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IBM 4869 external floppy

Hi !
I've found a 4869-001 (star), I've tested the floppy in the enclosure and it
works fine.
I connected it to the external interface of a 5150, but I haven't figured
out how to make it work.
ROM bios is dated 10/27/82, and the 4869 driver disk, obviously, isn't
suitable for a 5150.
Someone can help me ?
Thanks



0
SuperVinx
10/3/2007 9:37:55 PM
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SuperVinx wrote:
> I've found a 4869-001 (star), I've tested the floppy in the enclosure and it
> works fine.
> I connected it to the external interface of a 5150, but I haven't figured
> out how to make it work.
> ROM bios is dated 10/27/82, and the 4869 driver disk, obviously, isn't
> suitable for a 5150.

It's not intended to be used with the 5150 floppy controller, it was 
designed to be used on the PS/2 Model 60 and 80 using a "drive sled" and 
a minimal external controller card.  However, I can't say that I ever 
tried it on the 5150, so it might work.  Set the DIP switches on the 
5150 planar to indicate that you have 3 floppy drives, and see if it works.

Rick Ekblaw
0
Rick
10/4/2007 2:55:43 AM
Hmmm !
I forgot the switches ... If you don't tell the Bios ... Bios doesn't know
....
I tried to set the sw for three drives, but no answer ...
So I tried the sw for four drives, and voila' !
The drive responds as drive D (drive C is ... missing !)
So I opened th 4869 case to reach drive sw (19 screws!), I found it set to
DS1 and I set it to DS0, but ...
The drive is selected as drive C, but no motor on signal ... so it didn't
work ...
I tried to change drive but the result is the same ... the problem is the
cable.
It responds well as drive D (DS1), but no motor on as drive C (DS0)
This is a little quirk, but I assigned C=D, not to have ... holes !
But it works well and, with respect to the original FH Sankyo is *faster* !


--

--==oo00O00oo==--
e-mail: supervinxATlibero.it - webmasterATsupervinx.com -
musicATsupervinx.com
Please, substitute '@' for AT !

Concerts page: http://www.supervinx.com/Concerts.html
Main page: www.supervinx.com


0
SuperVinx
10/4/2007 8:36:24 PM
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