| 以CGA卡为基础的智能显示系统 |
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| 引用本文： | 尹学军,杨楚民.以CGA卡为基础的智能显示系统[J].小型微型计算机系统,1994,15(4):47-50. |
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| 作者姓名： | 尹学军 杨楚民 |
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| 作者单位： | 华中理工大学 |
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| 摘 要： | 本文介绍了以微处理器与ＩＢＭ－ＰＣ上的彩色／图形适配器相结合构成的一种智能显示系统。本系统主要解决数控系统中主ＣＰＵ与６８４５ＣＲＴＣ争夺显示缓存的矛盾。保证了６８４５ＣＲＴＣ对显示缓存操作的时间要求；并且保证了数控系统中主ＣＰＵ对显示缓存操作的随意性。
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| 关 键 词： | CCGA卡 智能显示系统 |
AN INTELLIGENT CRT DISPLAY SYSTEM BASED ON CGA CARD |
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| Yi Xuejun, Yang Cumin.AN INTELLIGENT CRT DISPLAY SYSTEM BASED ON CGA CARD[J].Mini-micro Systems,1994,15(4):47-50. |
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| Authors: | Yi Xuejun Yang Cumin |
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| Abstract: | The paper introduces an intelligent CRT display system which consists of microcomputer and CGA card. This intelligent system mainly solves the contention for VRAM between the main CPU in CNC system and 6845 CRTC so that 6845 CRTC of display system can visit VRAM during required period and the main CPU of CNC system can visit VRAM whenever necessary. |
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| Keywords: | Intellectualizeation CCGA card Common RAM |
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