尽管2900系列的处理机电路不是第一个4位双极型位片系列,但也许是所有位片系列中最灵活的一种。此外,由于具有双极型-肖特基电路的速度,即每条指令执行时间为90～200ns,这些电路可组装成具有任何字长的计算机系统(图1)。AMD 公司研制的基本系列是由2901的4位算术与逻辑部件(ALU)及2909微程序序列器(图2)构成的。由于输入与 ALU 功能的组 Although the 2900 series processor circuit is not the first 4-bit bipolar bit-slice family, it is perhaps the most flexible of any bit-slice family. In addition, these circuits can be assembled into computer systems of any word size (Figure 1) due to the speed of a bipolar-Schottky circuit, ie 90 ~ 200ns per instruction execution time. The basic series developed by AMD is composed of 2901 arithmetic and logic unit (ALU) and 2909 micro-program sequencer (Figure 2). Due to the grouping entered with the ALU function