PDP-11/34A acquistion and questions -

First of all, congratulations! That's a great haul. The table of contents of the DSD-880 manual does not reference a PDP-8 interface, while the DSD-440 manual does. FWIW -- Ian ________________________________________ From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of Jack Rubin [jack.rubin at ameritech.net] Sent: Saturday, December 26, 2009 6:09 AM To: cctech at classiccmp.org Subject: PDP-11/34A acquistion and questions - I recently rescued the following system: One full size (H960)rack cabinet containing (from the top down) - DEC PDP-11 crest Telebyte TDX 1/2" tape drive PDP-11/34A w/ full programmer's console Data Systems Design (DSD) 880-120 homebrew connector panel Wesperline I/O unit One "corporate highboy" cabinet (VAX style) RLO2 drive BA11-KE chassis non-racked items - 2nd RLO2 drive DSD twin floppy system, 110/430 additionally - 8 disk packs + "pack rack" several boxes of 8" floppies, including an install set for RT-11 V5.1c, configured by Cambridge Digital, dated 1984 card inventory (by chassis slot) - - 11/34A (chassis marked 11/34A XX) (1) M8266 control module (KD11-EA) (2) M8265 datapath module (KD11-EA) (3) M8267 floating point (FP-11A) (4) M7859 programmer cons (KY11-LB) (5) M8268 cache board (KK11-A) (6) M7801 data word cntrl (MC11) [I think I must have misread the card number and this is really M7891, 128KW MOS RAM, but I haven't yet verified that] (9)<->(11) M9202 backplane jumper (12)DSD 808830 controller for DSD 880-120 (13)DILOG DU130 tape controller (14)M7865) SLU+RTC (DL11-W) - BA-11-KE (3) M7860 parallel I/O (DR11-C) (5)&(6) MSP-3/A, MSP-3/C Computer Design Assoc. boards (8) M7762 RL02 disk controller (RL11) (9)<->(11) M9202 backplane jumper (12)&(13) MDP-3/M CDA boards (includes 4 AMD 2903 SuperSlice chips) Pictures at: http://tinyurl.com/pdp1134a ************************* The system was apparently used for data logging and analysis in a windtunnel application. Questions: 1) Can anyone provide more info on the Computer Design Associates board sets? Each of the board sets is comprised of two boards in adjoining slots with ribbon cables across the board tops. I've emailed the researcher who used this system in the early '80s but haven't heard back from him yet. 2) Are there PDP8 device interfaces for either the DSD430 or DSD880? The 430 emulates a pair of RX02's; the 880 emulates an RX02 + RL02 and is capable of formatting floppy disks in stand-alone mode. From the bitsavers manuals, I see that there is a PDP8 interface (DSD 2131) for the 210 and 440 chassis, but it's not clear if there were similar interfaces for the other units or if the 2131 will support the 430 chassis. Thanks for any help, Jack