Drive Select Swap Mod - Revision history

>Catmando: /* The DS0/DS1 signal mod inside the ST - without pin bending */

2016-02-23T11:01:53Z

The DS0/DS1 signal mod inside the ST - without pin bending

← Older revision		Revision as of 07:01, 23 February 2016
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	My YM chip was not socketed and I dislike the idea of bending pins. So here's a version of the mod that doesn't need it :		My YM chip was not socketed and I dislike the idea of bending pins. So here's a version of the mod that doesn't need it :
	* Open your STe and ~~locale~~ W301		* Open your STe and locate W301
	* pins 2 and 3 of W301 are linked together by a small track on the PCB. Cut this one (carefully).		* pins 2 and 3 of W301 are linked together by a small track on the PCB. Cut this one (carefully).
	* Cut wire 10 on the internal floppy cable, close to the motherboard side.		* Cut wire 10 on the internal floppy cable, close to the motherboard side.

2016-02-23T10:59:32Z

← Older revision		Revision as of 06:59, 23 February 2016
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	The Atari ST in unable to boot from an external floppy drive. Once implemented, this modification will provide a switch that swaps the drive select signals allowing the ablilty to toggle Drive A between the internal and external unit.		The Atari ST is unable to boot from an external floppy drive. Once implemented, this modification will provide a switch that swaps the drive select signals allowing the ablilty to toggle Drive A between the internal and external unit.

	This is particularly useful if you have invested in a HxC floppy emulator and you would like the ability to have it externally connected to you ST and optionally boot from it.		This is particularly useful if you have invested in a HxC floppy emulator and you would like the ability to have it externally connected to you ST and optionally boot from it.

2012-04-21T13:21:12Z

The DS0/DS1 signal mod inside the ST: Added a variant without pin bending.

← Older revision		Revision as of 09:21, 21 April 2012
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	[[File:DS0-DS1_mod_complete.jpg]]		[[File:DS0-DS1_mod_complete.jpg]]


			== The DS0/DS1 signal mod inside the ST - without pin bending ==

			My YM chip was not socketed and I dislike the idea of bending pins. So here's a version of the mod that doesn't need it :
			* Open your STe and locale W301
			* pins 2 and 3 of W301 are linked together by a small track on the PCB. Cut this one (carefully).
			* Cut wire 10 on the internal floppy cable, close to the motherboard side.

			Now wire the switch as follows :

			W301.1 ---- 1[ ]4 ---- W301.3
			W301.2 ---- 2[ ]5 ---- > to floppy drive pin 10
			W301.3 ---- 3[ ]6 ---- W301.1

			The result is the same, and it is a bit easier to do.

			== Additional information ==

			For reference, the wiring of W301 is (as found in Atari STe schematics, page 3) :
			* pin 1 : DS0
			* pin 2 : to external floppy drive select
			* pin 3 : DS1

			As you can see, the switch will be connecting either DS0 to internal drive and DS1 to external (as usual),
			or DS1 to internal and DS0 to external.
	Proceed to [[Connecting an HxC Floppy Emulator to an ST]]		Proceed to [[Connecting an HxC Floppy Emulator to an ST]]

2012-02-19T03:19:52Z

← Older revision		Revision as of 23:19, 18 February 2012
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	Proceed to [[Connecting an HxC Floppy Emulator to an ST]]		Proceed to [[Connecting an HxC Floppy Emulator to an ST]]

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2011-10-10T15:31:01Z

← Older revision		Revision as of 11:31, 10 October 2011
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	~~[[Category:Hardware Components]]~~[[Category:Hardware DIY]]		[[Category:Hardware DIY]]

2011-10-10T15:25:26Z

← Older revision		Revision as of 11:25, 10 October 2011
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	Back to [[DIY Hardware or %22mods%22]]		Back to [[DIY Hardware or %22mods%22]]
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2011-08-28T09:59:20Z

← Older revision		Revision as of 05:59, 28 August 2011
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	Proceed to [[Connecting an HxC Floppy Emulator to an ST]]		Proceed to [[Connecting an HxC Floppy Emulator to an ST]]

	Back to [[~~DIY_Hardware~~ or %22mods%22]]		Back to [[DIY Hardware or %22mods%22]]

2011-08-28T09:57:53Z

← Older revision		Revision as of 05:57, 28 August 2011
Line 91:		Line 91:

	Proceed to [[Connecting an HxC Floppy Emulator to an ST]]		Proceed to [[Connecting an HxC Floppy Emulator to an ST]]

	Back to [[DIY_Hardware or %22mods%22]]		Back to [[DIY_Hardware or %22mods%22]]

2011-08-28T09:57:12Z

← Older revision		Revision as of 05:57, 28 August 2011
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	[[File:DS0-DS1_mod_complete.jpg]]		[[File:DS0-DS1_mod_complete.jpg]]

	Proceed to [[Connecting An HxC Floppy Emulator ~~To An~~ ST]]		Proceed to [[Connecting an HxC Floppy Emulator to an ST]]
	Back to [[DIY_Hardware or %22mods%22]]		Back to [[DIY_Hardware or %22mods%22]]

2011-08-28T09:56:39Z

← Older revision		Revision as of 05:56, 28 August 2011
Line 90:		Line 90:
	[[File:DS0-DS1_mod_complete.jpg]]		[[File:DS0-DS1_mod_complete.jpg]]

	Proceed to [[Connecting An HxC To An ST]]		Proceed to [[Connecting An HxC Floppy Emulator To An ST]]
	Back to [[DIY_Hardware or %22mods%22]]		Back to [[DIY_Hardware or %22mods%22]]