I picked up an oceanic 1541 disk drive clone in a recent haul of Commodore stuff. It's actually branded "EXCELERATOR+PLUS", but it's an Oceanic drive. It has a DOS ROM I'm not familiar with, and has the ID string "73,R-DOS 40 TR. 1541,00,00". Some googling has revealed that some people have guessed it as "REX DOS" - but I can find next-to nothing about it. ( I personally doubt it) The drive itself works, and I've dumped the ROM using drvmon. It boots up and works fine under VICE, and it can be found at http://www.digitaltapestries.com/misc/rdos.bin I plan to poke around in it, and see if I can reverse engineer the command strings out of it, but that may take a while. There seems to be a total lack of information about this DOS - in particular I'm curious about the command strings to utilise the 40 track capability hinted in the ID string. Does anyone have any info about this ROM? In an unrelated query - I've been reviving a 1982 KU-14194HB silver-label machine. It's now working fine (RF modulator was dead) but I'd love a schematic for the thing, and I've been unable to locate one. Has anyone seen one? Julian Message was sent through the cbm-hackers mailing listReceived on 2014-10-06 12:00:02
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