UNIBUS memories
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UNIBUS memory cards are available both from DEC, and from a number of outside vendors who produced and sold UNIBUS main memory cards. All the early UNIBUS memory was core; the first DRAMs did not appear until some time after the UNIBUS itself did. The DEC memories were invariably available in both parity, and non-parity, versions.
DEC
Core memory
- MM11-B core memory - 8-Kbyte
- MM11-C core memory - 16-Kbyte
- MM11-D core memory - 32-Kbyte
- MM11-E core memory - 8-Kbyte
- MM11-F core memory - 8-Kbyte (also MM11-FP)
- MM11-K core memory - 8-Kbyte
- MM11-L core memory - 16-Kbyte (also MM11-LP; ME11-L, MF11-L, MM11-S)
- MM11-U core memory - 32-Kbyte (also MM11-UP; MF11-U; MF11-UP)
- MM11-W core memory - 64-Kbyte (also MM11-WP; MF11-W; MF11-WP)
- MM11-Y core memory - 64-Kbyte
MOS memory
- MS11 32KB MOS memory - MS11-E, -F, -H, -J models (8, 16, 24, 32 Kbytes)
- MS11-L MOS memory - (64, 128, 192, 256 Kbytes)
- MS11-M MOS memory - (128, 256 Kbytes) - used non-standard voltages
Plessey
Core memory
- PM-1116B core memory - 32-Kbyte (maximum)
MOS memory
- PM-S1132 MOS memory - 64-Kbyte (maximum)
