64k-DRAM-1979 Step 8 Adopt Page Mode Access Reusing the Activated Row

# Adopt Page Mode: Reuse What Row Activation Already Left Standing

Step 3 established that one row activation disturbs an entire row's worth of cells as a side effect of addressing; this step asks whether that side effect can be turned into a deliberate advantage rather than only a refresh obligation.

## 1. State What Row Activation Leaves Available

Once a row is activated (Step 3's own mechanism) and its cells' charge is sensed onto the array's bit lines, every cell in that row is, briefly, available for column-level access without repeating the row-activation step — the same row-wide sensing this series' Step 3 treated purely as a refresh-scheduling obligation also makes an entire row's data accessible through successive column selections alone.

Adopt Page Mode: Reuse What Row Activation Already Left Standing Step 8 — 64k-dram-1979 State What Row Activation Leaves Available see Section 1 State the Page-Mode Access Scheme This Enables see Section 2 Connect Page Mode Back to This Series' Own Refre see Section 3 THREE-PART ARGUMENT, ONE STEP 64k-dram-1979 extension, step 8 of this project's DRAM lineage

## 2. State the Page-Mode Access Scheme This Enables

Page mode holds a row active (RAS held low, in this series' own Step 2 timing convention) across multiple successive column (CAS) cycles, each one accessing a different column within the already-activated row, without paying the full row-activation latency again for each access. Because row activation is the slower of the two timing phases this series' Step 2 established, accessing several columns within one held-open row is substantially faster, per access, than repeating a full row-plus-column cycle for each one.

Step 8 in the 64K-Dram-1979 Lineage what this step inherits and what it hands forward, by name Step 8 this step Inherits prior steps Hands Off named thread NO CELL-PHYSICS OR ARCHITECTURE RE-ARGUED each step adds a distinct angle; none re-derive settled prior content

## 3. Connect Page Mode Back to This Series' Own Refresh Accounting

Page mode does not change Step 4's refresh-cycle count — the row is still refreshed by the same activation this series already counted, whether or not a host takes advantage of page-mode access while that row happens to be open. It is a performance feature layered on top of the addressing-and-activation mechanism this series built, not a change to the architecture's refresh obligations.

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