Modern In-Circuit Emulator For The 6809

The Motorola 6809, released in 1978, was the follow-up to their 6800 from four years earlier. It’s a powerful little chip with many 16-bit features, although it’s an 8-bit micro at hear…

A 6502 Overlay Debugger

Retired hardware engineer [Plasmode] recently took on the challenge of building a debugger for the 6502 designed to sit atop the microprocessor while seated in a solder less breadboard. The result …

ORBTrace Effort: Open Tool For Professional Debugging

There are some fairly powerful debugging facilities available on today’s microcontrollers — if your code crashes mysteriously, chances are, there’s a debugging interface that coul…