關于FPGA流水線設計的論文
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.
This set of simulation files performs a computational complexity performance comparison of the two methods mentioned in the paper. The source is ANSI-C compliant, hence any C-compiler can be used to compile the source code. It has been tested using Visual Studio.net C++ and TI code composer studio C compiler for the TMS320C6701. Note that the performance comparison may be different for different platforms.
PCI-to-PCI Bridge Architecture Specification Revision 1.1
This specification establishes the requirements that a PCI-to-PCI bridge must meet to be compliant to this specification and the PCI Local Bus Specification. In addition, the requirements for optional extensions are specified. This specification does not describe the implementation details of any particular requirement or optional feature of a PCI-to-PCI bridge, nor is it a goal of this specification to describe any particular PCI-to-PCI bridge implementation. However, some recommendations are provided for some implementation-specific features that can be provided by a PCI-to-PCI bridge.
The source code for this package is located in src/gov/nist/sip/proxy. The proxy
is a pure JAIN-SIP application: it does not need proprietary nist-sip
classes in addition of those defined in JAIN-SIP 1.1, you can substitute
the NIST-SIP stack by another JAIN-SIP-1.1 compliant stack and it should
interoperate.
he proxy can act as presence server and be able to process NOTIFY and
SUBSCRIBE requests. If this parameter is disabled, the proxy will simply
forward those kind of requests following the appropriate routing decision.
he source code for this package is located in src/ directory. The
JAIN-SIP-SERVICES is a JAIN-SIP application: it does not need proprietary nist-sip
classes in addition of those defined in JAIN-SIP 1.1, you can substitute
the NIST-SIP stack by another JAIN-SIP-1.1 compliant stack and it should
interoperate.
The CD ROM driver is used with Classpnp.sys to provide access to CD ROMs and DVD ROMs. It supports Plug and Play, Power Management, and AutoRun (media change notification). It is 64-bit compliant.
The Disk sample is used with Classpnp.sys as disk driver. The sample supports Plug and Play, Power Management, WMI, and failure prediction (S.M.A.R.T.), and it is 64-bit compliant.
This is the library for all storage drivers. It simplifies writing a storage driver by implementing 90 percent of the code required to support Plug and Play, Power Management, et cetera. This library is used by disk.sys, cdrom.sys and the tape class drivers.
No INF file is needed to install this library. The library is 64-bit compliant.
The Tremor Vorbis I stream and file decoder provides an embeddable, integer-only library [libvorbisidec] intended for decoding all current and future Vorbis I compliant streams. The Tremor libvorbisidec library exposes an API intended to be as similar as possible to the familiar vorbisfile library included with the open source Vorbis reference libraries distributed for free by Xiph.org.
Tremor can be used along with any ANSI compliant stdio implementation for file/stream access, or use custom stream i/o routines provided by the embedded environment. Both uses are described in detail in this documentation.
The Tremor Vorbis I stream and file decoder provides an embeddable, integer-only library [libvorbisidec] intended for decoding all current and future Vorbis I compliant streams. The Tremor libvorbisidec library exposes an API intended to be as similar as possible to the familiar vorbisfile library included with the open source Vorbis reference libraries distributed for free by Xiph.org.
ogg vorbis decoder, evc project
Tremor can be used along with any ANSI compliant stdio implementation for file/stream access, or use custom stream i/o routines provided by the embedded environment. Both uses are described in detail in this documentation.
