From mboxrd@z Thu Jan 1 00:00:00 1970 From: dave@horsfall.org (Dave Horsfall) Date: Fri, 28 Nov 2014 06:57:59 +1100 (EST) Subject: [TUHS] What's with the DZ-11? In-Reply-To: <20141127145509.5C8F418C0C7@mercury.lcs.mit.edu> References: <20141127145509.5C8F418C0C7@mercury.lcs.mit.edu> Message-ID: On Thu, 27 Nov 2014, Noel Chiappa wrote: > To prevent giving an incorrect impression to those who 'were not there', > each single DZ hex board supported 8 lines (fully independent of any > other cards); the full DH replacement did need two boards, though. And was really really expensive, which is why we had DJ-11s instead, hence our rapture on the coming of the DZ-11. Oh, and I'm a software person, with a good knowledge of hardware (I was forever trying to tell the hardware bods that it was their problem and not mine, and I practically had to rub their noses in it). DEC used to fob us off because we ran Unix; it was only when DECEX became available that the overlapped-seeks issue on the RK-11 was finally acknowledged, as RSX/RSTS didn't use that feature, and MAINDEC didn't prod it. -- Dave Horsfall DTM (VK2KFU) "Bliss is a MacBook with a FreeBSD server." http://www.horsfall.org/spam.html (and check the home page whilst you're there)