PDP11MONLOADER

Most PDP-11's have a serial console monitor. This is a simple line based user interface which allows to write, read and execute code.

This is important

if you need to boot device which the Boot ROM is missing. Then you have to enter the boot loader code over monitor.
if you want to run diagnostics, and have no working disk or tape devices yet.

Many many people have written auxillary programs to automate code download. Here comes my contribution: "pdp11monloader".

It is a command line program, written in C for Linux platforms. On MS-Windows it can be compiled for CYGWIN.

Main features:

serial port, baudrate and data format settable
can work with QBUS-PDP-11's (ODT monitor) and with UNIBUS machines (M9312 / M9301 console emulator).
can load code from MACRO-11 listing files, standard paper tape images and plain textfiles with octal <address> - <value> pairs in each line.
can start execution of downloaded code
can stay in primitive tty-like terminal emulator to let you immediately work with the running code.

Download here: https://github.com/j-hoppe/pdp11monloader. The "demo_files" contains some example code formats.