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230 lines
8.6 KiB
Markdown
230 lines
8.6 KiB
Markdown
---
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keywords: ["DOS-11", "PDP-11", SIMH, 1970s, 1970]
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image: ./dos-11-simh-23.webp
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description: "We can run ! DOS-11 on the SIMH PDP-11 emulator. First, we need to download the ! DOS-11 tapes. You can download them from Bitsavers:"
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sidebar_position: 1
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sidebar_label: "! DOS-11 on SIMH"
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---
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# How to install ! DOS-11 on SIMH?
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We can run [! DOS-11](/1970s/1970/dos-11) on the SIMH PDP-11 emulator. First, we need to download the ! DOS-11 tapes.
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## Downloads
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You can download the tapes needed to install ! DOS-11 on the SIMH PDP-11 emulator from Bitsavers:
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- [! DOS-11 tape 1 of 3](http://bitsavers.org/bits/DEC/pdp11/dectape/BS/v920c1.dta)
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- [! DOS-11 tape 2 of 3](http://bitsavers.org/bits/DEC/pdp11/dectape/BS/v920c2.dta)
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- [! DOS-11 tape 3 of 3](http://bitsavers.org/bits/DEC/pdp11/dectape/BS/v920c3.dta)
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## Installing ! DOS-11
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:::tip
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If you have not already installed SIMH PDP-11 emulator, see [the VirtualHub Setup tutorial on how to do so](https://setup.virtualhub.eu.org/simh-pdp11/) on Linux and Windows.
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:::
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:::tip
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If you want, you can skip these installation steps, and download a pre-installed image from this website: [http://iamvirtual.ca/PDP-11/DOS-11/DOSv9-20C-RK05.DSK](http://iamvirtual.ca/PDP-11/DOS-11/DOSv9-20C-RK05.DSK). Rename the file to `rk05.dsk` and move it to the VM folder. Now you can start [using DOS-11](#using-dos-11)!
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:::
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Create a folder somewhere to store the for this VM, and move the tapes into it.
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Now we will create a config file for our VM. Create a text file called `pdp11.ini` with the following content in the VM folder:
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```ini
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set cpu 11/05
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set cpu 64K
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set hk disable
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set ptr disable
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set ptp disable
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set dz disable
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set rl disable
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set rx disable
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set rp disable
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set rq disable
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set tm disable
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set tq disable
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set rk enable
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attach rk0 rk05.dsk
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set tc enable
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attach tc0 v920c1.dta
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set tc0 locked
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attach tc1 v920c2.dta
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set tc1 locked
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attach tc2 v920c3.dta
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set tc2 locked
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attach lpt lineprinter.txt
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boot tc0
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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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pdp11
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```
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After the emulator starts, you will be asked for `CONSOLE FILL COUNT`. Type `0` and press enter. Then, you will be asked for a date. Enter the date in the `DD-MMM-YY` format. For example, enter `11-JAN-74`. To avoid various issues. Enter a date from the 1970s.
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To the `DIALOGUE?` prompt, type `Y` and press enter. When asked if you want help, type `N` and press enter. When asked `LP ONLINE ?`, enter `Y`.
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You will get a `#` prompt. Type `DK0:MONLIB.CIL/ZERO/HOOK/BOOT<DT0:MONLIB.LCL` and press enter.
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Then you will get `ANSWER WITH CARRET OR 'Y'CARRET:- IS YOUR LINE FREQUENCY 50 HERTZ?`. Type `^` and press enter. When asked if you want to disable dialogue forever, type `N` and press enter.
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The system will restart.
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You will be asked for date again. Enter the date in the same format as above. Then you will be asked for time. Enter the time in `HH:MM` format. For example, enter `09:12`. When prompted `DIALOGUE?` type `Y` and press enter. You will be asked whether you want to reset "fill count". Type `N` and press enter. When asked if any devices are down, type `N` and press enter.
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You will be asked if you want to change line printer. Press `Y` and press enter. When prompted with `LS11?` enter `Y`.
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When asked `HOW MANY COLUMNS ?`, enter `132`. Type `N` and press enter when asked `LOWER CASE?`, `Y` when asked `OVERPRINT?`, `Y` when asked `ELONGATION` and `N` when asked if you got RK02 disks.
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You will get a `$` prompt. Type `LOGIN 1,1` to log in.
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Then type `RUN DT0:PIP16` and press enter. The prompt will change to `#`.
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Type `SY:<DT0:DTBLD.BAT` and press enter. Then press `Ctrl` + `C`. The prompt will change to `.`. Type `KI` and press enter to exit `PIP`.
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The prompt will turn back to `$`. Type `BATCH SY:DTBLD.BAT` and press enter.
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When you get a `$` prompt, type `CO` and press enter to continue.
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You will get a `$` prompt, asking to type `CO` or `KI`, three times. Type `CO` the first time (RF or RK disk), `KI` the second time (RF or RK disk) and `CO` the third time (Line Printer or not) and press enter to continue.
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At last, you will be asked to type `TE`. Do so, and press enter to finish the installation.
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Now, press `Ctrl` + `e` to pause the emulation, and then enter `exit` to exit the emulator.
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That's it, we have installed DOS-11. We can now start using it. You can delete all the files other than the `rk05.dsk` disk image. We will create a fresh `pdp11.ini` file.
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## Using DOS-11
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Now we will create a fresh config file for using DOS-11. Create a text file called `pdp11.ini` with the following content in the VM folder:
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```ini
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set cpu 11/05
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set cpu 64K
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set hk disable
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set ptr disable
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set ptp disable
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set dz disable
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set rl disable
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set rx disable
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set rp disable
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set rq disable
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set tm disable
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set tq disable
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set rk enable
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attach rk0 rk05.dsk
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set tc enable
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attach lpt lineprinter.txt
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boot rk0
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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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pdp11
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```
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After the emulator starts, you will be asked for a date. Enter the date in the `DD-MMM-YY` format. For example, enter `11-JAN-74`. To avoid various issues. Enter a date from the 1970s. Then, you will be asked for time. Enter the time in `HH:MM` format. For example, enter `15:09`. Next, you will be asked if you want dialogue. Type `N` and press enter to continue.
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Type `LOGIN 1,1` and press enter to log in. The system date and time will be printed.
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Now type `RUN PIP` and press enter to start `PIP`.
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The prompt will change to `#`. Type `/DI` to see a list of files in the `1,1` account.
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To exit `PIP`, you can press `Ctrl` + `C`. After the prompt turns to `.`, type `KI` and press enter. To quit the emulation, press `Ctrl` + `e` and then enter `exit`.
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That's it! We used ! DOS-11. We can create a shell script to make it easy to launch the VM. Create a file called `dos-11.sh` with the following content:
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```bash
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#!/bin/bash
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pdp11
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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-11.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-11/#manuals) on the [main ! DOS-11 page](/1970s/1970/dos-11) 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 `PDP11.exe` file you downloaded in [this tutorial](https://setup.virtualhub.eu.org/simh-pdp11#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-11.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 DOS-11 tapes used above were taken from [Bitsavers](http://bitsavers.org).
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- This tutorial is based on the tutorial from this website: [http://iamvirtual.ca/PDP-11/DOS-11/Install.htm](http://iamvirtual.ca/PDP-11/DOS-11/Install.htm)
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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-11/simh/).
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