On Sun, Jan 14, 2018 at 12:41:40PM +0100, Francesco Messineo wrote: >I've got a 1541C :) It looks like the original 1541 but in a white-ish >case. It does seek to track zero every time the connected C64 is >switched on. Is this drive supposed to do that? Yes. I remember when a friend got a disk drive, and it was the 1541C. >Neither the original 1541 nor the 1541-II do that (also it seems it >wants to read something from the disk?). Are you sure that it wants to read from the disk? Does it do anything else than spin the disk and seek to track 1 (and beyond)? Reading from the disk should involve seeking to track 18 to read the directory. As far as I remember, if CLK and DATA are asserted at startup, some versions of the 1541 firmware would execute the &* command, that is, load and execute the first &*,usr file from the disk inside the disk drive. But I thought that this feature was only present in the very first 1540 and 1541 firmware (one that I did not have in my drives). The & command is rather unknown. I remember one utility that would emulate subdirectories by creating &directoryname,usr files that would somehow make the drive think that the directory listing starts from somewhere else than the usual location of track 18 and sector 1. >Is it worth to open J3 that's supposed to make the track-0 sensor work? Unfortunately I do not know the answer to that. Maybe the head-banging could sometimes have a better result than relying on the sensor. >The drive appear to read/write fine other than the strange (to me) >thing at C64 power on. If I remember correctly, it would do the same thing in response to the UI command (not only UJ, which simulates reset). Marko Message was sent through the cbm-hackers mailing listReceived on 2018-01-14 16:00:03
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