Memory
64 KiB writable main RAM.
provisional A figure marked provisional is recorded but not accepted: its evidence is unsettled. It may rely on one source, an unconfirmed announcement, or a digit read from a damaged scan. The reason appears under the figure. The catalog shows the figure but never uses it in a multiplier. How records are judged.
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Memory capacity memory provisional | 64 KiB | Confirmed | Vendor-rated | Design capacity Stated by the vendor Provisional record for sega-mega-drive: the cited primary manual is registered, but its page-level transcription and independent review are still pending. |
65 536 B
a + b + … sum v1 Adds 1 memory-capacity figure obtained by design-capacity. Left out: not applicable (removable program storage, not memory the console can write to). A total is only as trustworthy as the decision about what belongs in it, so both the terms and the exclusions are named records.