Quote:
Originally Posted by kerravon
It occurred to me that the BIOS could be on the disk as IO.SYS, and after loading itself into memory, it then loads the OS under a fixed name from the same disk. I believe this is what the Raspberry Pi does.
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I realized that this is not going to work. The normal booting from a FAT drive assumes that a BIOS already exists in order to load more sectors from the FAT drive.
So perhaps I want a BIOS loaded from floppy (the same way that the Amiga 1000 loads Kickstart) and then the BIOS loads the first sector from the hard disk and transfers control to it.
I guess it would be helpful to know whether the Atari BIOS allows booting from a FAT hard disk in this manner.
Another possibility would be to have a modified FAT that places the entire BIOS in consecutive sectors and the Amiga 1000 (or some equivalent that can read hard disks) can read that.