MSV11-M QBUS memory
The MSV11-M (M7506) is a dual-height QBUS DRAM main memory card. The MSV11-MB (M7506-BA) holds 1 MByte when fully populated with 256K DRAMs chips, the MSV11-MA (M7506-AA) is half-populated (the only partially-filled configuration allowed) and holds 512 Kbytes.
The memory is arranged as 2 banks, each 16 data bits (1 PDP-11 word) wide, with 2 additional bits for parity (1 per byte). It is a Q22 card; it reportedly supports QBUS block mode.
Configuration
No documentation on the MSV11-M is extant, so it is currently not known how to configure it.
Technical information
As far as is known, there are no copies of the engineering drawings extant for the MSV11-M.
Further reading
- MSV11-M User Guide, EK-MSV1M-UG
- MSV11-M Field Maintenance Printset (MP-02053 - not online)
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