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1 前言 PROM市场追寻扩大的一条道路,正在广泛的领域里使用。FAMOS型以POS、微型计算机等低速的控制器为中心,双极型在微程序、高速控制器、小型计算机、I/O控制器、POS终端等领域内应用。虽然,PROM的写入方式是各种各样的,但是,这里介绍的ROM程序(T-310/27),由于各种功能板的更换,表1中任何一种PROM的写入都是可能的(参考照片1～3)。本文就FAMOS中最有名的英特尔公司制造的1702 A的写入方法和问题加以叙述。
1 Introduction The PROM market is finding its way to wider use and is being used in a wide range of areas. FAMOS type POS, microcomputer and other low-speed controller as the center, bipolar in the micro-program, high-speed controller, small computer, I / O controller, POS terminals and other fields. Although PROMs are written in a variety of ways, the ROM program (T-310/27) introduced here is likely to be written in any of the PROMs shown in Table 1 due to the replacement of various function boards (Reference pictures 1 to 3). This article describes the 1702 A write methods and problems made by Intel Corporation, best known in FAMOS.