Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!udel!gatech!hubcap!hutch%citron.cs.clemson.edu From: hutch%citron.cs.clemson.edu@hubcap.clemson.edu (David Hutchens) Newsgroups: comp.sys.ibm.pc Subject: Need gap lengths for 3.5" diskettes Message-ID: <6637@hubcap.clemson.edu> Date: 29 Sep 89 16:59:21 GMT References: <5498@alvin.mcnc.org> Sender: news@hubcap.clemson.edu Reply-To: hutch%citron.cs.clemson.edu@hubcap.clemson.edu Distribution: usa Lines: 21 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