QBUS memories
From Computer History Wiki
QBUS memory cards are available both from DEC, and from a large number of outside vendors who produced and sold QBUS memory cards.
Like the QBUS itself, QBUS memory cards can be divided into Q16, Q18 and Q22 memories. In addition, DEC later specified the PMI memory bus, an extension of the QBUS, and some memory cards have dual QBUS/PMI capability.
DEC
Core memory
- MMV11-A - 8-Kbyte unit (H653 and H223)
MOS memory
- MSV11-B - 8-Kbyte (external refresh - M7944)
- MSV11-C - (on-board refresh - M7955)
- MSV11-CA - 8-Kbyte
- MSV11-CB - 16-Kbyte
- MSV11-CC - 24-Kbyte
- MSV11-CD - 32-Kbyte
- MSV11-D - (no parity - M8044)
- MSV11-DA - 8-Kbyte
- MSV11-DB - 16-Kbyte
- MSV11-DC - 32-Kbyte
- MSV11-DD - 64-Kbyte
- MSV11-E - (parity - M8045)
- MSV11-EA - 8-Kbyte
- MSV11-EB - 16-Kbyte
- MSV11-EC - 32-Kbyte
- MSV11-ED - 64-Kbyte
- MSV11-L - (M8059)
- MSV11-LF - 128-Kbyte
- MSV11-LK - 256-Kbyte
- MSV11-M - (M7506)
- MSV11-MA - 512-Kbyte
- MSV11-MB - 1-Mbyte
- MSV11-P - (M8067)
- MSV11-PF - 128-Kbyte
- MSV11-PK - 256-Kbyte
- MSV11-PL - 512-Kbyte
- MSV11-Q - (M7551)
- MSV11-QA - 1-Mbyte
- MSV11-QB - 2-Mbyte
- MSV11-QC - 4-Mbyte
- MSV11-SA - 2-Mbyte
