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113 lines
4.1 KiB
Markdown
113 lines
4.1 KiB
Markdown
---
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keywords: ["PDP7", "Unix", "PDP-7", SIMH, 1970s, 1970]
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image: ./pdp7unix-SIMH-4.webp
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description: "We can run ! PDP7 Unix on the SIMH PDP-7 emulator. First, we need to download the ! PDP7 Unix kit. You can download the kit needed to run it on the SIMH PDP-7 emulator from our GitHub repo."
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sidebar_position: 1
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sidebar_label: "! PDP7 Unix on SIMH"
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---
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# How to install ! PDP7 Unix on SIMH?
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We can run [! PDP7 Unix](/1970s/1970/pdp7unix) on the SIMH PDP-7 emulator. First, we need to download the ! PDP7 Unix kit.
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## Downloads
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You can download the kit needed to run ! PDP7 Unix on the SIMH PDP-7 emulator from [our GitHub repo fork](https://github.com/InstallerLegacy/pdp7-unix) of the original [project to resurrect Unix on the PDP-7 from a scan of the original assembly code](https://github.com/DoctorWkt/pdp7-unix):
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- [! PDP7 Unix kit](https://github.com/InstallerLegacy/pdp7-unix/releases/latest/download/pdp7.zip)
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If you want to build the kit yourself, refer to [our guide on how to do so](/blog/building-pdp7-unix-images-yourself/).
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## Using ! PDP7 Unix
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:::tip
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If you have not already installed SIMH PDP-7 emulator, see [the VirtualHub Setup tutorial on how to do so](https://setup.virtualhub.eu.org/simh-pdp7/) on Linux and Windows.
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:::
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Extract the kit you downloaded. Inside you will find two files. Create a folder somewhere to store the files for this VM and move those two files named `boot.rim` and `image.fs` into it.
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Now we will create a config file for our VM. Create a text file called `pdp7.ini` with the following content in the VM folder:
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```ini
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set cpu 8k
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set cpu eae
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set cpu history=100
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show cpu
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set tti unix
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set rb ena
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att rb image.fs
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set g2in ena
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att -U g2in 12345
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set lpt disa
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set drm disa
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set dt disa
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show dev
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load boot.rim 010000
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go
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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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pdp7
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```
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After the emulator starts, login using the ID `ken` and password `ken`. You will see the following screen:
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:::tip
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There are other user accounts on the image like `dmr` (password: `dmr`). Do you know who `dmr` and `ken` were? Check the first comment to find out, or search it on the web!
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:::
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Type `ls` followed by enter. It will list all the files available on the disk.
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That's it! We used ! PDP7 Unix. We can create a shell script to make it easy to launch the VM. Create a file called `pdp7unix.sh` with the following content:
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```bash
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#!/bin/bash
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pdp7
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```
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Now make the file executable:
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```bash
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chmod +x pdp7unix.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/pdp7unix/#manuals) on the [main ! PDP7 Unix page](/1970s/1970/pdp7unix) 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 `PDP7.exe` file you downloaded in [this tutorial](https://setup.virtualhub.eu.org/simh-pdp7#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 `pdp7unix.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 built from the [project to resurrect Unix on the PDP-7 from a scan of the original assembly code](https://github.com/DoctorWkt/pdp7-unix).
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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/pdp7unix/simh/).
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