Masm lodsb. Remove the byte [esi] part, NASM won't accept e...

  • Masm lodsb. Remove the byte [esi] part, NASM won't accept explicit operands for string instructions. It explains instructions like LODSB, MOVSB, STOSB, CMPSB, and SCASB that are used to load, store, compare and scan bytes within strings. Learn about the Assembly LODS instruction, its syntax, usage, and examples to understand how it works in Assembly language programming. When UP=1, the processor auto-decrements (accesses occur from higher memory addresses to lower ones). We recommend the latter syntax, since it is consistent with other syntactic features of the language, but for instructions such as LODSB, which has no operands and yet can require a segment override, * UP (Direction): The direction flag controls string instructions like lodsb and movsb. take a password, change it a little bit, store it together with normal text so that people who are not supposed to see the content cannot just open Loads a byte (B), word (W), or doubleword (D) from the source operand into the AL, AX, or EAX register, respectively. These instructions Key String manipulation instruction in 8086 instruction sets includes different instructions such as MOVSB, CMPSB, SCASB, LODSB, STOSB, and other instructions which are going to be . e. Use lodsb / lodsw / lodsd / lodsq to indicate operand-size with the mnemonic itself, not with operands. The size of the source and destination operands is selected with the mnemonic: LODSB (byte loaded into register AL), LODSW (word loaded into AX), or LODSD (doubleword loaded into EAX). So you want to do some basic encryption, i.


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