From: utzoo!decvax!cca!Michael@sri-unix Newsgroups: net.unix-wizards Title: WARNING: DH/DM Rev E Breaks UNIX Article-I.D.: sri-unix.2338 Posted: Fri Jul 30 04:57:44 1982 Received: Sat Jul 31 02:40:36 1982 Date: 29 Jun 82 1:46:30-EDT (Tue) >From unc!duke!harpo!utah-cs!lepreau Thu Jun 17 17:46:08 1982 Subject: Able DH/DM rev E breaks modem control on 11s Newsgroups: net.periphs Now I hate to say anything bad about Able 'cause they've got such good products and give such great service. They made a slight slip-up here, however. The latest ucode rev (E) of the Able dh/dm breaks Unix modem control on pdp-11 Unibus's. D is fine, as is E on the Vax 750. Evidently they did some diddling to be compatible with the new DEC dmf32 or something like that, which causes the DONE bit to be read-only during a short window, so the driver doesn't always successfully re-enable scan. As for more detail, I don't have Able's letters in front of me, and it was several sleepy nights ago, and who cares we just swapped with a D board. You can still buy D, no problem, and E has nothing necessary. I expect that the driver could be fixed w/o too much trouble. -jay lepreau