Atari-ST mouse adapter - Revision history

TFM: /* Timings */

2015-10-20T18:59:02Z

‎Timings

TFM: /* Schematic */

2011-11-14T19:10:08Z

‎Schematic

Polluks: /* Schematic */ see below

2011-10-26T11:29:02Z

‎Schematic: see below

TFM: /* Software supporting the ST-Mouse */ expanded & sorted

2011-04-05T00:52:46Z

‎Software supporting the ST-Mouse: expanded & sorted

TFM: /* Software supporting the ST-Mouse */ alphabetically sorted

2011-04-05T00:51:42Z

‎Software supporting the ST-Mouse: alphabetically sorted

MacDeath at 17:10, 19 December 2010

2010-12-19T17:10:24Z

MacDeath at 17:05, 19 December 2010

2010-12-19T17:05:03Z

TFM: /* Timings */ Error corrected

2010-11-01T14:33:52Z

‎Timings: Error corrected

TFM: /* CPC Plus Compatibility */ Errors corrected

2010-11-01T14:31:09Z

‎CPC Plus Compatibility: Errors corrected

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Nocash: /* Timings */

2010-04-04T13:16:55Z

‎Timings

@@ Line 27: / Line 27: @@
 == Timings ==
-The Atari/Amiga mice do output low-level signals, directly coming from the motion sensors. Ideally, software should check the signals ''more than 500 times per second''. Using the CPCs 300Hz interrupt to check the signals might be a bit slow; it would work, but may miss some signals when the mouse is moved too fast.
+The Atari/Amiga mice do output low-level signals, directly coming from the motion sensors. Ideally, software should check the signals ''more than 500 times per second''. FutureOS does that, but not the firmware. Using the CPCs 300Hz interrupt to check the signals might be a bit slow; it would work, but may miss some signals when the mouse is moved too fast.
 Reading the mouse more often than 300 times per second would be better, but it'd require more CPU load since it can't be done via interrupts. Possibly best solution would be combination of IRQ and non-IRQ handling: Always check the mouse on 300Hz interrupts, and - if the program isn't busy with other tasks - additionally check it via polling.

@@ Line 5: / Line 5: @@
 [[File:Atari-ST mouse adapter.gif]]
-The schematic was released in german magazine "Schneider Magazin, 07/1988", apparently using 5 diodes and a 4.5V battery.
+The schematic was released in German magazine "Schneider Magazin, 07/1988", apparently using 5 diodes and a 4.5V battery.
 Aside from Atari-ST mice, the circuit should also work for Amiga mice, which are basically the same, but with XB/YA/YB connected to other pins, which could be resolved at software side (or at hardware side).

@@ Line 7: / Line 7: @@
 The schematic was released in german magazine "Schneider Magazin, 07/1988", apparently using 5 diodes and a 4.5V battery.
-Aside from Atari-ST mice, the circuit should also work for Amiga mice, which are basically the same, but with XA/XB/YA/YB connected to other pins, which could be resolved at software side (or at hardware side).
+Aside from Atari-ST mice, the circuit should also work for Amiga mice, which are basically the same, but with XB/YA/YB connected to other pins, which could be resolved at software side (or at hardware side).
    CPC Joy Port                     Atari-ST Mouse      Amiga Mouse

← Older revision		Revision as of 00:52, 5 April 2011
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	* [[G-Paint]] 2.0 (Günter Radestock)		* [[G-Paint]] 2.0 (Günter Radestock)

−	[[Category:~~Input Device~~]] [[Category:~~Peripherals~~]] [[Category:~~DIY~~]]	+	[[Category:DIY]] [[Category:FutureOS]] [[Category:Input Device]] [[Category:Peripherals]]

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 == Software supporting the ST-Mouse ==
 * [[FutureOS]]
 [[Category:Input Device]] [[Category:Peripherals]] [[Category:DIY]]

← Older revision		Revision as of 17:10, 19 December 2010
Line 49:		Line 49:
	* [[FutureOS]]		* [[FutureOS]]

−	[[Category:Input ~~device~~]] [[Category:Peripherals]] [[Category:DIY]]	+	[[Category:Input Device]] [[Category:Peripherals]] [[Category:DIY]]

← Older revision		Revision as of 17:05, 19 December 2010
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	* [[FutureOS]]		* [[FutureOS]]

−	[[Category:~~Hardware~~]] [[Category:Peripherals]] [[Category:DIY]]	+	[[Category:Input device]] [[Category:Peripherals]] [[Category:DIY]]

@@ Line 23: / Line 23: @@
 === CPC Plus Compatibility ===
-The circuit reportedly doesn't work on CPC Plus computers. Probably simply because of the missing Fire3 signal on the joystick port of the CPC Plus (this could be fixed easily, by connecting the missing pin inside of the computer). There are also additional diodes in the CPC Plus, which may drop the voltages a little, but probably do not cause problems in this case.
+The circuit reportedly doesn't work on CPC Plus computers. There are additional diodes in the CPC Plus which do cause problems in this case.
 == Timings ==