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二、电路分析TA2160有六块主要电路板:总体逻辑控制、中央处理单元板(CPU 板),时钟发生及扩展触发限定板(ACQ1板),数据获取、触发、时钟限定板(ACQ2A、2B板),组合延迟触发、高速获取板(ACQ3A、3B 板)。其它还有反汇编板、接口板。整机方框图如图9所示。(一)中央处理单元板中央处理单元板由如下三个部份组成:Z80和CPU 有关的存贮器和控制逻辑电路;键盘编码器与有关的控制逻辑电路;视频显示控制器、有关的存贮器和控制逻辑电路。现分述如下:1.Z80的16位地址分配 TA2160由 Z80微处理器控制,其32K 软程序存贮在4块只读存贮器(EPROM 2764)之中。通过图10所示的译码器 IC_1、IC_2及非门、或门电路,采用高位地址译码方法。当IC_1的15脚及 IC_2的1脚一旦出现低电平信号,立即
Second, the circuit analysis TA2160 has six main circuit board: the overall logic control, the central processing unit board (CPU board), the clock occurs and extended trigger limited board (ACQ1 board), data acquisition, triggering, clock limitation board (ACQ2A, 2B board ), Combined delay trigger, high-speed acquisition board (ACQ3A, 3B board). There are other disassembled board, interface board. The whole block diagram shown in Figure 9. (A) of the central processing unit board Central processing unit board consists of the following three parts: Z80 and CPU-related memory and control logic circuit; keyboard encoder and the associated control logic circuit; video display controller, the relevant storage Memory and control logic. Now described as follows: 1.Z80 16-bit address allocation TA2160 controlled by the Z80 microprocessor, the 32K soft program stored in four read-only memory (EPROM 2764) among them. The high-order address decoding method is adopted by the decoders IC_1 and IC_2 and the NOT gates and OR circuits shown in FIG. 10. When IC_1’s 15 feet and IC_2 1 foot once a low signal, immediately