Difference between revisions of "MRV11-C Read-Only Memory Module"
From Computer History Wiki
m (→External links: +Microcomputer Products Handbook) |
m (→Further reading: Programming the MRV11-C) |
||
| (One intermediate revision by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | [[Image:MRV11C.jpg|thumb|250px|right|MRV11- | + | [[Image:MRV11C.jpg|thumb|250px|right|MRV11-C board (without PROMs)]] |
The '''MRV11-C Read-Only Memory Module''' was a [[QBUS]] [[Read-only memory|ROM]] card. It held up to sixteen 8-bit x 4K ROM/[[PROM]]/[[EPROM]] [[integrated circuit|chips]]; it thus held up to 64KB when fully populated. The entire ROM contents were either directly visible on the QBUS, or through two independent 2KB windows (somewhat like later, larger [[UNIBUS]] ROM cards). The MRV11-A was a [[DEC card form factor|dual]]-height card, the '''M8048'''. | The '''MRV11-C Read-Only Memory Module''' was a [[QBUS]] [[Read-only memory|ROM]] card. It held up to sixteen 8-bit x 4K ROM/[[PROM]]/[[EPROM]] [[integrated circuit|chips]]; it thus held up to 64KB when fully populated. The entire ROM contents were either directly visible on the QBUS, or through two independent 2KB windows (somewhat like later, larger [[UNIBUS]] ROM cards). The MRV11-A was a [[DEC card form factor|dual]]-height card, the '''M8048'''. | ||
| Line 10: | Line 10: | ||
* [[MRV11-B UV PROM-RAM Memory Module]] | * [[MRV11-B UV PROM-RAM Memory Module]] | ||
* [[MRV11-D Universal Programmable Read-Only Memory]] | * [[MRV11-D Universal Programmable Read-Only Memory]] | ||
| + | |||
| + | ==Further reading== | ||
| + | |||
| + | * ''Programming the MRV11-C'', [[MicroNote]] #061 | ||
==External links== | ==External links== | ||
Latest revision as of 21:13, 28 July 2024
The MRV11-C Read-Only Memory Module was a QBUS ROM card. It held up to sixteen 8-bit x 4K ROM/PROM/EPROM chips; it thus held up to 64KB when fully populated. The entire ROM contents were either directly visible on the QBUS, or through two independent 2KB windows (somewhat like later, larger UNIBUS ROM cards). The MRV11-A was a dual-height card, the M8048.
See also
- MRV11-A Read-Only Memory Module
- MRV11-B UV PROM-RAM Memory Module
- MRV11-D Universal Programmable Read-Only Memory
Further reading
- Programming the MRV11-C, MicroNote #061
External links
- microcomputer processor handbook - the MRV11-C is covered in Chapter 12, pp. 412-444 (pp. 422-454 of the PDF)
- Microcomputer Products Handbook - the MRV11-C is covered in Chapter 10 (pp. 145-169 of the PDF)
- ET-LSI-11 Field Maintenance Print Set (MP00706) - the MRV11-C is covered on pp. 187-193 of the PDF
