Hi! Some of these flip-chips are listed in my copy of the Digital Logic Handbook (1970 Edition)... in addition to the information below, if you need pinout information I can make some scans... :) PDP-8 Device Selector. "This module is used to decode the six device selector bits transmitted in complement pairs on the PDP-8 or PDP-8/S I/O bus, and it provides standard pulses to the selected device. The device code is selected by cutting one diode of each pair, BE or BF, etc. off the board. Device coding can also be accomplished by selective wiring of the bus inputs to the diode pairs. Power: +10V (A)/6.4 mA; -15V (B)/57 mA. (New list price was $52 in 1970!!) Below are details on the other modules listed in this handbook: ... The M051 (Level Converter) contains 12 level converters to shift K and M series logic levels to negative logic levels of ground and -3 volts. The M111 inverter consists of 16 TTL inverters. The M113 consists of 10 2-input TTL NAND gates. The M206 is a hex D flip-flop. This is a negative edge-triggered Dual Delay Multivibrator, which is adjustable from 50 nsec to 7.5 msec using it's internal capacitors. This is a Negative Input Converter for interfacing negative logic levels to M and K series logic. It consists of six non-inverting converters. The M624 provides 15 TTL bus drivers for driving PDP-8/I or PDP-8/L's that use positive input busses. These also contained gating to support Program Interrupt, I/O Skip, and Clear AC functions. Diode network for expanding inputs of R, W, and A series modules. Dual flip-flop. Requires +10 and -15V supplies. Crystal clock (frequency should be stamped on the can). Dual inverting bus driver for high-current loads. This is a pulse output converter for use with "Digital Laboratory and System Modules". Teletype transmitter. Hope this helps! Best wishes, Bob Lash bob(a)bambi.net ------------------------------------------- On Mon, 10 May 1999, Kevin McQuiggin wrote: > From: Kevin McQuiggin <mcquiggi(a)sfu.ca> > > Hi Gang: > > I'm on a semi-yearly business trip to Ottawa, Ontario. I stopped in this > evening at the friendly local computer recycler. Looks like I might have > hit a jackpot in regard to many pounds of old DEC cards. > > These are of the "Flip Chip" variety, and if I recollect correctly, they > may be cards from a STRAIGHT 8!!!!! > > The machine is nowhere in sight, as they are a scrap metal place it was > like chopped up over the last couple of weeks. > > Here is a list of the cards. Those in the know, can you advise me and > others whether these are of interest. I had the owner put the box aside > until I call him back. > > Total is about 30 pounds of cards. The list contains a sample only. There > are, in some cases, 5-6 cards of each type. There are some Q bus and Unibus > cards listed too, can you identify them? > > B014 > G180 > G208 > G603 > G808 > G808 > G938 > M051 > M3106 4 LINE MUX > M3118YA > M3118YA > M7164 > M7270 LSI-11/02 CPU > M7608 2-4 MB RAM > M7819 8 PORT SERIAL I/O > M7942 VT72 BOOT > M7946 RX01 CONTROLLER > M8029 RX02 CONTROLLER > M8029 RX02 CONTROLLER > M8203 RS449 WITH MODEM > M8956 > M8956 > M8957 > M8957 > R210 > R210 > R211 > R220 > R220 > S111 > S181 > S202 > S203 > S603 > W026 > W998 > > If these cards are indeed rare, or of value to anybody on the list, LET ME > KNOW OVER THE NEXT COUPLE OF DAYS, so I can pick them up and hold them for > you, for shipping and my out-of-pocket costs, of course. > > Please post to the list, and email me directly, > > Kevin > > > > ------------------------------------------------------------------------ > Looking to expand your world? > http://www.onelist.com > ONElist has over 145,000 email communities from which to chose! >