Xxdp: From the bitsavers

From the bitsavers.org collection, a scanned-in computer-related document.dec :: pdp11 :: xxdp :: PDP11 DiagnosticHandbook 1988 XXDP is a minimal disk operating system from DEC for the PDP-11 that was used to host their diagnostic programs. See how Ian Hammond reverse-assembled the XXDP sources and documents on GitHub and converted it to use RT-11's file system. uv7swre.zip 3.06 Mb UNIX V7 with source code (RL02) venix2rd.zip 1.66 Mb VENIX/PRO Rev. 2.0 (disk image for Xhomer) demos30.zip 2.15 Mb DEMOS 3.0 for DVK (diskette image MY) XXDP File Size Description xxdp22.zip 3.17 Mb XXDP 2.2 (loadable image RL02) xxdp25.zip 3.61 Mb XXDP 2.5 (loadable image RL02) PDP-11 emulators and utilities File Size ... This directory contains bootable XXDPv25 TU58 DECtapeII image files of PDP-11 diagnostics. For each image file (eg, 1134_1.DSK) there is a plain text listing (1134_1.TXT) of the directory of the image.