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Data General DASHER-compatible terminal emulator rewritten in Go

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DasherG

UPDATE: February 2022 - It is becoming difficult to build DasherA from scratch as the GUI toolkit used has not been updated in a long time :-( Development of this version of the Dasher emulator had been suspended and I recommend you take a look at DasherA.

DasherG is a free terminal emulator for Data General DASHER series character-based terminals. It is written in Go using the Go-Gtk toolkit and should run on all common platforms supported by Go.

screenshot

Key Features

  • Serial interface support at 300, 1200, 2400, 4800, 9600 & 19200 baud, 7 or 8 data bits (defaults to 9600, 8, n, 1)
  • BREAK key support for serial interface - permits use as master console
  • Network Interface (Telnet) support
  • DASHER D200 & D210 Emulation
  • 15 (plus Ctrl & Shift) DASHER Function keys, Erase Page, Erase EOL, Hold, Local Print and Break keys
  • Reverse video, blinking, dim and underlined characters
  • Various terminal widths, heights and zoom-levels available
  • Pixel-for-pixel copy of D410 character set
  • Session logging to file
  • Loadable function key templates (BROWSE, SED and SMI provided as examples)
  • 1000-line terminal history
  • May specify -host=host:port on command line
  • Support for mini-Expect scripts to automate some tasks see Wiki
  • Copy and Paste - select region with mouse (it is automatically copied to clipboard) and paste at cursor via Edit menu
  • XMODEM-CRC file transfer with short (128) or long (1024) packets

Download

DasherG is hosted on GitHub.

Build from Source

Prerequisites

To build from the source you will need the GTK-Development packages installed on your system. You will also need to install the following Go packages...

go get github.com/mattn/go-gtk/gtk

and

go get github.com/distributed/sers

Build

go build

or, if you prefer

go install

Running DasherG

From the build or install directory simply type

./DasherG

Optionally, you may add the -host=host:port argument to connect to a running host via telnet. Eg.

./DasherG -host=localhost:23

For a full list of all available DasherG options type

./DasherG -h

Function Keys

You may have to use the keys simulated on the toolbar in DasherG as your OS might interfere with the physical function keys on your keyboard. The Shift and Control keys can be used in conjunction with the simulated F-keys just like a real Dasher.

The "Brk" button sends a Command-Break signal to the host when connected via the serial interface.

"Hold" and "Local Print" work as you would expect, although the print actually goes to a user-specified image (PNG) file.

Bell Sound

For the system bell to operate, DasherG must have been started from a terminal which supports the bell.

Copy and Paste

To copy text from the terminal simply swipe over it with the left mouse button pressed. The selected text will be temporarilly underlined and when you release the mouse button it will be automatically copied to the system clipboard.

Pasting always occurs at the current cursor position and is triggered from the Edit | Paste menu.

Emulation Details

See here