> > On Apr 14, 2016, at 12:05 PM, Josh Dersch <jo...@livingcomputermuseum.org> > wrote: > >> -----Original Message----- >> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Al Kossow >> Sent: Thursday, April 14, 2016 9:58 AM >> To: cctalk@classiccmp.org >> Subject: Re: Xerox Alto on eBay >> >> >> >> On 4/14/16 9:55 AM, Josh Dersch wrote: >>> If anyone out there ends up with a working Alto and needs working media, >> we can help out in that regard (assuming you provide usable packs). >> >> Have you ever gotten a pack from an RK05 to write? >> >> I've tried a couple of times without luck and have wondered if they needed >> to be bulk-erased first. >> > > Yes, I've re-used a handful of 12-sector packs formerly used on a PDP-11 in > an RK05 without any issues. I suppose it might be possible that if the > alignments of the Diablo in the Alto and the RK05 used to write the pack > originally are off by enough that there could be some odd issues (old data > left halfway between the new tracks?) but that's purely speculation on my > part. Bulk erasing certainly couldn't hurt. > > - Josh >
We used to swap packs between Diablo’s and RK05’s all the time. We had third party Qbus controller (18bit!) on an 11/73 and an RK11D on a PDP11/34. Never had an interchange problem. Jerry
