I'm looking for basic information of the MC6843 floppy controller chip. An extensive google search only gave the one answer that I already had: It's a floppy controller chip by Motorola. I also found out that Hitachi made it's own version of it, the 46503.
I'd like to know if the chip is another derivate of the all-time popular NEC765, of which the core is used until today, or if it can do special things with the disk. In other words: What type of encoding did it use (mfm, fm, gcr), sector sizes, bitrates, checksumming and stuff.
Pinout and programming of the chip are NOT of interest. I'm more interested in the way it records data, so I can write a tool that recovers the data with today's equipment.
Thanks for any help, -- Jens Sch�nfeld
-- Author: Jens =?iso-8859-1?Q?Sch=F6nfeld?= INET: [EMAIL PROTECTED]
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