原创 GMS81004单片机解密

这里我们提供对GMS81004单片机的基本性能特征介绍，因为在GMS81004解密等IC解密、单片机解密过程中，对单片机本身内部结构特征及加密性能有一定的了解，能够帮助客户更好的理解单片机解密技术，帮助解密工程师进行加解密特性分析以选择最合理的解密方案。
　　有GMS81004解密等单片机解密需求者请与芯谷芯片解密研究所联系咨询更多解密详情
文章来自：　　
关于LG(HYUNDAI)：http://www.szxpjm.com/ic/GMS81004dpjjm__xg_110.html
　　MagnaChip Semiconductor（前身为现代Hynix 半导体公司的系统集成电路业务）是全球领先的半导体生产商之一，具备世界级的技术能力，并且在韩国设有5家晶圆厂。该公司开发、生产和分销系统集成电路芯片，主要致力于显示驱动集成电路、CMOS（互补金属氧化半导体）影像传感器与应用解决方案处理器，并经营代工厂业务。MagnaChip 具备世界级的生产能力以及数千种专利的广泛组合。
　　关于GMS81004部分特征介绍：
　　A register
　　- 8bit Accumulator.
　　- In the case of 16-bit operation, compose the lower 8-bit of A, upper 8bit in Y (16-bit Accumulator)
　　- In the case of multiplication instruction, execute as a multiplier register. After multiplication operation, the lower 8-bit of the result enters. (Y*A ?? YA)
　　- In the case of division instruction, execute as the lower 8-bit of dividend. After division operation, quotient enters.
　　X register
　　- General-purpose 8-bit register
　　- In the case of index addressing mode within direct page(RAM area), execute as index register.
　　- In the case of division instruction, execute as register.
　　Y register
　　- General-purpose 8-bit register
　　- In the case of index addressing mode, execute as index register
　　- In the case of 16-bit operation instruction, execute as the upper 8-bit of YA (16-bit accumulator).
　　- In the case of multiplication instruction, execute as a multiplicand register. After multiplication operation, the upper 8-bit of the result enters.
　　- In the case of division instruction, execute as the upper 8-bit of dividend. After division operation, remains enters.
　　- Can be used as loop counter of conditional branch command. (e.g.DBNE Y, rel)