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Anyone use the 5.25" IB Drive?


8 replies to this topic

#1 Tanrunomad OFFLINE  

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Posted Thu Jun 21, 2012 12:33 PM

It's an external floppy drive. It's supposed to run 5.25" PC software. Anyone use one before? How compatible are they?

Edited by Tanrunomad, Thu Jun 21, 2012 12:34 PM.


#2 DarkLord OFFLINE  

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Posted Thu Jun 21, 2012 2:54 PM

I think most people used those with emulators. For example, the 8bit emulator and PC emulating software.

#3 wood_jl OFFLINE  

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Posted Thu Jun 21, 2012 3:02 PM

I don't think that would read an 8-bit [Atari] disk.


It was just for reading IBM 360K disks with the PC emulators as DarkLord said. The ST Software emulator was called PC-Ditto and was horribly slow. The internal hardware emulator was expensive and featured a complicated, involved installation. There really isn't much use for a 5.25" drive nowdays. The ST isn't going to run PC software natively.

#4 TwiliteZoner OFFLINE  

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Posted Thu Jun 21, 2012 3:54 PM

I had a 5.25 floppy drive albeit a different one than the IB. It sure was nice to have high density 1.2 meg floppies on the ST. Whats funny is to see the 5.25 disks I have with Macintosh software on them.

PC Ditto worked great. It let you go on a 2 week vacation while waiting for Lotus 123 to load.

Edited by TwiliteZoner, Thu Jun 21, 2012 3:55 PM.


#5 rdemming OFFLINE  

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Posted Fri Jun 22, 2012 1:11 AM

Some people used 80 track (720KB) 5.25" floppy's for storing ST software because at that time the disks were cheaper than 3.5" disks. Especially those who were collecting hundreds of cracked games.

Robert

#6 moulinaie OFFLINE  

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Posted Fri Jun 22, 2012 2:05 AM

I don't think that would read an 8-bit [Atari] disk.


It was just for reading IBM 360K disks with the PC emulators as DarkLord said. The ST Software emulator was called PC-Ditto and was horribly slow. The internal hardware emulator was expensive and featured a complicated, involved installation.


There was one solution with no installation and fast: the SuperCharger! It was an external device on the ACSI port with up to 1MB Ram and a fast NecV30 processor.
More informations on my page for example:
(français) http://gtello.pagesp....fr/supch_f.htm
(english) http://gtello.pagesp....fr/supch_e.htm

I used a Cumana 5"1/4 drive with a 40/80 tracks switch.
As it has been said, the 40 tracks (360k) were for PC software and 80 tracks (720k) for cheap backup of some important files.

Guillaume.

#7 DarkLord OFFLINE  

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Posted Fri Jun 22, 2012 6:55 AM

I don't think that would read an 8-bit [Atari] disk.


You are correct. After doing a little (google) research, what I was actually prying up
from the misty depths of my long decaying Atari related memory was this:

http://www.emulators.com/xformer.htm

"In 1988 we designed a special cable to allow ST Xformer users to connect Atari 8-bit disk drives to their Atari ST computers. The same cable, with a minor modification can also be used on your PC for use with PC Xformer. Over the past 11 years thousands of Atari users have built the Xformer cable based on our design described here.

The cable, pictured here, plugs on one end into an Atari 8-bit disk drive such as an 810, 1050, Rana, Indus GT, or XF551, and on the other end plugs into your ST's or PC's printer port. Other Atari SIO devices, such as the color plotter and dot matrix printer are also supported, so go dig them up out of your closets!"

So what I was thinking about was the 8bit native 5.25 drives working with the ST... :)

#8 ParanoidLittleMan OFFLINE  

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Posted Fri Jun 22, 2012 7:44 AM

It's an external floppy drive. It's supposed to run 5.25" PC software. Anyone use one before? How compatible are they?


Well, you can use it to run PC SW on Atari - if have some emulator. But it needs some special settings considering steprate of floppy - usually must set to 12mS.
Simpler is to copy PC SW on 3.5 floppies, I think.
Additional danger is that 5.25 drives have larger load of control lines, what may destroy soundchip in ST(E). Yes, the soundchip, since it's parallel port is used for floppy drive and side selection. Allowed load it only 1mA, what is good for 3.5 drives, but not 5.25 ones.

And I don't see why someone should do it in 2012 ... I remember that bothered with this when PC-Ditto came out. After some struggling 5.25 drive worked with ST, but it required above mentioned measures, including adding amplifiers for floppy control lines.

Edited by ParanoidLittleMan, Fri Jun 22, 2012 7:45 AM.


#9 AtariGeezer OFFLINE  

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Posted Wed Jun 27, 2012 6:39 PM

Besides PC-Ditto, there was a hardware upgrade (AT-Speed or something like that) that included a 286/386 CPU and ran alot faster. I have one installed in a 1040 and used an external 5 1/4 drive for PC progs...

Jay




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