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IA-32. IA-32 (short for " Intel Architecture, 32-bit ", commonly called i386 [1] [2]) [3] is the 32-bit version of the x86 instruction set architecture, designed by Intel and first implemented in the 80386 microprocessor in 1985. IA-32 is the first incarnation of x86 that supports 32-bit computing; [4] as a result, the "IA-32" term may be used ...
Apr 24, 2024 · The downloadable PDF of the Intel® 64 and IA-32 Architectures Optimization Reference Manual Volume 1 is at version 050, and Volume 2 is at version 050. Additional specifications, application notes, and technical papers may also be downloaded.
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Oct 8, 2019 · IA-32 is a 32-bit architecture. However, in addition to the 32-bit data type, it supports two auxiliary data types: 8-bit and 16-bit. Analysis results show that most of the instructions found in program code are 32-bit instructions (71.8%), while 16-bit and 8-bit instructions are rare (0.73% and 2.84% respectively).
- Yauhen Klimiankou
- klimenkov@bsuir.by
- 2019
unit receives a 32-bit address and either loads or stores an 8-bit quantity in that address. The lowest address possible is all zero bits. The highest address is all one bits. This number is 2**32-1 which is about four billion, which is appropriate for addressing up to four gigabytes of memory.
Microsoft PowerPoint - IA32-I.ppt. Modes, Registers and Addressing and Arithmetic Instructions. CS 217. Revisit IA32 General Registers. 8 32-bit general-purpose registers (e.g. EAX) Each lower-half can be addressed as a 16-bit register (e.g. AX) Each 16-bit register can be addressed as two 8-bit registers (e.g AH and HL) 31 16 15 8 7 0.
• IA-32 example: movl (%eax), %ecx! • EAX register stores a 32-bit address (e.g., 2000)! • Read long-word variable stored at that address! • Load the value into the ECX register! • Useful when address is not known in advance! • Dynamically allocated data referenced by a pointer!
IA-32 Intel® Architecture Software Developer’s Manual Volume 2: Instruction Set Reference NOTE: The IA-32 Intel Architecture Software Developer’s Manual consists of three volumes: Basic Architecture, Order Number 245470-012; Instruction Set Reference, Order Number 245471-012; and the System Programming Guide, Order Number 245472-012.
