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computers / comp.sys.apple2 / Re: Duodisk card

SubjectAuthor
* Duodisk cardKP
`* Re: Duodisk cardwaynej...@gmail.com
 `* Re: Duodisk cardKP
  `* Re: Duodisk cardKP
   `* Re: Duodisk cardscott
    `* Re: Duodisk cardwaynej...@gmail.com
     `- Re: Duodisk cardAntony Mauget

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Duodisk card

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Subject: Duodisk card
From: kjpm...@gmail.com (KP)
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 by: KP - Wed, 19 Oct 2022 14:23 UTC

Does the Duodisk use a special card? Is it compatible with any other 5.25" floppy controller card?

Re: Duodisk card

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Subject: Re: Duodisk card
From: waynejst...@gmail.com (waynej...@gmail.com)
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 by: waynej...@gmail.com - Wed, 19 Oct 2022 15:28 UTC

The DuoDisk uses a card that looks pretty much the same as the Disk II card with the exception of sporting a db19 connector. It’s the same card that’s used with the daisy-chained 5.25” drives. My earlier production one is labeled I/O Controller while my later one is labeled 5..25 drive controller. Both have the part number 655-0101

Re: Duodisk card

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Subject: Re: Duodisk card
From: kjpm...@gmail.com (KP)
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 by: KP - Thu, 20 Oct 2022 06:47 UTC

Thank you very much; greatly appreciated.

On Wednesday, October 19, 2022 at 11:28:43 AM UTC-4, waynej...@gmail.com wrote:
> The DuoDisk uses a card that looks pretty much the same as the Disk II card with the exception of sporting a db19 connector. It’s the same card that’s used with the daisy-chained 5.25” drives. My earlier production one is labeled I/O Controller while my later one is labeled 5.25 drive controller. Both have the part number 655-0101

Re: Duodisk card

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Subject: Re: Duodisk card
From: kjpm...@gmail.com (KP)
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 by: KP - Thu, 20 Oct 2022 06:51 UTC

By the way, does the DuoDisk work with the IIgs smartport?

On Thursday, October 20, 2022 at 2:47:43 AM UTC-4, KP wrote:
> Thank you very much; greatly appreciated.
> On Wednesday, October 19, 2022 at 11:28:43 AM UTC-4, waynej...@gmail.com wrote:
> > The DuoDisk uses a card that looks pretty much the same as the Disk II card with the exception of sporting a db19 connector. It’s the same card that’s used with the daisy-chained 5.25” drives. My earlier production one is labeled I/O Controller while my later one is labeled 5.25 drive controller. Both have the part number 655-0101

Re: Duodisk card

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Sender: Scott Alfter <salfter@linode.members.linode.com>
From: sco...@alfter.diespammersdie.us
Subject: Re: Duodisk card
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 by: sco...@alfter.diespammersdie.us - Thu, 20 Oct 2022 16:52 UTC

KP <kjpmail@gmail.com> wrote:
> By the way, does the DuoDisk work with the IIgs smartport?

Yes, with some caveats. Mine does, but if I remember right, there were some
things I had to check first to make sure there would be no magic smoke
released on power-up.

This note suggests that the DuoDisk doesn't play well with ROM 3 IIGSes:

https://archive.org/details/IIgs-No_DuoDisk_on_SmartPort/

--
_/_
/ v \ Scott Alfter (remove the obvious to send mail)
(IIGS( https://alfter.us/ Top-posting!
\_^_/ >What's the most annoying thing on Usenet?

Re: Duodisk card

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Subject: Re: Duodisk card
From: waynejst...@gmail.com (waynej...@gmail.com)
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 by: waynej...@gmail.com - Thu, 20 Oct 2022 19:23 UTC

The Duodisk can be used on the IIgs but can cause problems with other daisy-chained drives. Apple recommended a resistor be removed from the DuoDisk before using it on the IIgs

Re: Duodisk card

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From: amau...@macgui.com (Antony Mauget)
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Subject: Re: Duodisk card
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 by: Antony Mauget - Sun, 23 Oct 2022 08:17 UTC

This article
http://mirrors.apple2.org.za/Apple%20II%20Documentation%20Project/Peripherals/Disk%20Drives/Apple%20DuoDisk%205.25/Documentation/Apple%20DuoDisk%20-%20IIGS%20Compatibility.pdf
contains a link to the Apple KB for the Duodisk mod.

--
________________
Antony
Apple II forever

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