Memory
64 KiB of dynamic RAM filling the entire sixteen-bit address space, with ROM and I/O banked over the top of it rather than beside it.
| Metric | Value | Evidence | Basis | Method | Source |
|---|---|---|---|---|---|
| Memory capacity memory | 64 KiB | Confirmed | Vendor-rated | Design capacity Stated by the vendor Dynamic RAM filling the whole sixteen-bit address space. Exactly 65 536 B: the manual's "64K" is a binary kilobyte. The ROM capacity is recorded separately and overlaps this address range rather than extending it, so the two must never be added. |
65 536 B
a + b + … sum v1 Adds 1 memory-capacity figure obtained by design-capacity. Left out: 20 KiB (read-only, so it is storage the machine reads from rather than memory it works in). A total is only as trustworthy as the decision about what belongs in it, so both the terms and the exclusions are named records.