| General information | |
|---|---|
| Launched | 1988 |
| Common manufacturer(s) | |
| Performance | |
| Max. CPU clock rate | 8 MHz |
| Data width | 8 and 16 |
| Address width | 20 |
The RTX2010, manufactured by Intersil, is a radiation hardened stack machine microprocessor which has been used in numerous spacecraft.
It is a two-stack machine, each stack 256 words deep, that supports direct execution of Forth. Subroutine calls and returns only take one processor cycle and it also has a very low and consistent interrupt latency of only four processor cycles, which lends it well to realtime applications.
In 1983, Chuck Moore implemented a processor for his programming language Forth as a gate array. As Forth can be considered a dual stack virtual machine, he made the processor, Novix N4000 (later renamed NC4016), as a dual-stack machine. In 1988, an improved processor was sold to Harris Semiconductor, who marketed it for space applications as the RTX2000.[1]