Re: Commodore 65 and 1581 incompatibility

From: silverdr_at_wfmh.org.pl
Date: Thu, 19 Nov 2015 20:53:18 +0100
Message-ID: <D8E4F829-6AAC-4FBE-9227-B14F74E4E871@wfmh.org.pl>
You mean the external CDTV drive? I should have a few somewhere. I always thought they differed only with the colour of the casing as any external Amiga drive could be used. I shall find and check one of the black CDTV ones. 

On 19 November 2015 20:40:55 CET, Konrad B <konrad0x42@gmail.com> wrote:
>FB354 in a CDTV drive has 24 pin connector, as well as the
>(unpopulated) 34
>pin one in non standard location.
>
>Regards,
>Konrad
>19 lis 2015 20:28 <silverdr@wfmh.org.pl> napisał(a):
>
>>
>> > On 2015-11-19, at 18:27, Michał Pleban <lists@michau.name> wrote:
>> >
>> > Hello!
>> >
>> > silverdr@wfmh.org.pl wrote:
>> >
>> >>> Hm I understand you mean removing the drive from 1581 and
>transplanting
>> >>> it to the C65?
>> >> Yes, that's what I mean.
>> >
>> > I opened the computer and the drive, but the mechs do not seem
>> > interchangeable. The mech in 1581 is labeled F-354E and the mech in
>C65
>> > is FB-354C. The connector is different, the eject mechanism is also
>> > different.
>>
>> Are you sure the connector is different?! Isn't it a 34 pin Shugart
>type
>> connector?! Obviously I can't now look into my C65 now to verify this
>;-)
>> In 1581 any "Amiga drive" can be used. Definitely the infamous
>FB-354,
>> which I suspected it to be in both cases. Mechanically the Amiga 500
>drives
>> fit. Sometimes the eject button has to be replaced.
>>
>> > Anyway, I reseated the mech connector and the FDC chip, and now I
>can
>> > format disks on the C65 and the 1581 reads them fine. However, the
>drive
>> > in C65 is unreliable, when I insert a disk sometimes it refuses to
>read
>> > it, or it gives weird errors like "disk is write protected". I
>think I
>> > would like to replace it, but where do I get a FB-354C?
>>
>> OK, I found this:
>>
>> http://www.softwolves.com/arkiv/cbm-hackers/16/16508.html
>>
>> So indeed there is a different connector. Yet I would be rather
>surprised
>> if they made a very special drive. My guess is that they combined the
>power
>> with signal lines on one cable but still kept the Shugart interface
>intact.
>> If this is true then you should be able to adapt (including the eject
>> button exchange) any FB-354 as found in A500s
>>
>> --
>> SD!
>>
>>
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>>

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Received on 2015-11-19 20:01:44

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