Real Time Clock - Revision history

MacDeath at 21:00, 19 December 2010

2010-12-19T21:00:40Z

2010-09-30T16:36:30Z

‎Notes

2010-09-13T13:35:50Z

2010-09-13T13:34:14Z

‎Datasheets

2010-09-12T23:56:06Z

2010-08-11T20:28:02Z

2010-06-01T17:40:32Z

‎Commercial versions

2010-01-12T19:31:53Z

‎How to build a RTC interface (German)

2010-01-09T02:21:32Z

‎Technical specs

2010-01-09T02:20:32Z

‎Technical specs

← 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]]

@@ Line 48: / Line 48: @@
 == 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]]

← 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.

← 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]]

@@ Line 29: / Line 29: @@
 ..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.
 == How to build a RTC interface (German) ==
@@ Line 49: / Line 41: @@
 File:NoPicture.gif|Schematic (the picture in the scanned article is too small to see anything)
 </gallery>
 [[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]

@@ Line 1: / Line 1: @@
-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 ==

@@ Line 37: / Line 37: @@
 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]]
 * [[SYMBiFACE II]]

@@ Line 50: / Line 50: @@
 Image:rtc s5.jpg|Page 5
 Image:rtc s6.jpg|Page 6
 </gallery>
 [[Category:Hardware]] [[Category:Peripherals]] [[Category:DIY]]

@@ Line 31: / Line 31: @@
 ..1989   Showa 1..64     (reign of japanese emperor Hirohito)
 ..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 ==