Building an Apple II from scratch

[great_hierophant@hotmail.com (Great Hierophant)]

Yesterday, I took a look at the circuit diagrams and schematics of an
Apple II found in the Apple II Reference Manual (the Red Book.)  I was
struck with the number of components used, but also with their
commonality.  In an original Apple II, there does not seem to be any
custom chips or devices, unlike the later Apple IIes and IIcs.  Most
of the Apple II/II+ seems composed of standard TTL logic chips.  The
6502 CPU can be found.  The ROM, all 12-16KB of it, can easily fit on
one EPROM.  48KB of DRAM can be done with two chips.   The connectors
are probably standard.  Of course, one does not have to build a power
supply  and can use an Apple II keyboard.  So, has anybody ever
constructed an Apple II mainboard in the way I have described?

GH