On 06/06/2012 07:09 PM, Bil Herd wrote: > Yes especially the quick dying ones that only lasted between 1-6 months. > You could see the corrosion creeping across the die under a microscope , > "purple creeping crud" we called it. There was a point probably late 84 > early 85 where the passivation problem was fixed. Hm... might that at least partially explain the 'unstable' CPU and TED for the 264? Those were smaller (HMOS-I and HMOS-II), among the first chips using that process and they were known to die quickly, at least the 84 datecodes... Gerrit > > -----Original Message----- > From: firstname.lastname@example.org > [mailto:email@example.com] On Behalf Of Gerrit Heitsch > Sent: Wednesday, June 06, 2012 11:48 AM > To: firstname.lastname@example.org > Subject: Re: Commodore PLA equations (complete) > > On 06/06/2012 06:12 AM, Bil Herd wrote: >> Layer 7 was the passivation which we sucked at for quite a while. > > Would that explain why the PLA and some other chips made by MOS tended to > die after a while? > > Gerrit > > > > Message was sent through the cbm-hackers mailing list > > Message was sent through the cbm-hackers mailing list > > Message was sent through the cbm-hackers mailing listReceived on 2012-06-06 18:00:31
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