Ok, thanks for the input regarding vs Apple vs SCSI Standard. I'll keep it in mind, but I don't think this thread needs to go in that direction. I'm still curious about this...

Of course, to keep things Macintosh, when using the Mac hardware, use the provided drivers, don't dive into programming the SCC chip yourself or whatever.

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I'm not sure I fully understand. What do you mean by "use the provided drivers"? Does this mean, "use the SCSI Manager" or something else? Also, I assumed that I would be making a custom SCC chip, is this ridiculous?

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... My brief look at SCSI makes me think that I should be able to implement it with a microcontroller. Am I way off base? Here are the two 'learning' projects I had in mind...

* Control a bank of LEDs.

* Make a read-only memory device.

Using C and an AVR, is this unrealistic?