Subject: 720K floppy params?
To: None <>
From: Bill Sommerfeld <>
List: current-users
Date: 12/12/1993 11:34:00
I occasionally need to read 720K dos floppies.

The -current driver (sys/arch/i386/isa/fd.c) sez:

! 	{ 9,2,0xFF,0x2A,80,1440,1,0 },	/* 720K drive. PROBABLY WRONG	*/

.. and it is, because 720K floppies are double sided.

Anyone have the right collection of "magic numbers"?  (yes, I know the
driver doesn't auto-detect the density; this can be *patched* around).

The ones I can't derive from a description of the drive info are the
"datalen", "gap", and "transfer speed code".

Thanks in advance..

				- Bill