The ability to write efficient, high-speed arithmetic routines ultimately depends upon your knowledge of the elements of arithmetic as they exist on a computer. That conclusion and this book are the result of a long and frustrating search for information on writing arithmetic routines for real-time embedded systems. With instruction cycle times coming down and clock rates going up, it would seem that speed is not a problem in writing fast routines. In addition, math coprocessors are becoming more popular and less expensive than ever before and are readily available. These factors make arithmetic easier and faster to use and implement. However, for many of you the systems that you are working on do not include the latest chips or the faster processors. Some of the most widely used microcontrollers used today are not Digital Signal Processors (DSP), but simple eight-bit controllers such as the Intel 8051 or 8048 microprocessors.
標(biāo)簽： arithmetic high-speed ultimately efficient
上傳時(shí)間： 2014-11-30
上傳用戶：lizhen9880
This leon3 design is tailored to the Altera NiosII Startix2 Development board, with 16-bit DDR SDRAM and 2 Mbyte of SSRAM. As of this time, the DDR interface only works up to 120 MHz. At 130, DDR data can be read but not written. NOTE: the test bench cannot be simulated with DDR enabled because the Altera pads do not have the correct delay models. * How to program the flash prom with a FPGA programming file 1. Create a hex file of the programming file with Quartus. 2. Convert it to srecord and adjust the load address: objcopy --adjust-vma=0x800000 output_file.hexout -O srec fpga.srec 3. Program the flash memory using grmon: flash erase 0x800000 0xb00000 flash load fpga.srec
標(biāo)簽： Development Startix2 tailored Altera
上傳時(shí)間： 2014-01-19
上傳用戶：chongcongying
Spartan 3 Digilent Demo:This demo drives the perphrials on the Spartan 3 board. This drives a simple pattern to the VGA port, connects the switches to the LEDs, buttons to each anode of the seven segment decoder. The seven segment decoder has a simple counter running on it, and when SW0 is in the up position the seven segment decoder will display scan codes from the PS2 port. This demo how ever does not drive the RS-232 port or the memory. This is a simple design done entirely VHDL not microblaze.
標(biāo)簽： Spartan drives This perphrials
上傳時(shí)間： 2014-05-29
上傳用戶：SimonQQ
Make and answer phone calls Detect tone and pulse digit from the phone line Capture Caller ID Support blind transfer, single-step transfer/conference, consultation transfer/conference, hold, unhold. Control of the local phone handset, microphone and speaker of the modem Send and receive faxes Play and record on the phone line or sound card Play music in background mode Silence detection VU Meter Wave sound editor that allows your end-users to edit their own sound files. Voice recognition and voice synthesis. Full control over the serial port device ZModem file transfer utility File compression and encryption utility
標(biāo)簽： phone and Capture Detect
上傳時(shí)間： 2013-11-30
上傳用戶：水中浮云
This a simple bootloader for AT91SAM7{S,X}{64,128,256} processors. It permits you to download new code to the device over USB. This bootrom is installed at address 0x00000000 in the ARM, which means that it is the first piece of code to execute after reset. At startup, it waits for a few seconds to see if the downloader is trying to connect. If not, then the bootloader gives up control and jumps to your program. If the downloader is trying to connect, then the bootloader receives the new program over USB and writes it into flash.
標(biāo)簽： bootloader processors download permits
上傳時(shí)間： 2015-11-30
上傳用戶：shus521
IO 驅(qū)動(dòng) LCD , *** *** *** *** *** *** *** *** FILE NAME: IO_LCD MCU: HT46R22 MASK OPTION: WAKE-UP: PA6,PA7 PULL-HIGH: PA,PB,PC IIC: DISABLE PFD: DISABLE PWM: DISABLE WDT: ENABLE CLRWDT: ONE WDT CLOCK SOURCE: T1 WDT TIME OUT SELECT: WDT CLOCK SOURCE/32768 LVR: DISABLE OSC: CRYSTAL SYSVOLT: 3.0V SYSFRAG: 4000KHZ AUTHOR: RADOME HISTORY: 2005.08.
標(biāo)簽： IO_LCD OPTION WAKE-U FILE
上傳時(shí)間： 2014-12-21
上傳用戶：watch100
后PC時(shí)代是嵌入式和網(wǎng)絡(luò)化的時(shí)代，包括掌上電腦在內(nèi)的PDA產(chǎn)品是后PC時(shí)代最重要的產(chǎn)品之一。在PDA市場激烈競爭的今天，Palm這個(gè)PDA界的龍頭老大，將被國內(nèi)越來越多的人所接受，有關(guān)Palm OS 的研究、開發(fā)和應(yīng)用工作也將隨之推廣。Palm OS programming from the ground up作為一本Palm開發(fā)的入門書籍較為全面的向讀者介紹了使用Code Warrior開發(fā)工具開發(fā)一個(gè)完整Palm OS應(yīng)用程序的全過程。 本書面向各個(gè)層次的C程序員讀者和PDA愛好者。對(duì)于初學(xué)者來說，這是一本很好的入門教程，對(duì)于有經(jīng)驗(yàn)的程序員來說，這是專業(yè)的參考書，對(duì)于PDA愛好者來說，這又是一本方便的手冊(cè)。通過本書的學(xué)習(xí)，不僅可以快速學(xué)會(huì)開發(fā)基本的Palm OS應(yīng)用程序，還可以學(xué)到調(diào)試程序、使用數(shù)據(jù)庫，優(yōu)化用戶界面等高級(jí)PDA開發(fā)技術(shù)。 需要說明的是由于書中出現(xiàn)的一些新的專業(yè)詞匯，國內(nèi)尚無統(tǒng)一標(biāo)準(zhǔn)譯法，只好按實(shí)際含義譯出。由于譯者水平有限，錯(cuò)誤和不妥之處敬請(qǐng)廣大讀者指正。 本書由傅曦、張昌利和瞿芹翻譯，書中所有例子在Palm IIIc 和 POSE 模擬器上調(diào)試通過。如有疑問可聯(lián)系：fxqq@sina.com 衷心期望通過本書的學(xué)習(xí)你能成為Palm OS高級(jí)開發(fā)人員中的一員。
標(biāo)簽： 后PC時(shí)代 嵌入式 網(wǎng)絡(luò)
上傳時(shí)間： 2013-12-21
上傳用戶：zhanditian
this a pack include source code for quartus 2. It is an implementation of the LC2. The LC-2 computer is described in Introduction to Computing Systems from Bits & Gates to C & Beyond by Yale Patt and Sanjay Patel, McGraw Hill, 2001. The LC2 model can be run as a simulation or downloaded to the UP3 in a larger model, TOP_LC2 that adds video output. Push buttons reset and single step the processor and a video output display of registers is generated. This state machine VHDL-based model of the LC-2 includes all source files. Currently compiled for a Cyclone EP1C6Q240 FPGA.
標(biāo)簽： implementation include quartus source
上傳時(shí)間： 2013-12-25
上傳用戶：壞壞的華仔
This package consists of the executable (UCW), a default script file, this file, and the library files. It is important that the header files end up in a include subdirectory of the directory where UCW is found. If you unzip this file using its path information ( use folder names ) this will automatically happen. You can optionally specify the UnderC directory with the environment variable UC_HOME note that this points to the directory containing ucw.exe. If you do this, then you can copy the executable anywhere and it will still be able to find the header files.
標(biāo)簽： file executable the consists
上傳時(shí)間： 2013-12-17
上傳用戶：asddsd
Welcome to UnderC version 1.2.9w This package consists of the executable (UCW), a default script file, this file, and the library files. It is important that the header files end up in a include subdirectory of the directory where UCW is found. If you unzip this file using its path information ( use folder names ) this will automatically happen. You can optionally specify the UnderC directory with the environment variable UC_HOME note that this points to the directory containing ucw.exe. If you do this, then you can copy the executable anywhere and it will still be able to find the header files.
標(biāo)簽： executable consists Welcome package
上傳時(shí)間： 2015-12-18
上傳用戶：baiom
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