Friday, December 3, 2010

Next up: an ATA/IDE Interface

This is the beginning of the ATA/IDE interface board. I borrowed the design from here and had to modify it slightly to work with the bus of the 6809 CPU. I'm still waiting on several of the components and parts so I haven't been able to do much with it yet.

Rather than trying to patch FLEX to use LBA I think I'm just going to stick with CHS sector addressing for now. It will still give me about 16MB of harddisk (or 41 diskettes) so it will be plenty. At least to start with. The CHS method could be done so the drive looks like a really large diskette to FLEX.

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