Real Time Clock - Revision history

MacDeath at 21:00, 19 December 2010

2010-12-19T21:00:40Z

← Older revision		Revision as of 21:00, 19 December 2010
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	Also in 1986, the same magazine released another RTC ([[Schneiderware Real Time Clock]]) as part of the [[Schneiderware]] series (published in the normal issues, not in the special Sonderheft issues). Both solutions used similar but not identical 4bit RTC chips (the chips have different pin-outs, and some of the 4bit registers aren't exactly the same, for example, the leap-year bits are different).		Also in 1986, the same magazine released another RTC ([[Schneiderware Real Time Clock]]) as part of the [[Schneiderware]] series (published in the normal issues, not in the special Sonderheft issues). Both solutions used similar but not identical 4bit RTC chips (the chips have different pin-outs, and some of the 4bit registers aren't exactly the same, for example, the leap-year bits are different).

	~~[[Category:Hardware]]~~ [[Category:Peripherals]] [[Category:DIY]]		[[Category:Peripherals]] [[Category:DIY]]

Nocash: /* Notes */

2010-09-30T16:36:30Z

Notes

← Older revision		Revision as of 16:36, 30 September 2010
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	== Notes ==		== Notes ==

	Also in 1986, the same magazine released another RTC as part of the [[Schneiderware]] series (published in the normal issues, not in the special Sonderheft issues). Both solutions used similar but not identical 4bit RTC chips (the chips have different pin-outs, and some of the 4bit registers aren't exactly the same, for example, the leap-year bits are different).		Also in 1986, the same magazine released another RTC ([[Schneiderware Real Time Clock]]) as part of the [[Schneiderware]] series (published in the normal issues, not in the special Sonderheft issues). Both solutions used similar but not identical 4bit RTC chips (the chips have different pin-outs, and some of the 4bit registers aren't exactly the same, for example, the leap-year bits are different).

	[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]		[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]

Nocash at 13:35, 13 September 2010

2010-09-13T13:35:50Z

← Older revision		Revision as of 13:35, 13 September 2010
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	This Real Time Clock addon was published as a DIY project in a special edition of ~~the~~ the German magazine: [[CPC Schneider International Sonderheft]] (#3-1986)		This Real Time Clock addon was published as a DIY project in a special edition of the German magazine [[CPC Schneider International Sonderheft]], issue #3-1986.

	Like most other homecomputers of the era, the Amstrad CPC did not include a Real Time Clock. This project overcomes this limitation.		Like most other homecomputers of the era, the Amstrad CPC did not include a Real Time Clock. This project overcomes this limitation.

Nocash: /* Datasheets */

2010-09-13T13:34:14Z

Datasheets

← Older revision		Revision as of 13:34, 13 September 2010
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	* [[Media:RTC-58321-58323 Datasheet.pdf\|RTC-58321 Datasheet (Epson)]]		* [[Media:RTC-58321-58323 Datasheet.pdf\|RTC-58321 Datasheet (Epson)]]

			== Notes ==

			Also in 1986, the same magazine released another RTC as part of the [[Schneiderware]] series (published in the normal issues, not in the special Sonderheft issues). Both solutions used similar but not identical 4bit RTC chips (the chips have different pin-outs, and some of the 4bit registers aren't exactly the same, for example, the leap-year bits are different).

	[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]		[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]

Nocash at 23:56, 12 September 2010

2010-09-12T23:56:06Z

← Older revision		Revision as of 23:56, 12 September 2010
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	1989..today Heisei 1..today (reign of japanese emperor Akihito)		1989..today Heisei 1..today (reign of japanese emperor Akihito)
	Ie. for Gregorian and Heisei calendars set LeapYearOffset=0, for Showa calendar set LeapYearOffset=1 (as described in the CPC magazine). Anyways, the article recommends to use Gregorian calendar, ie. using year=86 for 1986, so, if the battery survived, it wrapped to year=00 in year 2000.		Ie. for Gregorian and Heisei calendars set LeapYearOffset=0, for Showa calendar set LeapYearOffset=1 (as described in the CPC magazine). Anyways, the article recommends to use Gregorian calendar, ie. using year=86 for 1986, so, if the battery survived, it wrapped to year=00 in year 2000.

	~~== Commercial versions ==~~

	~~There are or have been other projects with an own Real Time Clock solution:~~

	* [[Dobbertin Smart Watch]]
	* [[Dk'tronics Real Time Clock]]
	* [[SYMBiFACE II]]

	== How to build a RTC interface (German) ==		== How to build a RTC interface (German) ==
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	File:NoPicture.gif\|Schematic (the picture in the scanned article is too small to see anything)		File:NoPicture.gif\|Schematic (the picture in the scanned article is too small to see anything)
	</gallery>		</gallery>

			== Datasheets ==

			* [[Media:RTC-58321-58323 Datasheet.pdf\|RTC-58321 Datasheet (Epson)]]

	[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]		[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]

Nocash at 20:28, 11 August 2010

2010-08-11T20:28:02Z

← Older revision		Revision as of 20:28, 11 August 2010
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	This Real Time Clock addon was published as a DIY project in a special edition of the the German		This Real Time Clock addon was published as a DIY project in a special edition of the the German magazine: [[CPC Schneider International Sonderheft]] (#3-1986)
	magazine: [[CPC Schneider International]](~~Sonderheft,~~ #3-1986)

	Like most other homecomputers of the era, the Amstrad CPC did not include a Real Time Clock.		Like most other homecomputers of the era, the Amstrad CPC did not include a Real Time Clock. This project overcomes this limitation.

	This project overcomes this limitation.

	== Technical specs ==		== Technical specs ==

TFM: /* Commercial versions */

2010-06-01T17:40:32Z

Commercial versions

← Older revision		Revision as of 17:40, 1 June 2010
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	There are or have been other projects with an own Real Time Clock solution:		There are or have been other projects with an own Real Time Clock solution:

	* [[Dobbertin ~~Real Time Clock~~]]		* [[Dobbertin Smart Watch]]
	* [[Dk'tronics Real Time Clock]]		* [[Dk'tronics Real Time Clock]]
	* [[SYMBiFACE II]]		* [[SYMBiFACE II]]

Nocash: /* How to build a RTC interface (German) */

2010-01-12T19:31:53Z

How to build a RTC interface (German)

← Older revision		Revision as of 19:31, 12 January 2010
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	Image:rtc s5.jpg\|Page 5		Image:rtc s5.jpg\|Page 5
	Image:rtc s6.jpg\|Page 6		Image:rtc s6.jpg\|Page 6
			File:NoPicture.gif\|Schematic (the picture in the scanned article is too small to see anything)
	</gallery>		</gallery>

	[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]		[[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]

Nocash: /* Technical specs */

2010-01-09T02:21:32Z

Technical specs

← Older revision		Revision as of 02:21, 9 January 2010
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	1926..1989 Showa 1..64 (reign of japanese emperor Hirohito)		1926..1989 Showa 1..64 (reign of japanese emperor Hirohito)
	1989..today Heisei 1..today (reign of japanese emperor Akihito)		1989..today Heisei 1..today (reign of japanese emperor Akihito)
	Ie. for Gregorian and Heisei calendars set LeapYearOffset=0, for Showa calendar set LeapYearOffset=1 (as ~~suggested~~ in the CPC magazine). Anyways, the article recommends to use Gregorian calendar, ie. using year=86 for 1986, so, if the battery survived, it wrapped to year=00 in year 2000.		Ie. for Gregorian and Heisei calendars set LeapYearOffset=0, for Showa calendar set LeapYearOffset=1 (as described in the CPC magazine). Anyways, the article recommends to use Gregorian calendar, ie. using year=86 for 1986, so, if the battery survived, it wrapped to year=00 in year 2000.

	== Commercial versions ==		== Commercial versions ==

Nocash: /* Technical specs */

2010-01-09T02:20:32Z

Technical specs

← Older revision		Revision as of 02:20, 9 January 2010
Line 31:		Line 31:
	1926..1989 Showa 1..64 (reign of japanese emperor Hirohito)		1926..1989 Showa 1..64 (reign of japanese emperor Hirohito)
	1989..today Heisei 1..today (reign of japanese emperor Akihito)		1989..today Heisei 1..today (reign of japanese emperor Akihito)
	Ie. for Gregorian and Heisei calendars set LeapYearOffset=0, for Showa calendar set LeapYearOffset=1 (as suggested in the CPC magazine).		Ie. for Gregorian and Heisei calendars set LeapYearOffset=0, for Showa calendar set LeapYearOffset=1 (as suggested in the CPC magazine). Anyways, the article recommends to use Gregorian calendar, ie. using year=86 for 1986, so, if the battery survived, it wrapped to year=00 in year 2000.

	== Commercial versions ==		== Commercial versions ==