97 lines
3.7 KiB
Markdown
97 lines
3.7 KiB
Markdown
---
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keywords: ["DOS-15", "PDP-15", SIMH, 1970s, 1970]
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image: ./dos-15-SIMH-5.webp
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description: 'We can run ! DOS-15 on the SIMH PDP-15 emulator. First, we need to download the ! DOS-15 kit. You can download the kit needed to run ! DOS-15 on the SIMH PDP-15 emulator from the "SIMH Legacy" website.'
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sidebar_position: 1
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sidebar_label: "! DOS-15 on SIMH"
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---
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# How to install ! DOS-15 on SIMH?
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We can run [! DOS-15](/1970s/1970/dos-15) on the SIMH PDP-15 emulator. First, we need to download the ! DOS-15 kit.
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## Downloads
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You can download the kit needed to run ! DOS-15 on the SIMH PDP-15 emulator from the ["SIMH Legacy"](http://simh.trailing-edge.com/) website:
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- [! DOS-15 kit](http://simh.trailing-edge.com/kits/dos15.zip)
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## Using ! DOS-15
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:::tip
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If you have not already installed SIMH PDP-15 emulator, see [the VirtualHub Setup tutorial on how to do so](https://setup.virtualhub.eu.org/simh-pdp15/) on Linux and Windows.
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:::
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Extract the kit you downloaded. Inside you will find several files. Create a folder somewhere to store the files for this VM and move those two files named `dosv2a_4p.rf` and `rfsboot.rim` into it.
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Now we will create a config file for our VM. Create a text file called `pdp15.ini` with the following content in the VM folder:
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```ini
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at -e rf dosv2a_4p.rf
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load rfsboot.rim 77637
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run
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```
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Now open a terminal and move to the VM folder. Run the following command to start the emulator:
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```bash
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pdp15
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```
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When asked for a date, enter it in `MM/DD/YY` format. You _cannot_ use backspace to erase characters, even if it looks like you can. Try entering a date before the year 2000, to avoid problems related to [Y2K](https://en.wikipedia.org/wiki/Year_2000_problem).
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Now that DOS-15 is ready, let's run some commands on it. Type `D` and press enter to see the system's date:
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You can run `I` to see a list of commands you can run:
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That's it! We used ! DOS-15. We can create a shell script to make it easy to launch the VM. Create a file called `dos-15.sh` with the following content:
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```bash
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#!/bin/bash
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pdp15
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```
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Now make the file executable:
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```bash
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chmod +x dos-15.sh
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```
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Now you can start the VM using the shell script. For example, on KDE you can right-click the file and choose `Run in Konsole` or on GNOME, where you can right-click the file and choose `Run as executable`. The VM will start.
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See the [manuals section](/1970s/1970/dos-15/#manuals) on the [main ! DOS-15 page](/1970s/1970/dos-15) to learn how to use it.
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### Windows
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:::tip
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You should use Linux. If you don’t know how to install a Linux distro, see [our tutorials on how to install Kubuntu](https://setup.virtualhub.eu.org/tag/os/), a beginner-friendly distro.
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:::
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On Windows, you need to place the `PDP15.exe` file you downloaded in [this tutorial](https://setup.virtualhub.eu.org/simh-pdp15#windows) in the VM folder. Then you can follow the above tutorial as usual. The shell script will not work on Windows. You need to rename it to `dos-15.bat`. Then you can double-click the file to launch the VM, no need to make it executable.
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## Credits
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- The disk image and other files used above are from a kit available on [SimH “Classic” website](http://simh.trailing-edge.com/).
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## Video tutorial
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Do you want to follow the tutorial by watching a video? We will post a video on our [YouTube channel](https://www.youtube.com/@virtua1hub) soon.
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Archives of this tutorial are available on [Wayback Machine](https://web.archive.org/web/*/https://virtualhub.eu.org/1970s/1970/dos-15/simh/).
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