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A friend suddenly showed up at my front door with a large truck full of computers.

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First out of the truck were these two DEC racks. The left one is a TU80 tape drive, with two RL02 drives on top.

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The rack on the right has another RL02 drive and the RA80 that was in the TU80 rack on it. In it is something which might be a PDP11 bus extender chassis, and a cabinet with an ESDI drive for a Micro-PDP. (I am of course going to mount the drives back in the racks later. New pictures on this page when that is done.)

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The TU80 drive is the tape drive for this PDP11/84. One of the RL02s was in the opening above the PDP. The TU80 you see in this picture is the tape drive of my VAX11/750 the PDP has been parked next to.

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It really is an 84 as you can see. I never had a PDP this fast.

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Second out of the truck was this PDP8/e.

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It only has a high speed reader/puncher as a periphal. There already were disks in those days, the RK03 and RK05 drives with removable 2.5mb 14 inch cartridges, but they were very expensive and not very reliable.

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It was made in 1974. (The picture doesn't look too good, because it was hard to find a spot to prevent the flash reflecting off the front panel.)

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Now to find the time to find out what all the cards do...

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This was at the bottom of the 8/e. It is a 230-115 step down transformer for the periphals and cabinet fans. The PDP-8/e itself can operate on 230v. The step down transformer seems to have valves! Actually they are high current switches.

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But the piece de resistance was this original PDP8, made in 1967.

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My friend said I could keep all other stuff he brought in, but this PDP8 he was going to take home with him as soon as he could find a spot for it. I can't blame him for that.

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The back side of the PDP8. At the bottom in the middle a voltmeter to check the power supply, and on the left a counter which shows the machine was used for more than 30.000 hours.

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It has lots of small cards with transistor logic on them.

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I had to take the cover off to look for the warranty sticker. It was not on the left...

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...but it was on the right. The machine was checked out at Reading on XII.67.

I don't think I am going to get my PDP8 to work soon, first I'm going to read up on its history at Doug Jones' PDP8 page. My friend will have his working sooner I guess, since he was already writing programs for it a long time ago.

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