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,它們按 32 32的矩陣形式排列在 FPGA 芯片里,這相當(dāng)于 25 000 個等效門。它由 16 個輸人、 48個乘積項與陣列、 8 個輸出、 48個乘積項或陣列構(gòu)成,通過 NiCr 熔絲實現(xiàn)連續(xù)的斷開或連接。那個時期,典型的微處理器系統(tǒng)包含微處理器、存儲器和一些特殊功能 的中小規(guī)模( MSI/SSI)器件。推出的這款 FPGA 包括兩個器件和支持布同布線的設(shè)計工具。 桂林電子科技大學(xué)實訓(xùn)(論文)報告用紙 第 2 頁 共 36 頁 FPGA 的發(fā)展 和其他可編程邏輯器件一樣, FPGA 也由未完成的邏輯陣列所組成,通過將這些邏輯陣列連接到一起來完成一定的功能。它是作為專用集成電路( ASIC)領(lǐng)域中的一種半定制電路而出現(xiàn)的,既解決了定制電路的不足,又克服了原有可編程器件門電路數(shù)有限的缺點(diǎn)。 FPGA 的運(yùn)行速度快,管腳資源豐富,容易實現(xiàn)大規(guī)模的系統(tǒng)設(shè)計,有大量的軟核可用,便于進(jìn)行二次開發(fā)。 VGA 接口大多應(yīng)用在顯示器與顯卡之間;同時還可以應(yīng)用在彩色等離子電視輸入圖像的模數(shù)轉(zhuǎn)換上; VGA 接口同樣也是 LCD 液晶顯示設(shè)備的標(biāo)準(zhǔn)接口。Display Chinese characters。s Cyclone II FPGA series character design, CRT monitors scan path control using FPGA chip, d/a conversion system with VGA interface and the resistance work interconnection, on CRT monitors capable of displaying basic ASCII characters, characters, images, graphics, and 16bit color. While port is set to display Chinese characters, through instruction on display as the image size and position, which includes the dynamic display of graphics, image and control, the full realization of imitation of the intermediate dotmatrix LCD display. Set focus on the display controller for systemlevel design, using topdown design, the system core for finite state machines. Paper gives the plete set of design and process, detailed design and system modules, described in VHDL language are given. Completed state machine and simulation of the core module and the system as a whole. And then in the Quartus II software platform 11 design was pleted on the puter editing, pilation, simulation of a circuit, chip download programming to a specific destination, ultimately downloaded to the hardware circuit board test passed. Key words: FPGA。 論文 中給出了完整的設(shè)計思路和過程,并將系統(tǒng)分模塊進(jìn)行了詳細(xì)的設(shè)計,給出了 VHDL 語言描述。 桂林電子科技大學(xué)實訓(xùn)(論文)報告用紙 第 1 頁 共 2 頁 CRT 字符控制器設(shè)計 摘 要 本論文介紹了基于 Altera 公司的 Cyclone II 系列 FPGA 的 CRT 字符控制器 設(shè)計 ,利用 FPGA 芯片實現(xiàn)對 CRT 顯示器掃描軌跡控制, 采用 VGA 接口 和電阻 網(wǎng)絡(luò) D/A 轉(zhuǎn)換 進(jìn)行系統(tǒng)互聯(lián), 在 CRT 顯示器 上能夠 顯示基本的 ASCII 字符、漢字、圖像、 圖形和 16 位色彩。完成了狀態(tài)機(jī)和核心模塊以及系統(tǒng)整體的仿真驗證。VHDL。Dynamic display of graphics and images 桂林電子科技大學(xué)實訓(xùn)(論文)報告用紙 第 1 頁 共 1 頁 目 錄 摘 要 ...................................................................................................................................... 1 ABSTRACT ........................................................................................................................... 2 引言 ........................................................................................................................................... 1 1 FPGA和 VGA概述 ........................................................................................................... 1 FPGA 的概念 ................................................................................................................ 1 FPGA 的發(fā)展 ................................................................................................................ 2 FPGA 的工作原理 ........................................................................................................ 2 VGA 基本概念 .............................................................................................................. 3 VGA 顯示原理 .............................................................................................................. 4 VGA 接口定義 .................................................................................................. 4 VGA 時序控制 .................................................................................................. 4 2 系統(tǒng)設(shè)計 .......................................................................................................................... 6 設(shè)計思路 ..................................................................................................................... 6 系統(tǒng)功能結(jié)構(gòu)設(shè)計 ..................................................................................................... 6 系統(tǒng)層次模塊劃分 ..................................................................................................... 7 頂層模塊 .......................................................................................................... 7 各部分控制模塊 .............................................................................................. 7 用戶模式 底層模塊 .......................................................................................... 9 系統(tǒng)硬件語言描述 ................................................................................................... 11 描述思路 ................................................................................................ 11 總體電路的描述 ............................................................................................ 11 分塊電路的描述 ............................................................................................ 15 系統(tǒng)仿真驗證 ........................................................................................................... 28 3 結(jié)果與分析 ................................................................................................................... 30 實現(xiàn)功能說明 ........................................................................................................... 30 器件資源分析 ........................................................................................................... 31 故障與問題分析 ....................................................................................................... 32 4 總結(jié) ................................................................................................................................. 33 謝 辭 .................................................................................................................................... 34 參考文獻(xiàn) ...............................................................................................................................