[HN Gopher] Interesting double-poly latches inside AMD's vintage... ___________________________________________________________________ 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! ___________________________________________________________________ (page generated 2023-12-31 23:00 UTC)