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eusart_bug [2008/03/06 20:05]
127.0.0.1 external edit
eusart_bug [2008/12/09 21:35]
nebula
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 For detailed infos, how the bug has been found, please read the detailed report at the [[http://​www.ucapps.de|MBHP_USB_PIC]] page. For detailed infos, how the bug has been found, please read the detailed report at the [[http://​www.ucapps.de|MBHP_USB_PIC]] page.
  
-Since there was no adequate software workaround available for this silicon bug, it made the old chip revisions nearly useless for MIDI applications: zero bytes were sporadically inserted into the MIDI Out stream, so that the MIDI protocol was violated. As a hardware workaround for this issue, ​[[iic_modules|MBHP_IIC_MIDI]] module was used with minimal configuration (MIDI Out only).+Since there was no adequate software workaround available for this silicon bug, it made the old chip revisions nearly useless for MIDI applications. As a hardware workaround for this issue, ​the [[MBHP_IIC_MIDI]] module was developed.
  
-Meanwhile the bug has been fixed by Microchip. +Meanwhilethe bug has been fixed by Microchip. 
-All newer chip revisions (produced 2007 and later) are not affected anymore! :-)+**Newer ​chip revisions (produced 2007 and later) are not affected anymore!** :-)
  
 There is a small application available at the [[http://​www.ucapps.de/​mios_download.html|MIOS Download]] page which allows you to determine the revision ID (search for "​revision_id"​) There is a small application available at the [[http://​www.ucapps.de/​mios_download.html|MIOS Download]] page which allows you to determine the revision ID (search for "​revision_id"​)
eusart_bug.txt · Last modified: 2008/12/09 21:35 by nebula