Amiga 4000D mobo hard to find?

[FastRobPlus]

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>>But beware of the term 'Flagship Amiga'
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If it was not designed in Los Gatos, and it does not have a keyboard garage, it's not the flagship Amiga.

For reference, here are some other indicators you might not have a flagship Amiga:

- Lack of a WCS

- No power to serial or parallel ports

- Mouse connector not L-shaped

- Not named on the cover of Byte, Creative Computing, COMPUTE!, etc. as "The Amiga Computer"

- No musical tone on system boot

- No Amiga checkmark logo on case

- Monitor design and color scheme does not match the case design and color scheme

- Matching monitor not called "Amiga"

- Case has no designer signatures moulded in the plastic

- No handy 256K expansion socket

[FastRobPlus]

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The only advantage you have over me is that your CIAs are socketed.
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Socketed!?!  You're letting post-Y2K air into the holes!!  You are supposed to epoxy over the CIAs to prevent contamination!

[FastRobPlus]

For what it's worth, I remember reading an interview with some CBM guy when the AA chips were introduced.  When asked why AA could not be retrofitted to older Amigas, he said that the socketed nature of older Amigas meant that they could not reliably operate at the speed of the new chips.