Re: Did Commodore cheat with the quad density floppies?

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Wed, 2 Jan 2019 16:06:52 +0100 Message-ID: <91a655ff-d65c-8d6d-f283-1da0d3f33db5@laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 1/2/19 3:34 PM, André Fachat wrote:
> Hi there,
> 
> I was looking at floppy disk recording schemes and I am wondering if the 
> 8050/8250/1001 floppy disk format with over 500kB per side was actually 
> out of spec of even the Quad Density disks?

I always used the normal Double Density disks with my 8050 back then and 
never had any problems.

Does the 5900 bpi number maybe relate to MFM which needs 2 Bits per data 
bit while GCR packs the data tighter with the 10/8 scheme?

  Gerrit