On Thu, 23 Jan 2014 01:14:01 +0100, clipka wrote:

>> I got the impression that 64-bit CPUs cut back on some of the really
>> ancient 16-bit stuff. (I don't have an actual site for that though.)
> 
> That might well be. After all, you could emulate them via unknown-opcode
> traps.

I don't know if it's the case or not, but I had a recent discussion with 
someone about supporting NetWare 2.x (don't ask) on modern hardware, and 
the question of whether the A20 line was still supported on modern 
processors came up, because at least 2.15 and earlier require that.

Jim
-- 
"I learned long ago, never to wrestle with a pig. You get dirty, and 
besides, the pig likes it." - George Bernard Shaw

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