Jos Dreessen received a disk set of the Edision system from Günter Dotzel of Modulaware.
And he made images of it.
This diskset contains the whole Edison system, binaries and sources of all programs.
Even the sources not published in the book Programming a Personal Computer by per Brinch hansen
like the Alva PDP-11 ‘assembler’.
The program edisonFiledump is written to extract the files from the disk images.
Therefore the structure of the disk was studied, most of it was somehow documented in the book.
Run the Edison system in simh PDP-11 emulator
In the Edison archive you find a folder called simh.
In it is the PDP-11 simh windows precompiled executable and a simh config file called config.simh.
You can also compile simh yourself on other systems.
The config file contains the bootloader, Peter de Wachter constructed this.
With this and the disk images dumped you can run the Edison system.
>simh config.sys
PDP-11 simulator Open SIMH V4.1-0 Current git commit id: 6e9324e0+uncommitted-changes
#
# Load two disk images using the commands:
#
# attach ry0 disk1.dsk
# attach ry1 disk2.dsk
#
# and boot using:
#
# go 0
#
%SIM-INFO: RY0: buffering file in memory
sim> att ry0 rx02_kernel.bin
%SIM-INFO: RY0: buffering file in memory
sim> att ry1 rx02_system.bin
%SIM-INFO: RY1: buffering file in memory
sim> go 0
The Edison system
insert two disks and type
s if both disks are standard
0 if only disk 0 is standard
1 if only disk 1 is standard
b if both disks are blank
s
Command =
