| Mus.Cat. NEWUC:2003.10 | Mnfctr: IBM | Date: 3.12.1968 | Form. No: Z22-6608-2 | Pages: 69 |
| Comp: Manual | Height: 279 mm | Width: 216 mm | Thickness: 10 mm | Weight: 796 g |
Thirty Six core planes were stacked one above the other and connected such that
the 128 "X" and 128 "Y" wires threaded every plane.
It was 36 core planes because one bit of four 8-bit Bytes plus 1 parity bit per Byte
was stored on each plane.
It was called a "BOM" (Basic Operational Memory unit).
Information above reproduced by permission of IBM from,
IBM Field Engineering, Theory of Operation, 2365 Processor Storage, Form No. Z22-6608-2, Date December 3, 1968