PaSha wrote:
Quote from the web page:
"approximately twice as fast as 2HD mode because of the higher rotation speed in 2HD mode. "
The rotation speed is the same in 2DD and 2HD on a normal pc drive (300 rpm). AFAIK The only drives that have different speeds for DD and HD, are Amiga specific HD drives (Chinon FB-357A and FZ-357A). These drives run at half the speed in HD mode (150 rpm, because Paula can't handle more...). This issue is the biggest problem when it comes to converting a PC HD drive to Amiga HD. You will somehow have to make the drive drop to half speed when reading/writing HD disks. Look on aminet for more details, I know there's at least one file detailing these problems.
another quote:
"I think it would be interesting to discuss the possibility of building an adaptor that would fit on the ribbon cable to convert a PC floppy drive into an Amiga floppy drive. I believe that in order to get the adaptor to work on any PC floppy drive would require more expertise than I have and may be cost prohibitive"
Such a device more or less already exists, it's called Kylwalda.
Anyway, thanks for a very informative page. I might be having a look on the pile of old fdd's I've got lying around...
-Paul
After checking the specs on a similar Teac drive, I see that Paul is correct about the rotation speed of the PC floppy drive. The rotation is plainly stated as beeing 300RPM. However, the spec sheet mentions that DD mode transfer speed is 250kbps which is half of that of the HD mode.
Thanx for correcting me Paul.
I would like to get a Teac 235HF-A529 to play with. I think the Teac drives are going to be the best solution. I have learned that the Teac drives are often used in specific hardware applications such as drum machines. These special purpose applications make it impossible to use a plain ole PC floppy drive.
Zip solution is a good idea. I will look into that but it wasn't part of the experiment.
