4 ms·
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
by johnklos 3y ago
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 :)
- kens 3y agoSorry, I don't know where you would find that information.
- zeremy 3y agoNot sure how much this helps in identifying the actual chips, but, according to these datasheet sources, Revision C is dated June 1990 and Revision D is dated January 1992: https://archive.org/details/bitsavers_amdAm7990A_1770429 https://archive.org/details/bitsavers_amdAm7990A_1770429 (Rev. C) https://www.ardent-tool.com/datasheets/AMD_Am7990.pdf https://www.ardent-tool.com/datasheets/AMD_Am7990.pdf (Rev. D)