Xxdp: A single diagnostic can be very simple

A single diagnostic can be very simple (example: CKBKA0 tests only the MUL instruction of a 11/40), or very comprehensive (OKDDD0 tests the whole 11/53 CPU board with processor, RAM, serial lines units, clock and bus arbitration). The "XXDP" distribution allows to generate media packages for differnet platforms. 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. From the bitsavers.org collection, a scanned-in computer-related document.dec :: pdp11 :: xxdp :: PDP11 DiagnosticHandbook 1988 The structure that XXDP uses for storing files on media is unique to XXDP. The structure was originally based on DOS-11 but it has since been modified to accommodate the needs of XXDP, although many similarities still exist.