python 3.3 repr

Roy Smith roy at
Fri Nov 15 16:32:54 CET 2013

On Nov 15, 2013, at 10:18 AM, Robin Becker wrote:

> The pdp 10/15 had 18 bit words and could be organized as 3*6 or 2*9

I don't know about the 15, but the 10 had 36 bit words (18-bit halfwords).  One common character packing was 5 7-bit characters per 36 bit word (with the sign bit left over).

Anybody remember RAD-50?  It let you represent a 6-character filename (plus a 3-character extension) in a 16 bit word.  RT-11 used it, not sure if it showed up anywhere else.

Roy Smith
roy at

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