initial commit

docker/Dockerfile

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+FROM debian:11-slim AS builder
+RUN apt-get -y update && apt-get -y upgrade && apt-get -y install gcc libpcap-dev libvdeplug-dev libpcre3-dev libedit-dev libsdl2-dev libpng-dev libsdl2-ttf-dev build-essential && apt-get clean
+ADD simh-3.9-0.tgz /
+WORKDIR /simh-3.9-0
+RUN make pdp11
+
+FROM debian:11-slim
+ENV DISK_FILENAME=rq0.dsk
+RUN apt-get -y update && apt-get -y upgrade && apt-get -y install ed libpcap-dev iproute2 iptables gcc vdeplug libpcre3 net-tools telnet
+COPY --from=builder /simh-3.9-0/BIN/pdp11 /usr/local/bin/pdp11
+COPY boot.ini.template /
+COPY startup.sh /
+CMD /startup.sh

docker/boot.ini.template

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+; model a PDP-11/70 with maximum memory, fpu, no CIS
+set cpu 11/70 4096K fpp
+
+; disable all extra devices by default, will enable later
+detach all
+reset all
+
+; use 7b ascii terminal
+set tto 7b
+
+; set the boot disk as an MSCP UDA50
+set rq enabled
+set rq0 rauser=1000
+attach rq0 /mnt/<DISK_FILENAME>
+show rq0
+
+; set one DZ11 8 line async mux
+; accessible via telnet to port 4000
+set dz enabled
+set dz lines=8
+set dz 7b
+attach -am dz 4000
+show dz
+
+; set one DELUA/DEUNA unibus enet controller
+; ==> must setup ethX per your system config
+set xu enabled
+set xu type=delua
+attach xu tap:pdp
+show xu
+
+; show our config
+show devices
+show cpu iospace
+
+; Configure all csr/vector
+set cpu autoconfig
+; Change DZ vector
+set dz vector=310
+; boot it
+boot rq0
+<EXIT>

docker/build.sh

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+#!/bin/sh
+
+usage () {
+	echo "usage: $0 tag"
+	exit 1
+}
+
+[ -n "$1" ] && tag="$1" || usage
+
+file="simh-3.9-0.tgz"
+url="https://codeload.github.com/simh/simh/tar.gz/refs/tags/v3.9-0"
+
+cd "$(dirname $0)"
+
+[ -f "$file" ] || wget "$url" -O "$file"
+
+docker build -t "$tag" .

docker/startup.sh

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+#!/bin/sh
+set -ex
+
+[ -n "$DISK_FILENAME" ] || DISK_FILENAME="rq0.dsk"
+[ -f "/mnt/$DISK_FILENAME" ] || { echo "Unable to find tape /mnt/$DISK_FILENAME"; exit 1; }
+[ -w "/mnt/$DISK_FILENAME" ] || { echo "Tape /mnt/$DISK_FILENAME is not writable"; exit 1; }
+
+# Set exit command only if NOEXIT not set
+[ -z "$NOEXIT" ] && EXIT_CMD="exit" || EXIT_CMD=""
+
+sed -e "s/<DISK_FILENAME>/${DISK_FILENAME}/" \
+    -e "s/<EXIT>/${EXIT_CMD}/" /boot.ini.template > /boot.ini
+
+cidr=28
+hostip=1.3.3.1
+pdpip=1.3.3.7
+
+ip tuntap add pdp mode tap
+ip link set pdp up
+ip addr add "${hostip}/${cidr}" dev pdp
+iptables -t nat -A PREROUTING ! -i pdp -p tcp --dport 4000 -j ACCEPT
+iptables -t nat -A PREROUTING ! -i pdp -j DNAT --to-destination 1.3.3.7
+iptables -t nat -A POSTROUTING ! -o pdp -j MASQUERADE
+
+pdp11 /boot.ini