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Old 19 January 2017, 13:36   #24
Daedalus
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Join Date: Jun 2009
Location: Dublin, then Glasgow
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So you've decided to finally have a look at the schematics and learn about them, rather than making vague guesses at how Amigas work? Excellent. Bizarre that you're finding all this "evidence" of some weird cover up, it's a strange mindset that finds things like this when there is a much simpler, more obvious answer available.

As was pointed out to you repeatedly in the other thread, there's no way they were intending any other purpose for the RAM expansion headers, other than RAM expansion and a real-time clock. The headers are basically the A1200's equivalent of the A500 and A600 trapdoor slots in a different form factor. The clockport pins are the only ones accessible for GPIO, all the others are simply lines from the chip RAM bus. The guys designing these boards knew what they were doing - if they'd wanted an I/O port for high-speed audio sampling or whatever, they'd have come up with something more suitable... Like Zorro. The A1200's trapdoor slot is the mythical expansion port you seem to be trying and failing to find - it's basically a restricted Zorro slot, so can be used for general expansion. See the unreleased A1200 CD32-compatible drive, Mediator cards, and all the sophisticated accelerators available for examples.

The RAM expansion pins were for RAM expansion. Nothing more, nothing less. As for "buggery", many words have more than one meaning, and it's common enough to refer to something that doesn't work as "buggered". In this case, a bug in a chip buggered up their schematic, requiring extra logic to work around it. Seems more like a little clever wordplay by an engineer, rather than some cryptic message left behind by the Illuminati for you to find.
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