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- ...eXtension') for a family of computers from [[Digital Equipment Corporation|DEC]]. They were the successors to the [[PDP-11]] series of [[minicomputer]]s. * [[:Category:DEC VAX systems|DEC VAX systems]]3 KB (388 words) - 16:50, 22 April 2024
- ...the [[UNIBUS]] general system [[bus]] from [[Digital Equipment Corporation|DEC]]. It was widely used in later [[PDP-11]]s and smaller [[VAX]]en. ...and address lines 0 through 12 to recognize their address(es). (Some QBUS CPUs do not even drive the high address lines during references to the I/O page.13 KB (2,043 words) - 23:27, 14 January 2024
- The '''PDP-11/34''' was [[Digital Equipment Corporation|DEC]]'s lower-cost replacement to the [[PDP-11/40]] as the low-end [[PDP-11]] s ...UNIBUS and QBUS termination|termination and pull-ups]] (unusual for PDP-11 CPUs); this is almost certainly the reason that the manual calls for the use of4 KB (536 words) - 19:28, 8 February 2024
- | manufacturer = [[Digital Equipment Corporation|DEC]] ...or [[KB11-D CPU]] (later units) high-performance [[Central Processing Unit|CPUs]], implemented in [[SSI]] [[Schottky TTL]] logic.6 KB (895 words) - 23:52, 29 February 2024
- ...f 16-[[bit]] [[minicomputer]]s designed by [[Digital Equipment Corporation|DEC]], in production from 1970-1990. Although the basic [[address space]] was 1 ...P-11/34]], [[PDP-11/44]] and [[PDP-11/23]]; it was standard in the [[KDJ11 CPUs]] (although in these machines an optional [[FPJ11 floating point accelerato13 KB (1,949 words) - 17:37, 29 February 2024
- ...cessor]] [[VAX]]; it had two [[KA780 CPU|KA780]] [[Central Processing Unit|CPUs]] connected to up to four [[MA780 Multiport Memory Option|MA780]] [[multi-p * [http://www.bitsavers.org/pdf/dec/vax/handbook/VAX_Hardware_Handbook_Volume_1_1986.pdf VAX Hardware Handbook3 KB (420 words) - 09:14, 15 July 2023
- ...he category [[:Category: Memories]] contains the sub-category [[:Category: DEC Memories]], which then contains the sub-sub-categories [[:Category: UNIBUS ...opriate; see the [[operating system]]s for [[Digital Equipment Corporation|DEC]] machines example below.7 KB (1,057 words) - 03:52, 27 April 2024
- ...and [[Windows]], VMS Software, Inc. (which is the current owner of most of DEC's assets) has a hobbyist program which allows licenses to be obtained for n ...vms-hw.html VAX/VMS Versions] - "which VMS versions are supported on which CPUs"2 KB (335 words) - 10:03, 27 April 2024
- ...[[Digital Equipment Corporation|DEC]] [[PDP-11]] [[Central Processing Unit|CPUs]]:658 bytes (116 words) - 02:18, 24 February 2019
- ...st of a number of [[MicroVAX]] models from [[Digital Equipment Corporation|DEC]]. It used the [[QBUS]] as its primary [[bus]] between the [[Central Proces Last interactive login on Saturday, 3-DEC-2022 17:5910 KB (1,525 words) - 21:20, 10 January 2024
- ...word]] [[mainframe]]-like systems built by [[Digital Equipment Corporation|DEC]]. They were basically a re-implementation of the earlier [[PDP-6]] [[instr ...ailable in [[multi-processor]] versions with two [[Central Processing Unit|CPUs]].11 KB (1,640 words) - 20:59, 8 March 2024
- Some time after this, some computers began to share memory between several CPUs. On these computers, access to the bus had to be prioritized, as well. [[Digital Equipment Corporation|DEC]] noted that having two buses seemed wasteful and expensive for small, mass14 KB (2,170 words) - 05:09, 5 September 2019
- ...upgraded version of the [[VAX-11/780|/780]]; its [[Central Processing Unit|CPUs]] used [[Advanced Schottky]] [[logic]]. A /780 could be upgraded to a /785 * [http://www.bitsavers.org/pdf/dec/vax/785/ 785] - documentation on [[BitSavers]]2 KB (193 words) - 04:26, 13 January 2024
- ...to build computers, and [[peripheral]]s for them. They were a successor to DEC's earlier [[System Module]]s. They were introduced as a replacement largely ...(the so-called 'solder' side); the contact pads were 'numbered' from the [[DEC Alphabet]]. A FLIP CHIP plugged directly into a 144-pin connector block [[b10 KB (1,460 words) - 15:50, 6 March 2024
- ...ightly-coupled [[multi-processor]]s with up to 4 [[Central Processing Unit|CPUs]]. [[Main memory]] was also connected to the SCU. The CPUs were heavily [[pipeline]]d, and were built from [[emitter-coupled logic|ECL3 KB (415 words) - 01:26, 2 January 2024
- * 1980-1985 - DEC PDP-11 Shop. Lots of different species of PDP-11's (04/24/34/40/44/70). R * 85-2001 - Initially DEC shop - PDP-11's running BSD 2.9. Then large crop of small Vaxen -- mostly11 KB (1,922 words) - 20:51, 7 February 2009
- ...nal state of the machine, were provided by [[Digital Equipment Corporation|DEC]] for their earlier computers (such as the [[KA10]]), in common with the ot ...]], although the PDP-11 CPU light displays were modest compared to earlier CPUs. The earliest PDP-11 disk controllers were very much a match for the earlie4 KB (612 words) - 20:33, 5 January 2024
- Qemu can emulate numerious CPUs and machine types. Most are geared towards running [[Linux]], the x86/x64 *[[DEC Alpha]] (really incomplete)15 KB (2,245 words) - 12:58, 27 February 2024
- | architecture = Originally [[MIPS]], then [[i386]], [[DEC Alpha]], [[PowerPC]], [[Itanium]], [[x64]] ...rsion of OS/2 that would be portable, and was targeted for the coming RISC CPUs. The goal was to design a micro kernel OS that could run 32 bit POSIX bina15 KB (2,465 words) - 20:47, 13 January 2024
- ...]] implementation of the [[PDP-11 architecture]], used in both the [[KDJ11 CPUs]], and a variety of peripherals. It was implemented in two [[integrated cir Most uses on DEC PDP-11 [[Central Processing Unit|CPU]] boards (all for the [[QBUS]]) contai2 KB (242 words) - 23:19, 29 February 2024
