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AMD-K6 Datasheet(PDF) 36 Page - Advanced Micro Devices |
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AMD-K6 Datasheet(HTML) 36 Page - Advanced Micro Devices |
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36 / 346 page  18 Internal Architecture Chapter 2 AMD-K6® Processor Data Sheet 20695H/0—March 1998 Preliminary Information The multimedia unit shares pipeline control with the Integer X unit and executes all MMX instructions. The Integer Y execution unit can operate on the basic word and doubleword ALU operations — ADD, AND, CMP, OR, SUB, XOR, zero-extend and sign-extend operands. The branch condition unit is separate from the branch prediction logic in that it resolves conditional branches such as JCC and LOOP after the branch condition has been evaluated. Table 1. Execution Latency and Throughput of Execution Units Execution Unit Function Latency Throughput Store LEA/PUSH, Address 1 1 Memory Store 1 1 Load Memory Loads 2 1 Integer X Integer ALU 1 1 Integer Multiply 2–3 2–3 Integer Shift 1 1 Multimedia MMX ALU 1 1 MMX Shifts, Packs, Unpack 1 1 MMX Multiply 1–2 1–2 Integer Y Basic ALU (16- & 32-bit operands) 11 Branch Resolves Branch Conditions 1 1 FPU FADD, FSUB, FMUL 2 2 |
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