VAX 11/750
This article is for an old restoration project for a computer I no longer own, and is presented here for its historical relevance.
Picking up the Goods
27 October 2003
Drove to Albuquerque. This VAX had been sitting in a damp shed in Mountainair, New Mexico for a decade. The fellow I got it from was most accommodating and had lots of extras and info to offer. I'll definitely be going to him for future needs. He hooke d me up with a case of TU58 tapes, a DELUA, and was generally great to work with. Anyway, it was on the back of his dually pickup and we hefted it into a borrowed minivan.
Got it home. Talk about dirty! Mice had been using the VAX as a shelter, and they had left copious amounts of evidence. All over the unit. Also, plenty of very sinister looking spiders had taken up residence in the cardcage. Time for a shower and rest!
The box is a fairly basic configuration, with no FPA, 8MB RAM. I'd like to equip it with an L0001 FPA, a UDA50 SDI controller, a TU8x tape drive and controller, some disks (either SDI or Massbus), and a copy of VMS. Once I get it working, anyway...
Card Configuration
| Slot | Card | Description |
|---|---|---|
| 1 | OPEN | |
| 2 | L0002-E | Data Path Module (DPM) |
| 3 | L0003-K3 | Memory Interconnect (MIC) |
| 4 | L0004-N2 | Unibus Interconnect (UBI) |
| 5 | L0008-YA | Patchable Control Store (PCS) |
| 6 | OPEN | |
| 7 | OPEN | |
| 8 | L0007-B | Massbus Adapter (MBA) |
| 9 | OPEN | |
| 10 | L0016 | Memory Controller |
| 11 | M8750-CF | 1MB ECC MOS Memory |
| 12 | M8750-CP | 1MB ECC MOS Memory |
| 13 | M8750-CP | 1MB ECC MOS Memory |
| 14 | M8750-CJ* | 1MB ECC MOS Memory |
| 15 | M8750-CJ* | 1MB ECC MOS Memory |
| 16 | M8750-CJ | 1MB ECC MOS Memory |
| 17 | M8750-CJ* | 1MB ECC MOS Memory |
| 18 | M8750-CP | 1MB ECC MOS Memory |
| 19 | M9202 | Unibus Connector |
| 20 | M9202+FLIP CHIP(2) | Unibus Connector |
| 21 | G7273 | NPG and Bus Grant/Continuity |
| 22 | G7273 | NPG and Bus Grant/Continuity |
| 23 | OPEN | |
| 24 | G7273 | NPG and Bus Grant/Continuity |
| 25 | G7273 | NPG and Bus Grant/Continuity |
| 26 | G7273 | NPG and Bus Grant/Continuity |
| 27 | G7273 | NPG and Bus Grant/Continuity |
| 28 | M9313+FIL CHIP (2) | Unibus Exercisor/Terminator |