I no longer have the time or interest to play with my "University Computing Company" 4K PDP-8/L. It's a box and front panel but no cabinet - can't tell if it was a rackmount or tabletop. After replacing almost all the 7440's and a few other IC's, it seems to be fully working and "talks" with my ASR33 (desktop, no stand). Many panel bulbs were bad so I have replaced them with LEDs/resistors - glows red instead of orange/white but doesn't burn out! The only problem is intermittent read errors from the tape reader that prevent me from reading in a long tape like FOCAL or PAL. RIM can be toggled in and it reads BIN successfully. I also have a homemade NVRAM DF32/DS32 128K emulator (you may have seen the posts this winter) which also appears to be working but may need some modification to work with DEC software. It stores and reads blocks of data, anyhow, and is a 99% complete emulation of the huge rackmount DF32 + 3 DS32 assembly. The interface is the standard five-cable posibus and I had my own "paddle" connector boards fabricated to use with standard 40 pin ribbon cables. I will include the (Eagle format) schematic and board files and hopefully someone can complete the project. Emailed pictures available. I'd like to sell the whole works (8/L, TTY and disk project) to a good home ;) otherwise it goes on E bay. -Charles