[comp.sys.ibm.pc] Need gap lengths for 3.5" diskettes

hutch%citron.cs.clemson.edu@hubcap.clemson.edu (David Hutchens) (09/29/89)

I am writing a device driver for a 3.5" floppy diskette drive.
I am working with a True Blue PC/AT with the standard controller.
I need to know the proper values to use for gap lengths in
reading/writing and formatting.

Could someone fill in the following table?

	-------------------------------------------------------------------
	|               |  720K in DD drive | 720K in HD drive | 1.44Mb   |
	-------------------------------------------------------------------
	|  format gap   |        ???        |       ???        |   ??     |
	-------------------------------------------------------------------
	|read/write gap |        ???        |       ???        |   ??     |
	-------------------------------------------------------------------

Nobody seems to publish this information.
Any help would be much appreciated.

	David Hutchens
	hutch@hubcap.clemson.edu
	...!gatech!hubcap!hutch