AMD AMD5K86 - Internal Architecture

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AMD5iJ6 Processor Technical Reference Manual
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Internal Architecture
The RISC design techniques used in the processor's internal
architecture account, in large part, for its high performance.
The following sections summarize the processor's execution
pipeline behavior, the hardware aspects of the internal instruc-
tion cache and data cache, and the hardware aspects of mem-
ory management.
Figure 2-1 shows the major logic blocks that make up the inter-
nal architecture. The blocks are organized in the figure by
stages of the processor's execution pipeline, which are listed
vertically on the right side of the figure. The blocks are
explained throughout the section that follows.
In this chapter, the terms clock and cycle refer to processor-
clock cycles. If bus-clock cycles or bus cycles are discussed,
they are explicitly named. Processor-clock cycles occur at a
multiple of bus-clock (CLK) cycles, as determined by the BF
input signal and processor model number.
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