Data Media Disc System - Revision history

Nocash: /* Reviews */

2010-08-13T23:23:25Z

Reviews

← Older revision		Revision as of 23:23, 13 August 2010
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	This system was reviewed in [[CPCAI]] #9, 1985		This system was reviewed in [[CPCAI]] #9, 1985

	<gallery caption="Review in CPC Schneider International 8-85">		<gallery caption="Review in CPC Schneider International 9-85">
	File:Data Media Review (CPC International 08-85, page 26).jpg\|Review 1/2 (german)		File:Data Media Review (CPC International 08-85, page 26).jpg\|Review 1/2 (german)
	File:Data Media Review (CPC International 08-85, page 27).jpg\|Review 2/2 (german)		File:Data Media Review (CPC International 08-85, page 27).jpg\|Review 2/2 (german)

Nocash: /* Datasheet */

2010-08-13T23:13:56Z

Datasheet

← Older revision		Revision as of 23:13, 13 August 2010
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	== Datasheet ==		== Datasheet ==

	* [[Media:Wd2797 datasheet.pdf\|Datasheet of the disc WD2797 ~~controler~~]]		* [[Media:Wd2797 datasheet.pdf\|Datasheet of the disc WD2797 controller]]

	== Reviews ==		== Reviews ==

Nocash: /* CP/M */

2010-08-13T23:12:27Z

CP/M

← Older revision		Revision as of 23:12, 13 August 2010
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	Whilst being more or less incompatible with 3" CPC disc format, this did at least provide compatibility with 5.25" CP/M discs from other systems.		Whilst being more or less incompatible with 3" CPC disc format, this did at least provide compatibility with 5.25" CP/M discs from other systems.

			Note: According to the adverts, it was only said to be "comaptible" with CP/M (leaving it unclear wheter or not CP/M was included, and it not, how to purchase it).

	== Controller ==		== Controller ==

Nocash: /* Data sheet */

2010-08-07T11:52:15Z

Data sheet

← Older revision		Revision as of 11:52, 7 August 2010
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	Data Media released about 12 games and 24 utilities on 5.25" discs (for a complete list, see the [[Data Media]] page).		Data Media released about 12 games and 24 utilities on 5.25" discs (for a complete list, see the [[Data Media]] page).

	== ~~Data sheet~~ ==		== Datasheet ==

	* [[Media:Wd2797 datasheet.pdf\|Datasheet of the disc WD2797 controler]]		* [[Media:Wd2797 datasheet.pdf\|Datasheet of the disc WD2797 controler]]

Nocash: /* Downloads */

2010-08-07T11:27:10Z

Downloads

← Older revision		Revision as of 11:27, 7 August 2010
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	File:Data Media Advert (CPC International 12-85, page 68).jpg		File:Data Media Advert (CPC International 12-85, page 68).jpg
	</gallery>		</gallery>

			== Manual ==

			* Handbook - none such...?

	== Downloads ==		== Downloads ==

Nocash: /* FDOS */

2010-08-07T11:26:29Z

FDOS

← Older revision		Revision as of 11:26, 7 August 2010
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	\|WRITE Write to Input File		\|WRITE Write to Input File
	\|RUN Load and Start File		\|RUN Load and Start File
	\|MERGE Merge File		\|MERGE Load and Merge File
	\|INIT Format Disc		\|INIT Format Disc

Nocash at 11:23, 7 August 2010

2010-08-07T11:23:56Z

← Older revision		Revision as of 11:23, 7 August 2010
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	[[Image:Datamedia disc system.jpg\|thumb\|250px\|Professional storage media]]		[[Image:Datamedia disc system.jpg\|thumb\|250px\|Professional storage media]]

	An early disc solution for the CPC 464.		An early disc solution for the CPC 464 from german company [[Data Media]]. Available in three versions with two, three, or four 5.25" drives. The capacity per disc is 780Kbytes, the four drive version was announced to store up to 3.2Mb of data. Due to the price and AMSDOS-incompatibility this system lost to another german third-party company of disc systems for the CPC, [[Vortex Computersysteme]].

	~~Manufactured by the German company [[Data Media]].~~		== FDOS ==

	~~Avaliable~~ in ~~two versions with two or four drives~~. ~~The four drive version was able~~ to ~~store up~~ to ~~3.2Mb of data~~.		The disc operating system was called FDOS (non-AMSDOS compatible) and was stored on the controller board in an 8Kb eprom.
			Unlike as under AMSDOS, the cassette commands are hooked (ie. LOAD does access the normal cassette routines). Instead, the disc is accessed via RSX commands (according to the review: \|LOAD "filename" - though that info appears to be incorrect - correct should be \|LOAD,a$ with comma, and for 464 BASIC: with string variable). The supported RSX commands are:

	~~The disc operating system was called FDOS and was stored on the controler board in an 8Kb eprom. Data Media also delivered patches that made the drives availiable under [[~~CP/M~~]].~~		\|MON Monitor/Debugger
			\|CPM Start CP/M (or other boot-able disc)
			\|A,\|B,\|C,\|D Select drive A-D
			\|LOAD Load File
			\|SAVE Save File
			\|DIR Show Directory
			\|ERA Erase File
			\|REN Rename File
			\|OPENIN Open Input File
			\|OPENOUT Open Output File
			\|CLOSE Close Input/Output File
			\|READ Read from Input File
			\|WRITE Write to Input File
			\|RUN Load and Start File
			\|MERGE Merge File
			\|INIT Format Disc

	~~This controler was unlike all later disc controlers for the CPC based on the WD2797 chipset.~~		== Filesystem ==

	As a special ~~feature the controler board had an integrated [[RS232]] interface~~.		FDOS uses a special filesystem with 20 characters per filename, and max 72 files per disc (much different to standard CPC and CP/M filesystems which use 8.3 characters per filename).

	~~Due~~ to the ~~price this~~ system ~~lost~~ to ~~another third part company of~~ disc systems for the ~~CPC,~~ [[~~Vortex Computersysteme~~]]		== CP/M ==

			According to the review, the data media disc system was shipped with [[CP/M]], and included support for confuguring the drive parameters of each drive to work with other CP/M filesystem dialects from other systems.

			Whilst being more or less incompatible with 3" CPC disc format, this did at least provide compatibility with 5.25" CP/M discs from other systems.

			== Controller ==

			The drive unit contains a WD2797 controller chip from Western Digital. That, unlike as all other CPC disc interfaces, which typically contain [[765 FDC\|uPD765]] controller chips.

			== RS232 Interface ==

			As a special feature the controller board had an integrated [[RS232]] interface. This was mentioned as optional feature in the review from 8/1985, it wasn't mentioned at all in the advert from 8/1985, it was mentioned as built-in feature in the advert from 12/1985 (so, it's unclear if all units were delivered with installed RS232 interface).

			== Software ==

			Data Media released about 12 games and 24 utilities on 5.25" discs (for a complete list, see the [[Data Media]] page).

	== Data sheet ==		== Data sheet ==

	[[Media:Wd2797 datasheet.pdf\|Datasheet of the disc controler]]		* [[Media:Wd2797 datasheet.pdf\|Datasheet of the disc WD2797 controler]]

	== Reviews ==		== Reviews ==
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	This system was reviewed in [[CPCAI]] #9, 1985		This system was reviewed in [[CPCAI]] #9, 1985

	<gallery caption="CPC Schneider International 8-85">		<gallery caption="Review in CPC Schneider International 8-85">
	File:Data Media Review (CPC International 08-85, page 26).jpg\|Review 1/2 (german)		File:Data Media Review (CPC International 08-85, page 26).jpg\|Review 1/2 (german)
	File:Data Media Review (CPC International 08-85, page 27).jpg\|Review 2/2 (german)		File:Data Media Review (CPC International 08-85, page 27).jpg\|Review 2/2 (german)
	</gallery>		</gallery>

			== Adverts ==

			<gallery>
			File:Data Media Advert (CPC International 08-85, page 2).jpg
			File:Data Media Advert (CPC International 12-85, page 68).jpg
			</gallery>

			== Downloads ==

			* FDOS rom-image - none such...?
			* 5.25" disc images - none such...?

	== Links ==		== Links ==

	[[Category:Peripherals]][[Category:DATA Storage]]		[[Category:Peripherals]][[Category:DATA Storage]]

Nocash at 09:31, 7 August 2010

2010-08-07T09:31:43Z

← Older revision		Revision as of 09:31, 7 August 2010
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	This system was reviewed in [[CPCAI]] #9, 1985		This system was reviewed in [[CPCAI]] #9, 1985

			<gallery caption="CPC Schneider International 8-85">
			File:Data Media Review (CPC International 08-85, page 26).jpg\|Review 1/2 (german)
			File:Data Media Review (CPC International 08-85, page 27).jpg\|Review 2/2 (german)
			</gallery>

	== Links ==		== Links ==

	[[Category:Peripherals]][[Category:DATA Storage]]		[[Category:Peripherals]][[Category:DATA Storage]]

MacDeath at 19:21, 8 October 2009

2009-10-08T19:21:02Z

← Older revision		Revision as of 19:21, 8 October 2009
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	== Links ==		== Links ==

	[[Category:Peripherals]]		[[Category:Peripherals]][[Category:DATA Storage]]

CPCLER at 07:54, 3 August 2007

2007-08-03T07:54:32Z

← Older revision		Revision as of 07:54, 3 August 2007
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	== Links ==		== Links ==

			[[Category:Peripherals]]