Downgrade Apple //e?

["Bryan Parkoff" <BParkoff@satx.rr.com>]

    I have unenhanced Apple //e that displays "Apple ][" at cold start.  How
do I read "revision A or B" on the motherboard?  How do I downgrade
unenhanced Apple //e that it does not support double resolution?  I mean to
switch from Revision B to Revision A.  Can you explain how the revision B
was fixed to enable double resolution?  Is it because of fixing 80 column?
    Will MouseText be supported on unenhanced Apple //e if Character ROM is
swapped?

    It looks like that Apple II+ does not have double resolution support
because it does not have softswitch for double resolution, but unenhanced
Apple //e does have additional softswitch.  Is it possible to program double
resolution on Apple II+ without needing to use softswitch?  I have 128K and
256K language card.  I believe that it is Saturn.  If it is not possible,
6502 has no way to switch between high and double resolution without using
softswitch.  Is it true that 6502 requires softswitch so 6502 would be able
to manipulate the hardware through softswitch.
    Why is softswitch built?  Why can't 6502 can do without it?

--
Yours Truly,

Bryan Parkoff
BParkoff@satx.rr.com