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Directory Sites
References, links to Forth and stack machines in various technologies.
www.ultratechnology.com
Minimal Instruction Set Computers
Stack-based processors, 5-bit words, 25 instructions, 7000 transistors, 80 MIPS, 50 milliwatts, low cost; designed by Chuck Moore, creator of Forth programming language.
www.ultratechnology.com
Course on minimal processors: Guided Exploration of two FPGA-based CPU Designs, led by John Rible.
www.sandpipers.com
JOP is the implementation of a small java processor with the JVM fitting in a FPGA.
www.jopdesign.com
PTSC: Patriot Scientific Corp.
Makes IGNITE I ROSC (Removed Operand Set Computer), PSC1000 32-bit embedded shBoom-based microprocessor line, many ISDN interface products, sophisticated antenna/radar technologies.
www.ptsc.com
NASA: Space Related Applications of Forth
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.
forth.gsfc.nasa.gov
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. Since 1980.
www.newmicros.com
Goal: dominate very low cost, low power, single core CPU market, and have the only ultra-high-end supercomputer on-a-chip system. Because the CPU core is so small, it is possible to put 1000s of cores and memory in one IC chip package.
www.enumera.com
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.
www.zetetics.com
Triangle Digital Services Ltd.
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 no PROM programmer. Forth hardware and software.
www.triangledigital.com
Philip J. Koopman, Jr., CMU page. Many reports, studies, links. Compares: CISC, RISC, Stack systems; 2 & 3 stack systems. Excellent resource.
www.ece.cmu.edu
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]
www.ece.cmu.edu
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.
www.cs.uiowa.edu
Research project for high performance, low cost computing. Uses stack-based instructions for a 4-way VLIW processor. Implemented in current technology, it would outrun high-end DSPs (TMS 320C6x, TigerSHARC), and let the full program run on one processor, with no further RISC core.
www.jwdt.com
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.
www.cse.cuhk.edu.hk