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 Rodr�guez (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
