[HN Gopher] Interesting double-poly latches inside AMD's vintage...
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       Interesting double-poly latches inside AMD's vintage LANCE Ethernet
       chip
        
       Author : elpocko
       Score  : 84 points
       Date   : 2023-12-31 18:20 UTC (4 hours ago)
        
 (HTM) web link (www.righto.com)
 (TXT) w3m dump (www.righto.com)
        
       | kens wrote:
       | Author here for any questions :-) This is a change of pace from
       | my x86 stuff, just a quick look at a 1982 Ethernet chip that
       | unexpectedly used a second layer of polysilicon for resistors.
        
         | Genbox wrote:
         | Great article Ken. I love the chip/die pictures.
        
         | johnklos wrote:
         | The Commodore A2065 ethernet card uses the Am7990, and I'm
         | still using several of them in various Amiga systems, running
         | both AmigaDOS and NetBSD.
         | 
         | While trying to figure out some occasional network stalls, I
         | looked at NetBSD's man le(4) page, which had an interesting
         | note:
         | 
         | Alas, the Am7990 chip is so old that AMD has "de-archived" the
         | production information about it; pending a search elsewhere, we
         | don't know how to identify the revision C chip from the date
         | codes.
         | 
         | Any chance this information is publicly available elsewhere?
         | 
         | Always fascinating writeups, Ken! Thanks :)
        
         | virgulino wrote:
         | Happy New Year, Master Ken! Thank you for all the gifts you've
         | given us this year, even on the last day! Cheers, from an
         | island Brazil!
        
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       (page generated 2023-12-31 23:00 UTC)