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Author Topic: High density floppydrive on A2000?  (Read 6356 times)

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Offline mechy

Re: High density floppydrive on A2000?
« on: January 18, 2016, 06:31:09 PM »
Quote from: tonyvdb;802421
Will the Chinon FZ357 work? or must it have the "a" in the model number?

Any amiga HD floppy will work on any amiga with 2.x roms and above.

Some 4000's came with a full height HD floppy,and that will fit the 2000 exactly,with a white face plate though.

3000 drives are usually missing the front bezel.

i thought i was paula also missing the bandwidth to run at high density.

PC HD floppies can be modded as double density,but will not work as high density without some serious mods,and most don't work reliably.

There were some out there form the aftermarket like "The real HD fix" from AMTRADE  i think it was.
 

Offline mechy

Re: High density floppydrive on A2000?
« Reply #1 on: January 18, 2016, 08:27:15 PM »
Quote from: tonyvdb;802423
Ok but the Chinon FZ357A is the model thats in the A4000 I have. The one I found on line is a Chinon FZ357 Missing the "a" in the model number and I found another that was is an FG not FZ

Ok, turns out the FZ357 can be made to work.
http://eab.abime.net/showthread.php?t=9365


it must be the "A".  i tried converting a fz357 but its hopeless as highdensity.
 

Offline mechy

Re: High density floppydrive on A2000?
« Reply #2 on: January 18, 2016, 08:30:53 PM »
Quote from: psxphill;802432
That thread is about using a HD drive with 880k disks, it doesn't do anything for using 1.76mb disks.

AFAIK the A2000 motherboard can only generate the drive ID for a 880k disk, so you need a special drive that can generate either an 880k or 1.76mb ID depending on what disk is in the drive and jumper the A2000 to say the drive is not present (all this does is stop the motherboard generating a conflicting ID). The drive also needs to slow down when you insert a HD floppy of course. This is essentially what an FB357A/FZ357A is, I assume the A means Amiga and without it you can't get HD disks working.

The only other reliable solution were the external laptop drives that Dell offloaded after commodore went bankrupt.

If someone reverse engineered the FB357 and FB357A then it's possible you could figure out how to modify one into the other. It might involve designing a new board which might be a good project for kickstarter.

this is not true, any Amiga from a500 to 4000t with at least 2x rom and paula will work for high density drives including the 2000. my 2000 has HD floppies in it from a 4k. Even the a1000 can use a HD floppy if softkicked to 2x rom + or a rom board is installed with real 2x rom.

The dell drives did work as hd if you want externals, and power computing made a hd drive also,but the power computing one needed drivers,and i find it not utterly reliable-but it may just be the drive i got.
« Last Edit: January 18, 2016, 08:38:18 PM by mechy »