On zimmers.net there are two 8280 300541 files: 300541-001.bin and 300541-revB.bin. If you compare the two files, everywhere they are different, 300541-001.bin is 2 higher than 300541-revB.bin. If you disassemble them, 300541-revB.bin makes sense; 300541-001.bin does not. Therefore: 300541-001.bin is a version of 300541-revB.bin with a bad d1 line. The schematics do not show a GCR ROM. The schematics are available at: www.cbmhardware.de/floppy/cbm8280.php They are very fuzzy and hard to read. I am working on cleaning up a copy. When it is ready, I will send it to zimmers.net. Don't expect much. It was scanned at a very low resolution. wlevak@sdf.lonestar.org SDF Public Access UNIX System - http://sdf.lonestar.org Message was sent through the cbm-hackers mailing listReceived on 2015-07-07 20:00:14
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