Turning Archive

Subject:
Re: PDP
Response To:
PDP *PIC* ()

Bill Howatt
That's really neat, most people don't even know about core memory these days.

I worked with one of the original "clam shell" PDP-8s which was pre-integrated circuit and was constructed of what DEC called plug-in Flip-Chip modules. All the logic on the boards was discrete transistors and diodes. DEC later came out with the 8/I which was built with integrated circuits.

It had 2 4K 12-bit words memory modules and 2 fixed head disks which held 16 or 32KB each. The disks ran all the time and when the power was turned off you could hear the heads screeching on the platters when they slowed down. We never had any trouble with the disks.

Bill

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