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Retrocomputing

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  • That is... wow! 11 unused address lines. Thanks for sharing this, and welcome to the site. Commented Jul 23, 2017 at 9:52
  • Thx! I've been reading for quite a while but hadn't had too much to post. ;-) Commented Jul 23, 2017 at 10:28
  • With super computers, I imagine you’d be limited by the base configuration, which tends to be quite large. Commented Jul 23, 2017 at 11:12
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    One example of a modern server setup is Dell’s R930 which starts at 8GB and can be configured with 12TB (although the specs say it only supports 3TB). Commented Jul 23, 2017 at 11:14
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    Re: the comment about modern servers; maybe the question could have been phrased on a logarithmic scale: approximately "how many spare address lines were there, proportionally", as an approximate measure of how much 'room for extra' was designed in? Then a ZX81 scales from 2^10 to 2^16 bytes of RAM, so that's a logarithmic multiplier of 1.6. The Amiga goes from 2^21 to around 2^30.2, so that's a multiplier of around 1.43. The Dell goes from 2^32 up to 2^38 so that's around 1.19. From 8gb to 12tb would be ~1.32. Etc. Commented Jul 25, 2017 at 14:33