https://gunkies.org/index.php?action=history&feed=atom&title=MRV11-B_UV_PROM-RAM_Memory_Module 2026-09-28T09:54:22Z Revision history for this page on the wiki MediaWiki 1.43.9 https://gunkies.org/w/index.php?title=MRV11-B_UV_PROM-RAM_Memory_Module&diff=30484&oldid=prev 2023-07-13T18:10:33Z

<p>Stubby; mostly a place to hold Ext Links</p> <p><b>New page</b></p><div>The &#039;&#039;&#039;MRV11-B UV PROM-RAM Memory Module&#039;&#039;&#039; 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 &#039;&#039;&#039;M8021&#039;&#039;&#039;.<br /> <br /> {{stub}}<br /> <br /> ==See also==<br /> <br /> * [[MRV11-A Read-Only Memory Module]]<br /> * [[MRV11-C Read-Only Memory Module]]<br /> * [[MRV11-D Universal Programmable Read-Only Memory]]<br /> <br /> ==External links==<br /> <br /> * [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)<br /> * [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<br /> <br /> [[Category: QBUS ROMs]]</div>

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