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 listReceived on 2015-07-15 15:00:07
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