uTracer11

„uTracer11“ (read: "micro-program-tracer for PDP-11") is a signal probe that is plugged into older UNIBUS PDP-11s.

The CPU state is visualized on a host PC via a graphical user interface (GUI)

It is primarily used for micro-stepping the CPU, as a function demo, repair tool, or for entertainment.

See: https://www.retrocmp.com/tools/utracer11

Directory structure:

• common - C++ sources needed for M93X2 Arduino and GUI ... message protocol

• CSerialPort - C++ sources for RS232 interface Linux/Windows

• duktape - embedded JScript engine

• gui - main user interface, WxWidgets project Linux/Windows

• KM11.pcb - KiCad project for KM11 adapter probe

• M93X2probe.pcb - KiCad project for M93X2 probe PCB

• M93X2probe.pio - M93X2 probe Arduino firmware, PlatformI

• M93X2probe.pdp11data - PDP-11 code to be embedded into M93X2 BOOT logic

• Pdp11BusCycleDisas - source branch of UNIBUS traffic disassmebler for different PDP-11 CPUs

• pdp1134sim - case study for a micro machine based simulator, example is a 11/34 simple program loop

• resources - helper data files, scanned jpegs