klingler@triton.unm.edu (David Klingler) (12/12/90)
Does there exist a floppy controller that will toggle the "reduced write" line (pin 2 on the floppy drive connector) to go from 720k to 1.44m modes instead of relying on the high density notch sensor that is in the drive? I have a Toshiba ND3561 Which can be jumper selected to work this way. This will be for an old "pre 3 1/2 inch compatible" 286 machine that has trouble with this media anyway, so I'm looking for a controller with a built in ROM drivers. If anybody knows of one that can do this, I would like to know where I can buy one.
feg@moss.ATT.COM (Forrest Gehrke,2C-119,7239,ATTBL) (12/12/90)
In article <1990Dec12.063527.26176@ariel.unm.edu> klingler@triton.unm.edu (David Klingler) writes: >Does there exist a floppy controller that will toggle the "reduced write" line >(pin 2 on the floppy drive connector) to go from 720k to 1.44m modes instead >of relying on the high density notch sensor that is in the drive? I have a >Toshiba ND3561 Which can be jumper selected to work this way. This will be >for an old "pre 3 1/2 inch compatible" 286 machine that has trouble with this >media anyway, so I'm looking for a controller with a built in ROM drivers. > All the 3.5" drives I have seen have two rows of pins on the back of the drive for Drive Select and also to turn off the notch sensor. This is jumper selectable, same as Drive Select. Once so jumpered, 720kb and 1.44MB formatting is now software selectable. I understand IBM PS/2 machines are always set up this way, but I have no experience with this. Forrest Gehrke feg@dodger.att.com
davidsen@sixhub.UUCP (Wm E. Davidsen Jr) (12/13/90)
This discussion does not relate to binaries in comp.binaries.ibm.pc.
Please move the discussion to another group where it is appropriate
and will get a better readership.
Suggested groups:
comp.sys.ibm.pc.hardware
comp.os.msdos.misc
comp.os.msdos.apps
comp.os.msdos.programmer
comp.windows.ms
This is not a flame, it is a polite request from the moderator of
c.b.i.p. Let's try to keep c.b.i.p.d on topic.
Thanks.
--
bill davidsen - davidsen@sixhub.uucp (uunet!crdgw1!sixhub!davidsen)
sysop *IX BBS and Public Access UNIX
moderator of comp.binaries.ibm.pc and 80386 mailing list
"Stupidity, like virtue, is its own reward" -me