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- Subject: Re: [ANN] Lua 5.2.0 (work1) now available
- From: Tony Finch <dot@...>
- Date: Fri, 15 Jan 2010 16:53:30 +0000
On Fri, 15 Jan 2010, David Given wrote:
> IBM got this wrong with their POWER architecture, which eventually
> evolved into PowerPC: the processor was big-endian, and they numbered
> their bits in memory order, not in MSB-LSB order. This meant that in all
> their manuals bit 0 was the MSB and bit 31 was the LSB... with the
> utterly hilarious side effect that all the bit numbers changed if you
> switched the processor from 32 bit mode to 64 bit mode.
This is a long-standing tradition in the IBM world.
See also RFC 791 appendix B.
f.anthony.n.finch <email@example.com> http://dotat.at/
GERMAN BIGHT HUMBER: SOUTHWEST 5 TO 7. MODERATE OR ROUGH. SQUALLY SHOWERS.
MODERATE OR GOOD.