> On 2016-06-04, at 18:50, Gerrit Heitsch <email@example.com> wrote: > > On 06/03/2016 02:10 PM, firstname.lastname@example.org wrote: >> I stumbled recently across a - kind of - interesting drive: >> >> https://www.dropbox.com/sh/92ogkr5v1v0pyg9/AAB0e8hn9oOUgr23EcDuiIbCa >> >> Admittedly I haven't seen one before. The quality of manufacturing is surprisingly good. It reports "CBM DOS V2.6 1541" although as rominfo.silverdr.com says ;-) it surely isn't CBM DOS as found in 1541. > > It might be just a copy... My script says "88.67% copy" so it's quite close but not enough to say that just the copyright texts were changed. > The Oceanic 168 I have use the same ROM as the 1541-II, it just doesn't have a MOS-Logo on it. I use an original 1541-II ROM in one of them now. I'll try that. > The OC168 doesn't use the gate array, it's all TTL, very likely the same circuit or a derivative from the one used on the 1541 with the long board. I am not sure if I have the oldest 1541 in an accessible place but AFAIR it was noticeably more complicated than the board in this "FD5500" drive. I wonder about the analogue circuitry for example. -- SD! Message was sent through the cbm-hackers mailing listReceived on 2016-06-04 22:00:02
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