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Can I Use a Disk ii on a 512k With a DB19 Adapter? Hear Me Out.
Posted by: jajan547 on 2022-08-23 20:43:08
So I recently had a look at this post on Mac GUI and thought to myself couldn't I use my DB19 adapter that came with my Floppy Emu to make my disk ii work on my 512k? I mean if you look at it Pin one (the arrow) on the ribbon cable and line it up it should theoretically work, right? I have below the pinout for the Macintosh 128k, 512k(e), and Plus (below the photos) I just want to ask before I end up breaking something.

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Screen Shot 2022-08-23 at 10.56.58 PM.png
Posted by: LaPorta on 2022-08-23 20:47:14
DON'T do it! They are not compatible at ALL.
Posted by: jajan547 on 2022-08-23 20:48:14
See this is why we ask, thank you.
Posted by: jajan547 on 2022-08-23 20:50:55
Is there a way maybe it can be hacked to work?
Posted by: bibilit on 2022-08-24 02:16:15
probably not, i don't think the 512 was able to use the Apple II drive at all (thinking about it, the drive was intended to be used in the prototype)

Why are you willing to do so anyway ?
Posted by: Iesca on 2022-08-24 02:43:11
The Mac wouldn't know what to do with it; the Disk II needs the computer to control it since it doesn't have any internal processor of its own. If you need to read 5 1/4 Apple II disks on a Mac, you would likely need a IIe card with the Disk II connected to that, and then run it through the IIe emulation on the Mac.
Posted by: Iesca on 2022-08-24 02:47:40
Prototype Macs were originally designed to use the 5 1/4-inch "Twiggy" drives, like those found in the original Lisa, but they eventually switched to the more reliable, Sony-made 3.5" drives for the final release.
Posted by: Phipli on 2022-08-24 02:51:43
Prototype Macs were originally designed to use the 5 1/4-inch "Twiggy" drives, like those found in the original Lisa, but they eventually switched to the more reliable, Sony-made 3.5" drives for the final release.
And the driver was removed.
Posted by: LaPorta on 2022-08-24 04:24:20
Sorry for the “gloom and doom” response, but I didn’t want you to potentially burn anything out.
Posted by: bibilit on 2022-08-24 05:54:40
Prototype Macs were originally designed to use the 5 1/4-inch "Twiggy" drive

apple.fandom.com

Macintosh prototypes

The first Macintosh computer system had been prototyped at Apple Computer from 1980 to 1983, prior to the release of the Macintosh 128K in January 1984. When Jef Raskin received approval for his proposed Macintosh project in 1979, his former student Bill Atkinson recommended Apple service...
apple.fandom.com apple.fandom.com

Was thinking about this one, the Twiggy idea came after, if you look closely at the Macintosh frame, you can still see an opening in the metal for the release door.
Posted by: jajan547 on 2022-08-24 06:37:19
So hypothetically if one was to make an adapter board to connect to the DB19 with and other DB19 I could then somehow wire in the ROMs? Or PROMs for the disk ii card? I just think there’s got to be a way to get it to work without paying $600 for a iie card.
Posted by: bibilit on 2022-08-24 06:43:00
Posted by: bibilit on 2022-08-24 06:48:57
I just think there’s got to be a way to get it to work without paying $600 for a iie card.

The IIe card is a complete Apple II in a single add-on card, but you will need an appropriate Macintosh to use it (as you will need peripherals to make it work)

The IIe card is a hardware emulation board

But as said previously, the Macintosh is not able to handle Apple II files on its own, nor handle the Apple II drive (and keep in mind that the Apple II also needs another card to handle the drive, the drive is not connected directly to the Apple II)
Posted by: Iesca on 2022-08-24 07:59:31
apple.fandom.com

Macintosh prototypes

The first Macintosh computer system had been prototyped at Apple Computer from 1980 to 1983, prior to the release of the Macintosh 128K in January 1984. When Jef Raskin received approval for his proposed Macintosh project in 1979, his former student Bill Atkinson recommended Apple service...
apple.fandom.com apple.fandom.com

Was thinking about this one, the Twiggy idea came after, if you look closely at the Macintosh frame, you can still see an opening in the metal for the release door.
Oh yes, I have seen that one, you're absolutely right.
Posted by: cheesestraws on 2022-08-24 08:33:10
I could then somehow wire in the ROMs? Or PROMs for the disk ii card?

Different CPU architecture, different OS completely. This isn't going to work.
Posted by: jajan547 on 2022-08-24 13:55:20
Alrighty noted figured it was worth asking was curious.
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