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Warning: Cannot modify header information - headers already sent in /usr/local/www/mediawiki/includes/WebResponse.php on line 38 http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=C%3ACheck%2FD%3ACheck%2FST-CheckC:Check/D:Check/ST-Check - Revision history2024-12-30T18:17:25ZRevision history for this page on the wikiMediaWiki 1.19.2http://fileformats.archiveteam.org/index.php?title=C:Check/D:Check/ST-Check&diff=49380&oldid=prevParchivist: Created page with "{{FormatInfo |subcat=Error detection and correction |released=1982 }} '''D:CHECK''' (for disk) and '''C:CHECK''' (for cassette tape) by Istvan Mohos and Tom Hudson are type-in..."2024-09-08T06:28:17Z<p>Created page with "{{FormatInfo |subcat=Error detection and correction |released=1982 }} '''D:CHECK''' (for disk) and '''C:CHECK''' (for cassette tape) by Istvan Mohos and Tom Hudson are type-in..."</p>
<p><b>New page</b></p><div>{{FormatInfo<br />
|subcat=Error detection and correction<br />
|released=1982<br />
}}<br />
'''D:CHECK''' (for disk) and '''C:CHECK''' (for cassette tape) by Istvan Mohos and Tom Hudson are type-in checker programs for the Atari used by ANALOG Computing magazine. They were succeeded by [[Unicheck]]<br />
<br />
'''ST-Check''' by Clayton Walnum is direct translation of D:Check II for the 520ST.<br />
<br />
Each character in a line is summed up and undergoes module division leaving a three-digit number that is the checksum. It also includes a group checksum every 15 lines.<br />
<br />
A new algorithm was introduced in D:Check II (Issue 10) to better handle missing lines or lines with the wrong number of characters.<br />
<br />
The codes may be compatible with Antic's [[TYPO (Type Your Program Once)]]<br />
<br />
<br />
== Sample Output ==<br />
[[File:D-CHECK II.jpg]]<br />
<br />
<br />
== Links ==<br />
* [https://archive.org/details/analog-computing-magazine-11/page/n25/mode/2up Typing Guide for special characters]<br />
* [https://archive.org/details/analog-computing-magazine-08/page/n17/mode/2up D:Check] (ANALOG Computing Nov 1982 pg 17)<br />
* [https://archive.org/details/analog-computing-magazine-08/page/n17/mode/2up D:Check II] (ANALOG Computing Mar 1983 pg 26)<br />
* [https://archive.org/details/analog-computing-magazine-08/page/n17/mode/2up C:Check] (ANALOG Computing May 1983 pg 16)<br />
* [https://archive.org/details/analog-computing-magazine-67/page/n41/mode/2up D:CHECK in Action!] (ANALOG Computing Jul 1986 pg 23)<br />
** [https://diskmaster.textfiles.com/browse/26225/86_jul.atr .atr/.act format] ([https://archive.org/details/a8b_analog_86_jul backup])<br />
* [https://archive.org/details/analog-computing-magazine-67/page/n41/mode/2up D:CHECK in Action! (alt copy)] (ANALOG Computing Dec 1988 pg 43)<br />
** [https://diskmaster.textfiles.com/browse/26249/88_dec.atr .atr/.act format] ([https://archive.org/details/a8b_analog_88_dec backup])<br />
* [https://archive.org/details/analog-computing-magazine-41/page/n53/mode/2up ST-Check] (ANALOG Computing/ST Log 41 Apr 1986 pg 53ST)</div>Parchivist