DR11 parallel interface: Difference between revisions

From Computer History Wiki
Jump to navigationJump to search
+DRV11-C
m Link DR11-B
Line 2: Line 2:


* DR11 (sometimes called the DR11-A): programmed I/O, [[quad]] [[SPC]] slot
* DR11 (sometimes called the DR11-A): programmed I/O, [[quad]] [[SPC]] slot
* DR11-B: DMA, 4-slot [[system unit]]
* [[DR11-B parallel interface|DR11-B]]: DMA, 4-slot [[system unit]]
* DR11-C: single-board replacement for the DR11-A
* DR11-C: single-board replacement for the DR11-A
* DR11-W: [[hex]] single-board replacement for the DR11-B
* DR11-W: [[hex]] single-board replacement for the DR11-B

Revision as of 14:35, 4 June 2017

The DR11s were a series of parallel interfaces for the UNIBUS and QBUS. Some used DMA, others were programmed I/O. They included, for the UNIBUS:

  • DR11 (sometimes called the DR11-A): programmed I/O, quad SPC slot
  • DR11-B: DMA, 4-slot system unit
  • DR11-C: single-board replacement for the DR11-A
  • DR11-W: hex single-board replacement for the DR11-B

and for the QBUS:

  • DRV11: as for the DR11, on a dual card
  • DRV11-J: 4 DRV11's on a dual card
  • DRV11-B: DMA, quad card, 18-bit DMA addresses
  • DRV11-W: DMA, dual card, 22-bit DMA addresses

There is also a DRV11-C (M8040), but little is currently known about it.

All use the same interface, except the DRV11-J, which for space reasons uses a different header on the card.