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From: dolson@hppad.HP.COM (David Dolson)
Newsgroups: comp.sys.amiga.hardware
Subject: EXPANSION SLOTS & Memory mapping
Message-ID: <70001@hppad.HP.COM>
Date: 29 Nov 90 22:43:48 GMT
Organization: HP Panacom Automation Div Waterloo, Ont.
Lines: 26

Hi,

Any experience with Amiga EXPANSION SLOTS ????

I'm considering experimenting with a peripheral card to make use
of the main expansion slot in my stock A500.  This is so far just
for experimentation - relays, A/D convertors, etc.

I have most of the info I need:  Slot pinout, and 68000 bus
specifications.  I haven't considered detail timing considerations,
but basic 74LSxx or 74HCxx address decoding should be fast enough for
the 7 MHz bus cycle.

Questions:

1. I want to memory-map the devices.  WHERE in memory should I put it?
   I've heard that expansion cards are supposed to be auto-configurable,
   but didn't get any explanation for what that meant.

2. Are there any PITFALLS I should know about, or is making the card
   as easy as it looks?  (e.g. are the 68000 specs valid for this slot?)

Thanks,

David Dolson
dolson@hppadi.waterloo.hp.com