[HECnet] PDP-11/24

-----Original Message----- From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Dave McGuire Sent: Wednesday, November 28, 2012 12:01 To: hecnet at Update.UU.SE Subject: Re: [HECnet] Area 11 going offline for sometime On 11/28/2012 10:28 AM, Gregg Levine wrote: How big is a PDP 11/24, physically? I'm not exactly sure, I only saw one for a few minutes, and that was about twenty years ago. I believe about the size of a good sized kitchen table. And about fridge sized. (Refrigerator to all of you.) This really depends on what you mean by "PDP-11/24". The processor chassis is quite small (in PDP-11 terms), either a 3U or 6U rack mount box. When built into a *system*, with drives and what not...it will be larger of course. The largest "factory" 11/24 system I've seen was two short racks, not much to it. The 11/24 is a very late-model PDP-11, based on the F-11 chip, same as the 11/23. Not fast, but low power consumption and pretty reliable. Dave this is the fault of a big brown fellow watching you. They allllways do. :-( -Dave -- Dave McGuire, AK4HZ New Kensington, PA The 11/24 is a PDP-11/23+ on the UNIBUS. It can accommodate the FPU (chip or board) and the CIS chipset. The size of the unit varies. The largest front panel is 1 DEC system unit (10.5 inches tall) that fits in a 19 inch rack. I managed one of these (a long time ago) that ran RSX-11M with LDP gear. It also ran RTEM-11 (RT-11 Emulator), when I supported RT-11 at DEC Software Services. Several users could work on RTEM-11 at the same time as the LDP hardware was being used. The system never missed a beat! Oh... The entire system ran on two (2) RL02's!!! -Steve