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AMD-K6-2E/233AMZ Datasheet(PDF) 174 Page - Advanced Micro Devices |
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AMD-K6-2E/233AMZ Datasheet(HTML) 174 Page - Advanced Micro Devices |
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174 / 332 page ![]() 156 Bus Cycles Chapter 6 AMD-K6™-2E Processor Data Sheet 22529B/0—January 2000 Preliminary Information AHOLD-Initiated Inquire Hit to Shared or Exclusive Line In Figure 62, the processor asserts HIT# and negates HITM# off the clock edge after the clock edge on which EADS# is sampled asserted, indicating the current inquire cycle hits either a shared or exclusive line. (HIT# is driven in the same state until the next inquire cycle.) The processor samples INV asserted during the inquire cycle and transitions the line to the Invalid state regardless of its previous state. During an AHOLD-initiated inquire cycle, the processor samples AHOLD on every clock edge until it is negated. In Figure 62, the processor asserts ADS# off the same clock on which AHOLD is sampled negated. If the inquire cycle hits a modified line, the processor performs a writeback cycle before it drives a new bus cycle. The next section describes the AHOLD-initiated inquire cycle that hits a modified line. |
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