ND floppy disks - Revision history

TArntsen: Format 14b: SINTRAN-III version M formats 80 tracks

2020-01-10T13:59:36Z

Format 14b: SINTRAN-III version M formats 80 tracks

← Older revision		Revision as of 13:59, 10 January 2020
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	\| 17b \|\| Non IBM \|\| 1024 bytes/sector \|\| 8 \|\| 77 \|\| DS/DD \|\| 616		\| 17b \|\| Non IBM \|\| 1024 bytes/sector \|\| 8 \|\| 77 \|\| DS/DD \|\| 616
	\|}		\|}
	''[*]Format 14b allows usage of tracks 78-80 as well, but these tracks must be formatted with the format track function.''		''[*]Format 14b allows usage of tracks 78-80 as well, but these tracks must be formatted with the format track function.''<br>
			''(SINTRAN-III version M formats those tracks together with the rest, however.)'

	'''Additional formats only handled by the 3112 card:'''		'''Additional formats only handled by the 3112 card:'''

TArntsen: 5 1/4" floppies: Sometimes format 0b was used

2019-03-04T15:02:16Z

5 1/4" floppies: Sometimes format 0b was used

← Older revision		Revision as of 15:02, 4 March 2019
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	The floppy controller could use any of its supported formats on any media, 8" or 5 1/4", so it is also possible to have a format 17b 8" floppy disk. This became feasible when media with higher density became available.		The floppy controller could use any of its supported formats on any media, 8" or 5 1/4", so it is also possible to have a format 17b 8" floppy disk. This became feasible when media with higher density became available.

			ND sometimes transferred older 8" images to newer 5 1/4" floppy disks, without re-formatting the filesystem and format to format 17b.
			In this case the 5 1/4" floppy would use format 0b, which also implies FM (not MFM) encoding. This was not common, but these kind of floppies can (presumably) be identified via their PD sheets which will show 148 pages, or the floppy label which may have a label ID ending in -S (for 'single density). They may also have two dates, the older one will be the date of the original 8" image, and the newer will be the date of the transfer to 5 1/4" floppy.

	= Reading a Norsk Data floppy on a Linux computer =		= Reading a Norsk Data floppy on a Linux computer =

TArntsen: 5 1/4" format media clarification

2018-03-20T14:28:41Z

5 1/4" format media clarification

← Older revision		Revision as of 14:28, 20 March 2018
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	The 8" Norsk Data format 0b was 512 bytes/sector, single sided/single density, 8 sectors per track, 77 tracks. The total capacity was 154 pages of 2048 bytes per page. Of this 148 pages could be allocated for files.		The 8" Norsk Data format 0b was 512 bytes/sector, single sided/single density, 8 sectors per track, 77 tracks. The total capacity was 154 pages of 2048 bytes per page. Of this 148 pages could be allocated for files.
	=== 5 1/4" format ===		=== 5 1/4" format ===
	The 5 1/4" Norsk Data format 17b was 1024 bytes/sector, double sided/double density, 8 sectors per track, 77 tracks per side. The total capacity was 616 pages. Of this 612 pages could be allocated for files.		The 5 1/4" Norsk Data format 17b was 1024 bytes/sector, double sided/double density, 8 sectors per track, 77 tracks per side. The total capacity was 616 pages. Of this 612 pages could be allocated for files. Note that "double density" is actually so-called "1.2MB high density" format in PC terminology, sometimes called "DS/HD" or "MF2-HD". The 5 1/4" media is typically labelled "DS,HD 96TPI".

	The floppy controller could use any of its supported formats on any media, 8" or 5 1/4", so it is also possible to have a format 17b 8" floppy disk. This became feasible when media with higher density became available.		The floppy controller could use any of its supported formats on any media, 8" or 5 1/4", so it is also possible to have a format 17b 8" floppy disk. This became feasible when media with higher density became available.

TArntsen: Formats: 14b supports four additional tracks, with a little help

2017-04-21T11:43:41Z

Formats: 14b supports four additional tracks, with a little help

← Older revision		Revision as of 11:43, 21 April 2017
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	\| 13b \|\| Non IBM \|\| 1024 bytes/sector \|\| 8 \|\| 77 \|\| SS/DD \|\| 308		\| 13b \|\| Non IBM \|\| 1024 bytes/sector \|\| 8 \|\| 77 \|\| SS/DD \|\| 308
	\|-		\|-
	\| 14b \|\| Non IBM \|\| 512 bytes/sector \|\| 15 \|\| 77 \|\| DS/DD \|\| 577		\| 14b \|\| Non IBM \|\| 512 bytes/sector \|\| 15 \|\| 77 (''80''<sup>*</sup>) \|\| DS/DD \|\| 577
	\|-		\|-
	\| 15b \|\| IBM SYS-34 \|\| 256 bytes/sector\|\| 26 \|\| 77 \|\| DS/DD \|\| 500		\| 15b \|\| IBM SYS-34 \|\| 256 bytes/sector\|\| 26 \|\| 77 \|\| DS/DD \|\| 500
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	\| 17b \|\| Non IBM \|\| 1024 bytes/sector \|\| 8 \|\| 77 \|\| DS/DD \|\| 616		\| 17b \|\| Non IBM \|\| 1024 bytes/sector \|\| 8 \|\| 77 \|\| DS/DD \|\| 616
	\|}		\|}
			''[*]Format 14b allows usage of tracks 78-80 as well, but these tracks must be formatted with the format track function.''

	'''Additional formats only handled by the 3112 card:'''		'''Additional formats only handled by the 3112 card:'''
	{\| class="wikitable"		{\| class="wikitable"

TArntsen: Formats supported by the old PIO controller

2017-04-21T11:30:01Z

Formats supported by the old PIO controller

← Older revision		Revision as of 11:30, 21 April 2017
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	==Formats supported by the [[3027]] floppy controller, [[3106]] and [[3112]] floppy/streamer controllers:==		==Formats supported by the [[3027]] floppy controller, [[3106]] and [[3112]] floppy/streamer controllers:==
			(The old PIO floppy disk controller supports only formats 0b, 1b, 2b)
	{\| class="wikitable"		{\| class="wikitable"
	\|-		\|-

Tingo: added Glossary category

2014-07-23T21:39:28Z

added Glossary category

← Older revision		Revision as of 21:39, 23 July 2014
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	*{{ND-doc\|11.021}}		*{{ND-doc\|11.021}}
	*{{ND-doc\|860128\|Ref. DEVICE-FUNCTION SET-FLOPPY-FORMAT}}		*{{ND-doc\|860128\|Ref. DEVICE-FUNCTION SET-FLOPPY-FORMAT}}
			[[Category:Glossary]]

TArntsen: Typo.

2011-05-17T17:52:29Z

Typo.

← Older revision		Revision as of 17:52, 17 May 2011
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	If you forget the 'setfdprm' the drive may get into a read-error cyclic problem. If so, then insert the following command (once) before continuing with fdrawcmd, setfdprm:		If you forget the 'setfdprm' the drive may get into a read-error cyclic problem. If so, then insert the following command (once) before continuing with fdrawcmd, setfdprm:
	floppycontrol --resetnow 2		floppycontrol --resetnow 2
	The above command, followed by the fdrawcmd recalibrate 0 command, will perform a full reset of the drive and 'setfdprm' should work ~~afterwords~~. NB: Keep the floppy in the drive when executing these commands.		The above command, followed by the fdrawcmd recalibrate 0 command, will perform a full reset of the drive and 'setfdprm' should work afterwards. NB: Keep the floppy in the drive when executing these commands.

	The format of the image data will normally be either a standard Sintran file system, or a backup volume. The Sintran file system is documented in {{ND-doc\|30.003}}.		The format of the image data will normally be either a standard Sintran file system, or a backup volume. The Sintran file system is documented in {{ND-doc\|30.003}}.

TArntsen: Added some problem handling tips for reading floppies

2011-05-17T17:51:20Z

Added some problem handling tips for reading floppies

← Older revision		Revision as of 17:51, 17 May 2011
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	* The '''setfdprm''' command must be repeated whenever a new floppy disk is inserted.		* The '''setfdprm''' command must be repeated whenever a new floppy disk is inserted.
	* The floppy content will be found in the ''file.image'' file, or whatever output file defined by the ''of='' parameter to the ''dd'' command.		* The floppy content will be found in the ''file.image'' file, or whatever output file defined by the ''of='' parameter to the ''dd'' command.

			If the above fails: Use this sequence instead of the single setfdprm command:
			fdrawcmd recalibrate 0
			setfdprm /dev/fd0 sect=8 hd ssize=1024 cyl=77
			Do this for every new floppy.
			If you forget the 'setfdprm' the drive may get into a read-error cyclic problem. If so, then insert the following command (once) before continuing with fdrawcmd, setfdprm:
			floppycontrol --resetnow 2
			The above command, followed by the fdrawcmd recalibrate 0 command, will perform a full reset of the drive and 'setfdprm' should work afterwords. NB: Keep the floppy in the drive when executing these commands.

	The format of the image data will normally be either a standard Sintran file system, or a backup volume. The Sintran file system is documented in {{ND-doc\|30.003}}.		The format of the image data will normally be either a standard Sintran file system, or a backup volume. The Sintran file system is documented in {{ND-doc\|30.003}}.

TArntsen: Change PC/AT reference to more stable Wikipedia ref

2011-04-08T18:57:54Z

Change PC/AT reference to more stable Wikipedia ref

← Older revision		Revision as of 18:57, 8 April 2011
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	\| 23b - 33b \|\| - \|\| \|\| \|\| \|\| \|\|		\| 23b - 33b \|\| - \|\| \|\| \|\| \|\| \|\|
	\|-		\|-
	\| 34b \|\| IBM PC<ref>~~http~~:/~~/www.reference.com/browse/IBM+PC+~~AT</ref> \|\| 512 bytes/sector \|\| 15 \|\| 80 \|\| DS/DD \|\| 600		\| 34b \|\| IBM PC<ref>[[Wikipedia:IBM_Personal_Computer/AT]]</ref> \|\| 512 bytes/sector \|\| 15 \|\| 80 \|\| DS/DD \|\| 600
	\|-		\|-
	\| 35b - 57b \|\| - \|\| \|\| \|\| \|\| \|\|		\| 35b - 57b \|\| - \|\| \|\| \|\| \|\| \|\|

Mike: Perhaps more pritty?

2010-07-15T22:08:58Z

Perhaps more pritty?

← Older revision		Revision as of 22:08, 15 July 2010
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	= References =		= References =
	<references/>		<references/>
	{{ND-doc\|30.003}}~~<br/>~~		*{{ND-doc\|30.003}}
	{{ND-doc\|11.015}}~~<br/>~~		*{{ND-doc\|11.015}}
	{{ND-doc\|11.021}}~~<br>~~		*{{ND-doc\|11.021}}
	{{ND-doc\|860128\|Ref. DEVICE-FUNCTION SET-FLOPPY-FORMAT}}		*{{ND-doc\|860128\|Ref. DEVICE-FUNCTION SET-FLOPPY-FORMAT}}