help needed on floppy driver

[shahzaad]

hi'
i'm working on OS.we have developed a architecture of new filesystem.now we r working on drivers.but i'm getting lot of trouble on floppy disk driver.especially catching hardware interrupt while recalibrating FDC .i need help in building this driver.
if anyone has build floppy disk driver .please mail me or reply me on this forum.

 

[straiph]

let me find the URL so you can download the datasheet for the 82077AA floppy controller - it explains everything about it - all ports and how to program read/write/verify/format/seek functions etc

its great - just cant seem 2 find it atm

"There are 10 types of people in this world, those who know binary and those who don't!"

 

[shahzaad]

i'll wait for u.but i've quite a bit material on floppy controller. i'm getting problems during implementation.i've been able to controle floppy motor ,reset the controller.but the problem comes when i try to recalibrate the controller.its not firing interrupt.in other words i'm not able to catch interrupt after recalibration.

 

[revanthn]

Hey,

It's good that you are working on a floppy drive controller driver and when you are having trouble implemeting it why don't you take a look at how other hobby OS'es are making it work and make sure you are conformant to drive controller requirements first and then you can fiddle with it.Here's a little something for you, I am working on OS project too,though I am not the lead programmer.

http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/mobius/mn/src/drivers/fdc/

Check that Floppy driver code and I am sure it will help you.BTW the project name is "The Mobius"

revanthn