Odd "endianness" [was Re: RE: Base 64 posts to the list]

dwight dkelvey at hotmail.com
Thu Dec 8 19:08:57 CST 2016

Not meaning to throw things to far off but on my

NC4000 machine( 16 bit ), I found ByteSwap useful enough that I had it

hard wired.

I have an old computer that was intended to do FFTs. It has a

complete bit order swap, MSB to LSB, instruction.

All interesting.


From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Noel Chiappa <jnc at mercury.lcs.mit.edu>
Sent: Thursday, December 8, 2016 1:30:48 PM
To: cctalk at classiccmp.org
Cc: jnc at mercury.lcs.mit.edu
Subject: Re: Odd "endianness" [was Re: RE: Base 64 posts to the list]

    > From: Rich Alderson

    > 9-track tapes on the PDP-10 used one of the following encodings:

What about 7-track, any idea? I would assume 6 x 6-bit tape frames per 36-bit
word, but that's just a guess.


More information about the cctalk mailing list