View source for MRV11-B UV PROM-RAM Memory Module

The '''MRV11-B UV PROM-RAM Memory Module''' was a [[QBUS]] [[Read-only memory|ROM]] card. It held up to eight 8-bit x 1024 [[EPROM]] [[integrated circuit|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 [[DEC card form factor|dual]]-height card, the '''M8021'''.

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==See also==

* [[MRV11-A Read-Only Memory Module]]
* [[MRV11-C Read-Only Memory Module]]
* [[MRV11-D Universal Programmable Read-Only Memory]]

==External links==

* [http://www.bitsavers.org/pdf/dec/qbus/Digital_Microcomputer_Processor_Handbook_1979_80.pdf microcomputer processor handbook] - the MRV11-B is covered in Chapter 12, pp. 396-411 (pp. 406-421 of the PDF)
* [http://bitsavers.org/pdf/dec/qbus/MP00706-ET-LSI-11_Dec81.pdf ET-LSI-11 Field Maintenance Print Set] (MP00706) - the MRV11-B is covered on pp. 182-186 of the PDF

[[Category: QBUS ROMs]]