Re: 1541C reset behaviour

From: Francesco Messineo <francesco.messineo_at_gmail.com>
Date: Sun, 14 Jan 2018 20:37:38 +0100
Message-ID: <CAESs-_yhBBgN3dPorGo+JusRgcWY+eooTdp_ODkSA3ThaVC27w@mail.gmail.com>
On Sun, Jan 14, 2018 at 8:22 PM, Hegedűs István <hegedusis@t-online.hu> wrote:
> one more thing. I have tried to open J3 in one of my drives but it did not
> help. Maybe the sensor doesn't work in it.

the code to make the sensor work is only in the -01 and -02 firmare.
It's not present on the -03 (1541-II one).
I'm not upgrading to -03 because I wanted to understand if that sensor
could be a good thing to enable.
In my opinion, 1571 drives look very quiet in operation since they
don't have to "bang" the head.
If the sensor in the 1541C is better left disabled, I'll be upgrading
to -03 too.

> Istvan
>
> -----Original Message----- From: Francesco Messineo
> Sent: Sunday, January 14, 2018 12:41 PM
> To: cbm-hackers@musoftware.de
> Subject: 1541C reset behaviour
>
> Hi all,
> 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? Neither the original 1541 nor
> the 1541-II do that (also it seems it wants to read something from the
> disk?).
> I've upgraded the firmware from 251968-01 to -02 since the original
> one was not compatible with some demo fast-loading code (like lunatico
> from LFT).
> Is it worth to open J3 that's supposed to make the track-0 sensor work?
> The drive appear to read/write fine other than the strange (to me)
> thing at C64 power on.
> Thanks
> Frank
>
>
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>
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Received on 2018-01-14 20:02:05

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