track/sector the busy disk drive might be on.
Yes
No
Capture Output
Screencap
  • Screencap
  • Animated GIF
  • Flash
  • AVI
Save Emulator State
Yes
No

Model I/II/III/4 Emulator for Windows (Runs on MAC and OSX with Wine)

General Information

Version:
2.1.2
Last Updated:
July 2019
Download:

trs80gp emulates the “gray” line of TRS-80 computers made by Tandy in the late 1970s and early 1980s. They are known as the Model I, Model II, Model III, Model 4, Model 4P and Model 4D. It is generally easier to refer to them as the Model 1, Model 2, Model 3 and Model 4. The Model 1, 3 and 4 are a line of compatible computers. The Model 2 has its own line of compatibles including the Model 12, 16 and 6000 which are not yet emulated by trs80gp.

The emulator runs under Windows 10 and probably works on Windows 8, 7, Vista or XP. I’ve also heard it runs fine on OSX and Linux machines using Wine. It should run well on any machine produced in the past 7 or 8 years.

trs80gp provides accurate and near complete emulation with excellent programmer support. The source code is fully organic and hand-crafted by myself and my brother Peter.

Features:

  • Emulates floppy disk, cassette, Aculab Floppy Tapes, hires graphics, orchestra 80 and printer.
  • Window scalable to any size with realistic phosphor-dot rendering.
  • Near perfect video emulation including beam drop-outs, wait states and various other subtle effects.
  • Can visually indicate Z-80 video memory conflicts.
  • Cycle perfect sub-instruction Z-80 and video timing.
  • Built-in Z-80 debugger with source level debugging using zmac .bds output.
  • Switchable turbo mode for high speed yet still accurate operation.
  • Auto-turbo modes to go fast during slow operations (e.g., disk, cassette) and back to normal when typing.
  • AVI and FLV (Flash) video capture.
  • GIF and animated GIF screenshot capture.
  • Audio capture to WAV file.
  • Load programs directly from command line for fast development and testing.
  • Can both “paste” and send files as input to keyboard (aka “fast type”).
  • “Cut” to copy the screen in ASCII, Unicode or graphics format.
  • Keyboard selectable between normal and game mode.
  • Software keyboard to get around limits of PC keyboards.
  • Brightness, contrast and display colour controls.
  • Batch mode and command line input to automate tasks.
  • Can open files and disk images within .zip archives.
  • Optional emulator extensions provide memory protection and timing to the Z-80. And emulator exit.
  • Bus tracing, disassembling, profiling, memory dumping and other features for reverse engineering and debugging.
  • Can be set to run as fast as your PC can handle, yet keeping drive access and keyboard access functional.
  • Emulates a Model II
  • Built in IMPORT and EXPORT to and from PC directory

XTRS Model I/III/4 Emulator for Unix

General Information

Author:
Tim Mann
Download:
ZIP or TAR.
Version:
4.9d
Last Updated:
June 15, 2009

xtrs is a Radio Shack TRS-80 Model I/III/4/4P emulator for Unix and the X Window System. It includes lower case, the real time clock, hi-res graphics, serial port, parallel printer, mouse, cassette, sound and music output (requires OSS), 5″ and 8″ floppy disk drives in single and double density, and even hard disk drives. The emulated floppy and hard disk file formats are compatible with the popular MSDOS-based emulators by Jeff Vavasour and Matthew Reed, and (if you choose a capable enough file format), all features of the original TRS-80 floppy disk controller are emulated. Under Linux, physical floppy disk drives are also supported. Physical cassettes can be read and written too.

Features:

  • Windows and Mac OS X support.
  • Fullscreen display
  • Text based GUI on Windows and Linux, and in Fullscreen mode on the Macintosh.
  • Configuration files.
  • Disk LED Indicators on screen.
  • Creation of Disk images inside of the program.
  • Saving and loading of disk sets.
  • Saving and loading of emulator state.
  • Copy and Paste of text to/from host and emulator.
  • USB Joystick support.
  • Graphical interface, include Media management with graphical representation of the disk drives and cassette [MAC Only]
  • Printer emulation of Epson FX-80 and CGP-115 Plotter/Printer, with output to PDF files. [MAC Only]
  • Debugger in separate program window. [MAC Only]
  • TRS-80 Model I, III, and 4/4p emulation.
  • Emulated cassette drive.
  • Emulated 5″ and 8″ floppy disk drives.
  • Emulated Hard Drives.
  • Data Import and Export from Host.
  • Sound emulation.
  • Mouse emulation.
  • Joystick emulation.
  • Printer emulation.
  • Debugger.

TRS32 Model I/III/4 Emulator for Windows

General Information

Author:
Version:
1.28
Last Updated:
August 20, 2013
Download:

Features:

  • Is a native Windows application (features such as sound and joystick support will work on all hardware, and you can run the emulator concurrently with other Windows applications without any adverse effects)
  • Emulates the Model I (Levels I and II), Model III (Levels I and II), Model 4, and Model 4P with a variety of hardware add-ons, including doublers, graphics boards, joysticks, and additional memory
  • Provides complete and “cycle accurate” hardware-level emulation (even protected disks work without problems)
  • Includes optional realistic TRS-80 disk drive sound
  • Supports all popular virtual disk (.DSK) formats
  • Includes support for the rare Level I Model III
  • Includes emulation of the Exatron Stringy Floppy
  • Includes cut/paste of TRS-80 screen contents
  • Supports true Model 4P Mode
  • Hovering the mouse cursor over the floppy drive indicator light in the status bar will display the current drive status and position

Unregistered Shareware Version:

  • Works under all current versions of Windows
  • Full Windows application – no low-level hardware conflicts!
  • Model I, Model III, and Model 4 emulation
  • Four floppy disk drives (with optional realistic disk drive sound)
  • Cassette tape drive with graphical on-screen controls
  • Printer support
  • Serial port for RS-232 communications
  • Joystick support (using a Windows joystick – TRISSTICK and Alpha Products joysticks are emulated)

Registered Version:

  • All features included in the shareware version
  • High resolution graphics (Radio Shack and MicroLabs)
  • Up to 1 megabyte of additional memory in Model 4 mode
  • Hard disk support
  • Orchestra 85/90 music generation
  • Built-in emulation of an Epson FX-80 dot matrix printer (including graphics and control codes)

SHARP-80 Model III Emulator for Windows (Updated 3/9/2017)

General Information:

Version:
1.1.0.99

Features:

  • Complete and self contained with ROM and DOS built in
  • Faithful Z-80 CPU emulation (including undocumented opcodes — passes all ZEXALL opcode tests)
  • Runs at standard 2.03MHz (or run up to 100MHz on a modern PC)
  • Bundled disk and tape library includes applications, utilities, operating systems, and games
  • Supports up to four virtual floppy drives, and all major virtual floppy formats (DMK, JV3, JV1)
  • Tape drive emulation supports high and low speed reading and writing (CAS format)
  • Windowed and full-screen modes
  • Built-in Z-80 assembler and disassembler
  • Real-time monitor of Z-80 registers and state, and floppy controller status
  • Printer to file support
  • Support for all video modes, including wide characters and Kanji mode
  • Bundled disk and tape library includes applications, utilities, operating systems, and games

SDLTRS (2019) Model I/III/4 Emulator

General Information:

Author:
Jens Guenther forking from Mark Grebe
Version:
1.2.3
Last Updated:
October 15, 2019

Jens Guenther made bug fixes to SDLTRS v1.1.0

Features:

  • Included all patches by Alan Cox: support for banked memory, Lowe LE18
  • Fixed various SegFaults: ROM Selection Menu, Scaling in Fullscreen
  • Reworked the Interface: new shortcuts and key bindings, help screen
  • Ctrl-A, Ctrl-C & Ctrl-V can now be used in the Emulator (CP/M & WordStar)
  • Access to real floppy disks works now on Linux
  • Tried to fix reported bugs to the original version
  • Port to SDL2
  • Support for Exatron Stringy Floppy …

SDLTRS (2010) Model I/III/4 Emulator

General Information:

Author:
Mark Grebe
Download:
Windows or MAC OSX or LINUX Version.
Version:
1.1.0
Last Updated:
February 15, 2010

SDLTRS builds on XTRS and adds Windows and Mac OS X support, Fullscreen display, Text based GUI on Windows and Linux, and in Fullscreen mode on the Macintosh, Configuration files, Disk LED Indicators on screen, Creation of Disk images inside of the program, Saving and loading of disk sets, Saving and loading of emulator state, Copy and Paste of text to/from host and emulator, and USB Joystick support.


TRSEMU v1.4 Model III Emulator for Javascript

General Information:

Author:
Peter Phillips
Download:

Emulates a TRS-80 Model III using only Javascript.


Level I Simulator for the Web (Java)

General Information:


Emulates a Level I TRS-80 Model on the Web (Java).


Much Older Emulators

Use at your own risk. May not be able to handle DMK images, Windows XP or later.

OS
Emulated
Name
Rel Date
Author
Home Site

OS
Emulated
Name
Rel Date
Author
Home Site

This emulator can map your PC drive as a real TRS-80 boot drive and can aid in transferring data from a TRS-80 Disk to an IBM!


OS
Emulated
Name
Rel Date
Author
Home Site
DOS
Model 4
May 5, 2004
  • The unregistered shareware version emulates a 64K Model 4 with four double-sided, 80-track floppy drives and a parallel printer port. All Model 4 sound can be routed through either the PC speaker or a Sound Blaster compatible sound card, and several international keyboard layouts are available.
  • The registered version adds support for Model III mode, the 128K memory upgrade, a virtual hard drive, a hardware clock, RS-232 communications, high resolution graphics (Radio Shack and Micro-Labs), snapshots, a Model 4 mouse driver, and file transfer utilities.
  • In any event, the emulator will use LPTx: for the TRS-80 printer port, and COMx: for the RS-232 port.
  • I have personally used the registered version of this emulator. I put a real Model 4 disk in IBM Drive A: and set that as my emulator boot drive (:0). This emulator booted off of the physical Model 4 disk and performed flawlessly. To create a .DSK file image of that floppy all I had to do was mount my Model 4 disk as :0 (in A:), and a virtual disk as :1, and run BACKUP. That’s IT!!
  • Matthew includes a utility which will allow you to import and export from a Model III/4 .DSK file to DOS which supports wildcards.

OS
Emulated
Name
Rel Date
Author
Home Site
Amiga
Model I
Jan 1 2003

OS
Emulated
Name
Rel Date
Author
Home Site
DOS
Model I
Model I Emulator v3.02u-g Final)
Sep 7 2002

OS
Emulated
Name
Rel Date
Author
Home Site
DOS
Model I
Apr 23 2002
Anthony Wood

OS
Emulated
Name
Rel Date
Author
Home Site

OS
Emulated
Name
Rel Date
Author
Home Site
Win
Model 1/3/4
WINTRS80 2.0
Jul 21 2000
Wade Fincher

OS
Emulated
Name
Rel Date
Author
Home Site
Mac
Model 1
TRS-80 Emulator for Mac OS v1.6
Jul 11 1999

OS
Emulated
Name
Rel Date
Author
Home Site
AtariST
Model III
Jan 28 1998
Sander Berents
DOS
Model I
May 30 1997
DOS
Model I
Dec 9 1996
DOS
Model I
Oct 11 1996
Paul Robson
DOS
Model I
Oct 25 1994
George Phillips
DOS
Model I
Model I Emulator v0.1
(Source Code Only)
Aug 31 1992
Benoit Gilon

Other Computers


OS
Emulated
Name
Rel Date
Author
Home Site
Various
Dragon and Coco
XRoar v0.29
Apr 21 2013

OS
Emulated
Name
Rel Date
Author
Home Site
Windows ‘9x
MC-10
May 2008

OS
Emulated
Name
Rel Date
Author
Home Site
Windows ‘9x
Coco III
Coco III v1.42
Aug 13 2010

OS
Emulated
Name
Rel Date
Author
Home Site
Windows or OSX or Linux
Model 100
Virtual T v1.5
Jul 9 2011
Stephen James Hurd and Ken Pettit

OS
Emulated
Name
Rel Date
Author
Home Site
Windows
HT 1080/Z
HT 1080/Z / System 80 v1.6.4
July 2011
Attila Grósz

Emulator Features:

  • Full and cycle exact Z80 CPU core
  • Support for the VideoGenie-1/System-80, all 3 series of HT1080Z computers and the TRS80 Model I Level 2
  • Support for 16 and 64 kb memory setups
  • NMI interrupt (RESET)
  • Video Cut (32 columns mode) and Page buttons
  • 3 channel YM2149 sound chip emulation along with the noise and envelope generators
  • TRS-80 compatible tape sound
  • Full keyboard emulation
  • Direct loading of the disk based CMD format files
  • Read/write support for the CAS tape format
  • WAV format support for tape output
  • Simple printer support
  • Lowe LE15 High Resolution Graphic Adapter emulation

OS
Emulated
Name
Rel Date
Author
Home Site
Windows
HT 1080/Z
FastZ80 v1.02
Jul 18 2008
Kintli Lajos

Emulator Features:

  • Very fast and accurate Z80 engine
  • Z80 undocumented instructions/flag bits are implemented
  • RESET and NMI support
  • Four running speeds including ‘full’ for maximum performance
  • 64*16 character video display (including 128*48 pixel graphics)
  • Video cut / page with optional 200% magnifier
  • 8*8 memory mapped ‘wired or’ keyboard matrix
  • TRS-80 like ‘tape output’ sound is supported
  • General Instruments AY-3-8910 (Yamaha YM2149) sound chip is emulated
  • Tape emulation through CAS files for basic language and system programs
  • Direct load of TRS80 CMD & CAS & Intel Hex files
  • ROM extension is included (use SYSTEM and /12288 for activating)
  • ROM includes simple monitor (use SYSTEM and /12710)
  • Content of ROM can be loaded from binary file
  • Character generator ROM can be loaded from bitmap file
  • Keyboard mapping can be loaded from a text file
  • Default settings including ROMs can be patched into the EXE file
  • Built in port controlled timer/event counter
  • Small sized single EXE program, no external files are needed
  • Running on standard WIN32 environment (Windows 95 and up)

OS
Emulated
Name
Rel Date
Author
Home Site
Windows
HT 1080/Z
Mar 8 2008

Emulator Features:

  • 1.774 MHz CPU clock, precise Z80 cycles times, all Z80 op codes including the non defined ones and XF/YF flags.
  • Z80 Reset, NMI, INT lines.
  • All three HT-1080Z series ROMs and character generators included with selectable 16/48K memory.
  • Full HT keyboard with CUT and PAGE keys, Pause mode.
  • Tape recorder, printer, four 5 1/4″ SS SD floppy disk, internal clock
  • Yamaha YM2149 sound chip (originally supported only in HT series)
  • Micolor 01 (Hungarian expansion board) and Lowe Electronics LE18 graphic board.
  • Built-in debugger
  • Audio: 8 bits, Mono, 22050Hz
  • Screen snapshot into BMP or JPEG file.
  • Turbo mode, 2x or Full (20x).
  • Program autostart, text file input as keyboard
  • Predefined and custom “skins”
  • Favorites
  • Memory snapshot to CAS file
  • Emulates Micolor 01, 256×256 color expansion board.
  • Emulates Lowe Electronics LE18, 384×192 B/W expansion board.

OS
Emulated
Name
Rel Date
Author
Home Site
Windows
HT 1080/Z
Sep 30 2005

OS
Emulated
Name
Rel Date
Author
Home Site
Windows ‘9x
CoCo III
CoCo III Emulator v1.6B
Nov 6 2001

OS
Emulated
Name
Rel Date
Author
Home Site
DOS
CoCo II
CoCo II Emulator v1.6
Jan 15 2001

OS
Emulated
Name
Rel Date
Author
Home Site
DOS
Model 1000
Tand-Em v0.55
Mar 18 1999
DOS
CoCo
Nov 22 1997
Amiga
CoCo
DREaM v1.02
Jul 16 1997
DOS
CoCo
Jun 8 1997
Paul Burgin
DOS
Model 100
Sep 1988

2 Comments

  1. I had a TRS-80 Color computer 2. The TRS-80 models 3 and 4 with the built-in monitor would not do color or pixel graphics – SET instead of PSET – If you can get ahold of QBASIC, it will use most of the commands from the TRS-80.
    -Coffee Monster

    Reply
  2. I’m now running Windows 7 64-bit. Are there any emulator’s for the TRS-80 Color Computer I that will work on that?
    -Thanks

    Reply

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