Hi. If it’s any help, I have an 8050 disk drive. Looking at my photos of it’s insides, it has Micropolis drives (”Micropolis Disk Storage Module Model No. 1006-II”) and the UK3 is 901483-03, dated 5081 (I think, the photo is rather fuzzy). The analog board has voltage regulators on the back corners. I don’t have a dump of the chip, but I could probably do that. How was it done on these RIOT chips again? Can I dump it’s contents over Zoomfloppy, or do I have to use an EPROM reader? — Ville L. > William Levak <wlevak@SDF.ORG> kirjoitti 15.7.2015 kello 17.57: > > > After comparing 8050 6530 images from several sources, I have several discrepancies. > > I have two working drives with 6530 901483-03, date code 1882, with Micropolis mechanisms. The ROM contents are the same as Martin's 901483-02 and zimmers.net DOS 2.5 Tandon. > > Martin has a 901483-03 that is different then my 901483-03 and does not match any other 6530 ROM image. > > At this point, more information is needed to resolve this. > > If you have an 8050 with DOS 2.5, check the 6530 at location UK3. If it is 901483-02 or 901483-03, more information is needed. > > Compare the ROM image with that on zimmers.net. Is it the same or different? What is the date code? What brand of drive mechanism? > > You cannot tell which drive mechanism you have from the front bezel. All but the Micropolis Safari look the same. The analog board on top of drive 0 is different. Tandon drives have two voltage regulators near the center of the board. On all other models, the voltage regulators are on the back corners. > > > wlevak@sdf.lonestar.org > SDF Public Access UNIX System - http://sdf.lonestar.org > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2015-07-15 16:00:44
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