On Fri, 26 Jun 1998, Tom Owad wrote:
I belive Apple's Newtons have the OSes in ROM.
They certainly do boot
quickly and a chip swap is need to upgrade the OS.
Later Newts, including the eMate, are flash upgradable. A quick boot
doesn't require a ROM OS, though. Windows is a slow booter even when
ROM'd, but battery-backed RAM gives many portables an instant boot even
with Windows.
Of course, if you have a GRiD Compass with bubble memory, you get an OS
that acts like it's in ROM, but bubbles are writable.
-- Doug