The problem may have been corrected during manufacturing for later runs of the original //c, ie - only units with serial numbers up to a certain point were affected. There were some firmware changes mentioned - $FF didn't support XON/XOFF, etc. $00 does.
You've got me curious now and I'll check my Apple II service manuals when I get home. ----- Original Message ----- From: "Antonio Rodríguez" <[EMAIL PROTECTED]> To: "Apple2list" <[EMAIL PROTECTED]> Sent: Tuesday, May 18, 2004 2:13 PM Subject: Re: What is the official name for the color of a IIc ? > No, I'm sure that I have an original unupgraded //c. Besides the PEEK(64447) > result, which gives 255, I'm the original owner of the machine (my parents > bought it for me twenty years ago), and I can say for sure that it has not been > serviced a single time. > > On the other hand, the tech note you quote doesn't say anything about a bug in > the serial port firmware being corrrected in the 'ID $00' ROM, so this makes me > think that the issue is a hardware one (Howard told a few messages ago that it > was an oscillator crystal, which is probable). Anyway, thanks for the link. > > Greetings, > > Antonio Rodríguez (Grijan) > <ftp://grijan.cjb.net:21000/> > > Sean Fahey ha escrito: > > > I'm pretty sure it was a firmware issue - not in the port hardware itself. > > Your //c may work fine now because it may have been serviced at some point. > > I believe it was a motherboard swap. > > > > Here's a link to technote #7 which describes various issues with ea //c > > revision. > > http://web.pdx.edu/~heiss/technotes/aiic/tn.aiic.7.html > > > > -- > Apple2list is sponsored by <http://lowendmac.com/> and... > > / Buy books, CDs, videos, and more from Amazon.com \ > / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ > > Support Low End Mac <http://lowendmac.com/lists/support.html> > > Apple2list info: <http://lowendmac.com/lists/apple2.html> > --> AOL users, remove "mailto:"; > Send list messages to: <mailto:[EMAIL PROTECTED]> > To unsubscribe, email: <mailto:[EMAIL PROTECTED]> > For digest mode, email: <mailto:[EMAIL PROTECTED]> > Subscription questions: <mailto:[EMAIL PROTECTED]> > Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> > > Using a Mac? Free email & more at Applelinks! http://www.applelinks.com > > -- Apple2list is sponsored by <http://lowendmac.com/> and... / Buy books, CDs, videos, and more from Amazon.com \ / <http://www.amazon.com/exec/obidos/redirect-home/lowendmac> \ Support Low End Mac <http://lowendmac.com/lists/support.html> Apple2list info: <http://lowendmac.com/lists/apple2.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/apple2list%40mail.maclaunch.com/> Using a Mac? Free email & more at Applelinks! http://www.applelinks.com
