Minimal instruction set, small, low power 16-bit CPU optimized to run Forth on a Xilinx FPGA. When system is stable, VHDL source code for CPU and all other code will be released to make a full open source public domain CPU.

Uses of Forth microprocessors and programming language: controllers for spacecraft flight systems, on-board payload experiments, ground support; hardware or software to build or test flight or ground systems.

Designs, builds: single board computers (SBC), peripherals, embedded systems, PCB design/layout, high level programming (industry leaders in Forth), custom design work; large line of stock products: from full handheld computers to development packages...

Makes IGNITE I ROSC (Removed Operand Set Computer), PSC1000 32-bit embedded shBoom-based microprocessor line, many ISDN interface products, sophisticated antenna/radar technologies.

Course on minimal processors: Guided Exploration of two FPGA-based CPU Designs, led by John Rible.

Philip J. Koopman, Jr., CMU page. Reports, studies, and links. Compares: CISC, RISC, Stack systems; 2 and 3 stack systems.

By Philip J. Koopman, Jr; Ellis Horwood, 1989, ISBN 0470214678. Read on-line, or download in formats: HTML, PDF, zip file. First book to explore a new breed of stack computers led by introduction of Novix NC4016. [Free]

Explains extreme, simple RISC, with only one instruction, move memory to memory; yet it is useful. Revision of paper first published in ACM Computer Architecture News.

Embedded systems consultant for small (8/16-bit) and distributed microprocessor systems. Contract hardware and software development for most microcontrollers. Specialist: Forth, Assembly, C. By Bradford J. Rodriguez, Ph.D.

Small, powerful Forth embedded computers: let you quickly design applications: controls, portable instruments, terminals, data loggers, GPS, CAN bus, multitasking, LCD and keyboard systems. High level language makes development simple and fast; needs ...