Hackers have proved Apple wrong at every turn since the first person piggybacked RAM on the 128k!
NEVER believe such broad stroke, self serving, purposeful misinformation/drivel in the TechNotes or or in the old hardbound Docs! Apple has ALWAYS had a vested interest in hobbling the low and mid-range product line to "Protect High End Sales." They've done so incessantly since the intro of the SE and Mac II waaay back in the day!
I'm almost certain that such NuBus RAM-Disk cards were addressed as VM operating at NuBus Speeds, not HDD speeds of the era. Check out this thread about the same thing, except that for the SE's PDS Slot, the VM addressed memory was accessed at the system RAM speed, much faster than NuBus! [
] ]'>http://68kmla.org/forums/viewtopic.php?f=7&t=12844
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:rambo: 
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