64k-DRAM-1979 Step 19 Pair This Generations DRAM with Contemporaneous Microprocessors
# Pair This Generation's DRAM With the Microprocessors It Actually Served
This series has treated the 64K DRAM generation almost entirely on its own terms; the systems that actually used this memory were built around specific, named microprocessors this project already covers in its own series, and that pairing deserves to be made explicit.
## 1. State the System-Level Pairing Directly
Microprocessor-based systems built around the generation of processors following Intel's 4004 (this project's own `microprocessor_1971` series) and its contemporaries needed main memory at a scale and cost core memory could not match economically — the same cost-per-bit argument this project's `dram_1968` series Step 15 built in the abstract, now applied to a specific, named pairing: general-purpose microprocessor systems as the demand driver that made this generation's DRAM volume (Step 16) commercially necessary rather than merely technically possible.
## 2. Trace What This Pairing Required From Both Sides
A microprocessor-based system needed memory addressed and refreshed in a way compatible with the processor's own bus timing — a real systems-integration constraint that the dedicated DRAM controller chips named in Step 10 (such as Intel's own 8203, built by the same company building contemporaneous processors) existed specifically to bridge, translating a processor's native bus signals into the RAS/CAS sequencing this series' Step 2 and Step 9 require.
## 3. Confirm This Pairing Closes a Real Gap in the Series
Without this step, this series would describe a memory architecture in isolation from the systems that actually consumed it — naming the microprocessor pairing explicitly here, rather than leaving it implicit, connects this series' own periphery-level architecture directly to the processor-level story this project's `microprocessor_1971` series already tells, without duplicating either series' own content.