MRV11-B UV PROM-RAM Memory Module

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The MRV11-B UV PROM-RAM Memory Module was a QBUS ROM card. It held up to eight 8-bit x 1024 EPROM chips; it thus held up to 8KB when fully populated. It also contained 512 bytes of static RAM. The entire ROM contents were directly visible on the QBUS, not through a window, unlike later, larger UNIBUS ROM cards. The MRV11-B was a dual-height card, the M8021.

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