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I have two RL02 disk drives:
These theoretically hold about 3.5Mwords per disk pack. In practice, 128
words were stored per sector, not 170, so the effective capacity on a PDP-8
(running the usual operating system) was 2 surfaces X 256 cylinders X 40 sectors/track
X 128 words, or 2,621,440 12 bit words.
They were also about half-again as fast as the RK05.
I plan to rack these up properly and hang them off one of my PDP-8/A CPUs.
The RL8A controller for them requires a hex backplane slot, which is too large
for an 8/E (without an expansion backplane, anyway).
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Last updated on 12/20/11 09:11
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