A1 Introduction to ARM Architecture
A1 Introduction to ARM Architecture
A1 Introduction to ARM Architecture
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<strong>ARM</strong> <strong>Architecture</strong> Versions<br />
• Version 1: Basic data processing, branch/branch with link,<br />
SWI, 26-bit address space, obsolete.<br />
• Version 2: Multiple/multiple-accumulate instruction,<br />
coprocessor, FIQ에 2개 banked register 추가, SWP/SWPB,<br />
obsolete.<br />
• Version 3: 32-bit address space, R15가 CPSW로 변경, SPSR<br />
들 추가, abort/undefined mode 추가, obsolete.<br />
• Version 4: halfword load/save 추가, <strong>ARM</strong>/Thumb state,<br />
system mode 추가, T variants 등장.<br />
• Version 5: Count leading zeros, efficient integer division,<br />
software breakpoint, E/J variant 등장.<br />
• Version 6: SIMD(audio/video codec), TrustZone, multiprocessing<br />
support, efficient exception handling.<br />
• Version 7: NEON advanced SIMD, vec<strong>to</strong>r floating point.<br />
<strong>A1</strong> <strong>Introduction</strong> <strong>to</strong> <strong>ARM</strong> <strong>Architecture</strong> <strong>A1</strong>-20
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