It appears that mine is an original 820. I need to look inside to see if it has the double density upgrade. I may take you up on your offer at some point.
--tom On 8/11/21 9:42 AM, Jonathan Chapman wrote: > There are guides online, the differences are documented, I believe you can > tell from the outside. Bezel color is not always a 100% indicator. > > Floppies are at least easy for them! If no one else can do it, ping me and I > can run off a set. > > Thanks, > Jonathan > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > On Wednesday, August 11th, 2021 at 10:37, Tom Uban via cctalk > <cctalk@classiccmp.org> wrote: > >> I have a Xerox 820. I don't know how to tell if it is a -II or not. It is >> marked as U05-013264 >> >> September 1984. It powers on and boots the monitor. Looking at the PROMs, >> they are labeled: >> >> U33 5.0, U34 5.0, U35 5.0, U36 5.0, U37 4.01, U38 4.01 >> >> At some point, I need to ask someone to make me bootable 8" floppies, but I >> suppose I need to >> >> determine if it is 820 or 820-II first... >> >> At least some of the ROMs appear to be available here (along with other >> info): >> >> http://bitsavers.org/pdf/xerox/820-II/firmware/ >> >> --tom >> >> On 8/11/21 9:04 AM, Mark G Thomas via cctalk wrote: >> >>> Hi, >>> >>> I'm not prepared to lay out $200 for these Xerox ROMs, but if I do manage >>> >>> to get them, I'll read and share them. I did not know there were 5.0 ROMs >>> >>> for the 820-II, but it appears there were, and they are included. >>> >>> https://www.ebay.com/itm/184980603844 >>> >>> >>> Mark
