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Permlink Replies: 78 - Pages: 6 [ 1 2 3 4 5 | Next ] - Last Post: Dec 19, 2013 12:46 PM Last Post By: bigmessowires Threads: [ Previous | Next ]
landonf


Posts: 86
Registered: 7/23/12
mac floppyemu - unreadable disks
Posted: Apr 13, 2013 9:39 PM
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Finally got my http://www.bigmessowires.com/2012/12/15/build-your-own-floppy-emu/ assembled; menu works, but the Mac (IIci and IIx) always report that the disk images are unreadable, and offer to initialize them

Has anyone else (bbraun) you into something like this? Possible I flubbed something, of course, but as far as I know, the only weird thing I did was rebuild the AVR software with the Release configuration after tweaking the LCD initialization values.
landonf


Posts: 86
Registered: 7/23/12
Re: mac floppyemu - unreadable disks
Posted: Apr 20, 2013 8:03 PM   in response to: landonf in response to: landonf
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Solved! (responding to my own post).

I was using the floppyemu as an occasion to get some practice in with the hot air pencil. Upon closer examination, it looks like I applied FAAR too little solder paste on the CPLD and the AVR, and my best guess was an open or intermittent connection.

I just reworked the CPLD and AVR with my soldering iron and plenty of flux, and now the floppyemu works perfectly. Woot.
tt


Posts: 145
Registered: 8/25/12
Re: mac floppyemu - unreadable disks
Posted: Apr 24, 2013 2:03 PM   in response to: landonf in response to: landonf
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Nice, did you buy it as a kit or source the PCB yourself?
bbraun


Posts: 493
Registered: 7/25/12
Re: mac floppyemu - unreadable disks
Posted: Apr 24, 2013 8:19 PM   in response to: tt in response to: tt
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I originally ordered some PCBs and sent them out to a couple interested folks, and I think landonf ordered another batch. The ordering process is suuuper easy from seeed studio and dougg3, landonf, and I made a wiki of the parts necessary, along with links to the digikey parts:
https://mac68k.info/wiki/display/mac68k/Floppy+Emu+Parts
landonf


Posts: 86
Registered: 7/23/12
Re: mac floppyemu - unreadable disks
Posted: Apr 24, 2013 9:21 PM   in response to: bbraun in response to: bbraun
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bbraun wrote:
I originally ordered some PCBs and sent them out to a couple interested folks, and I think landonf ordered another batch. The ordering process is suuuper easy from seeed studio and dougg3, landonf, and I made a wiki of the parts necessary, along with links to the digikey parts:
https://mac68k.info/wiki/display/mac68k/Floppy+Emu+Parts

What he said. I've got a batch of 10 PCBs that should be arriving this week -- I'll have some extras to share (unless I somehow managed to screw up the order).
landonf


Posts: 86
Registered: 7/23/12
Re: mac floppyemu - unreadable disks
Posted: May 6, 2013 6:56 PM   in response to: landonf in response to: landonf
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landonf wrote:
What he said. I've got a batch of 10 PCBs that should be arriving this week -- I'll have some extras to share (unless I somehow managed to screw up the order).

They finally arrived. If anyone wants a PCB or two, just let me know.
tt


Posts: 145
Registered: 8/25/12
Re: mac floppyemu - unreadable disks
Posted: May 7, 2013 3:16 AM   in response to: landonf in response to: landonf
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Cool, I'm interested. = )
landonf


Posts: 86
Registered: 7/23/12
Re: mac floppyemu - unreadable disks
Posted: May 7, 2013 9:32 AM   in response to: tt in response to: tt
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tt wrote:
Cool, I'm interested. = )

Just PM me your address and I'll drop a couple in the mail when I get the chance.
micki001

Posts: 1
Registered: 6/3/13
Re: mac floppyemu - unreadable disks
Posted: Jun 3, 2013 9:58 PM   in response to: landonf in response to: landonf
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Consider me interested too, if there's still time/inventory!

And more to the point, if anyone is willing to construct a FloppyEmu for me I'd be happy to pay a fair price for labor, parts etc.
tt


Posts: 145
Registered: 8/25/12
Re: mac floppyemu - unreadable disks
Posted: Jul 14, 2013 6:24 PM   in response to: landonf in response to: landonf
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Has anyone used a AVRISP mkII clone for programming? Is it not worth getting a clone? Since I am not certain I would use it much, I am thinking of saving some money on this part of the project.
landonf


Posts: 86
Registered: 7/23/12
Re: mac floppyemu - unreadable disks
Posted: Jul 15, 2013 2:10 PM   in response to: tt in response to: tt
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tt wrote:
Has anyone used a AVRISP mkII clone for programming? Is it not worth getting a clone? Since I am not certain I would use it much, I am thinking of saving some money on this part of the project.

I've used one for other projects, though not this project specifically. I can't think of any reason a clone wouldn't work for this.
techknight

Posts: 110
Registered: 10/13/12
Re: mac floppyemu - unreadable disks
Posted: Jul 19, 2013 11:10 PM   in response to: landonf in response to: landonf
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I would get one too, but I am unsure how to program the CPLD. I dont know a thing about them. Nor FPGA for that matter..

Message was edited by: techknight
tt


Posts: 145
Registered: 8/25/12
Re: mac floppyemu - unreadable disks
Posted: Jul 19, 2013 11:29 PM   in response to: techknight in response to: techknight
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Do you mean if you want to tweak the source code?

I wonder if anyone thinks it would be feasible to get it able to support formatting disks and 1.4MB disk images.
tt


Posts: 145
Registered: 8/25/12
Re: mac floppyemu - unreadable disks
Posted: Aug 8, 2013 1:55 AM   in response to: tt in response to: tt
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Would it somehow be possible, to have a software/driver solution, where the floppyemu could pick-up non-standard commands sent to the floppy port so that you could switch disk images or maybe even populate a GUI with a list of all the images available and select the image to open? This way you could mount the floppyemu internally with a bunch of floppy images without having to worry about having access to the buttons to choose the next image. You could also potentially omit some components (like the screen) to make the hardware cheaper. Just a thought...
bbraun


Posts: 493
Registered: 7/25/12
Re: mac floppyemu - unreadable disks
Posted: Aug 9, 2013 2:16 PM   in response to: tt in response to: tt
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I can think of a couple different directions this could go in, although I don't know how practical any of them would be. It's certainly possible, I think the problem is no one is really doing active work on the floppyemu at the moment AFAIK.

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