The Fortran 90 Handbook is a definitive and comprehensive guide to Fortran 90
and its use. Fortran 90, the latest standard version of Fortran, has many
excellent new features that will assist the programmer in writing efficient,
portable, and maintainable programs. The Fortran 90 Handbook is an informal
description of Fortran 90, developed to provide not only a readable
explanation of features, but also some rationale for the inclusion of features
and their use. In addition, “models” give the reader better insight as to why
things are done as they are in the language.
The Fortran 90 Handbook is a definitive and comprehensive guide to Fortran 90
and its use. Fortran 90, the latest standard version of Fortran, has many
excellent new features that will assist the programmer in writing efficient,
portable, and maintainable programs. The Fortran 90 Handbook is an informal
description of Fortran 90, developed to provide not only a readable
explanation of features, but also some rationale for the inclusion of features
and their use. In addition, “models” give the reader better insight as to why
things are done as they are in the language.
關(guān)于FPGA流水線設(shè)計(jì)的論文
This work investigates the use of very deep pipelines for
implementing circuits in FPGAs, where each pipeline
stage is limited to a single FPGA logic element (LE). The
architecture and VHDL design of a parameterized integer
array multiplier is presented and also an IEEE 754
compliant 32-bit floating-point multiplier. We show how to
write VHDL cells that implement such approach, and how
the array multiplier architecture was adapted. Synthesis
and simulation were performed for Altera Apex20KE
devices, although the VHDL code should be portable to
other devices. For this family, a 16 bit integer multiplier
achieves a frequency of 266MHz, while the floating point
unit reaches 235MHz, performing 235 MFLOPS in an
FPGA. Additional cells are inserted to synchronize data,
what imposes significant area penalties. This and other
considerations to apply the technique in real designs are
also addressed.
PCI Hot-Plug Specification Revision 1.0
The primary objective of this specification is to enable higher availability of file and application servers by standardizing key aspects of the process of removing and installing PCI adapter cards while the system is running. Although these same principles can be applied to desktop and portable systems using PCI buses, the operations described here target server platforms.
This article describes Atmel’s FingerChip technology for electronic fingerprint sensing that
combines the advantages of small size, low cost, high accuracy, zero maintenance, low energy
consumption and portability. This technology has applications in a wide range of fixed and
portable secured devices including access control systems, cash terminals, public transport, PCs,
PDAs, Smart Card readers and motor vehicles. It can be used in almost any situation where
rapid, reliable and accurate identification or authentication of an individual is required.
Basic Compression Library
by Marcus Geelnard
Release 1.2.0
2006-07-22
Introduction
The Basic Compression Library is a library of well known compression algorithms implemented in portable ANSI C code.
For more information about the Basic Compression Library, please read the manual (doc/manual.pdf) and, of course, the source code.
UCOS/II for ICCAVR
- The version of UCOS/II is 2.04
- the original port was done by Ole Saether for the IAR compiler. Jens E.
Holtegaard ported one version using ICCAVR. Joerg Meyer did another port
(using Jens port as a start?). This is basically Joerg s port plus a
little bit of changes and documentation by me.
- YOU MUST DOWNLOAD THE MAIN PART OF THE UCOS/II FROM THE UCOS/II WEBSITE
http://www.ucos-ii.com . The supplied project file assumes the portable
source is in the ..\source directory.
- Joerg has written couple document showing the stack frames etc. but it
is in German :-) They are included in this directory.
- The Timer2 overflow interrupt is used for Timer Tick. If you want to
change that, modify os_cpu_c.c and os_cpu_a.s
- I have tested this using ATMega103 with and without external RAM
using AVR Studio simulator. See test1.c test program. Both Code
Compressed (PRO) and STD versions have been tested.
This book shows how to design and implement C++ software that is more effective: more likely to behave correctly more robust in the face of exceptions more efficient more portable makes better use of language features adapts to change more gracefully works better in a mixed-language environment is easier to use correctly is harder to use incorrectly. In short, software that s just better.
