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On the hardware side, the A500/1000 86-pin edge expansion connectors Config-out signals are grounded, making them auto-config enable signaled to what is connected. The 86-pin CPU slot of the A2000 has it's config input grounded much the same, making it first active, if present, at $E80000, and when done hands it off to the expansion slot logic. The A2000 Rev 6.2 schematics, page 7 (expansion bus), U606 at the top, then have all of the AutoConfig signal In/Out circuitry going through it on each slot's pins 12 and 11 of the various 100-pin expansion slots.
Last edited by thebajaguy; 06 April 2018 at 02:52.
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