Get Floppy Read/Write heads to strobe disk

By ckrtech

Resident (36)

ckrtech's picture

03-01-2009, 04:49

Hey all -

While I am now convinced that my floppy drive is accepting disks properly (they enter the drive all the way). I have replaced the belt and managed to get the drive to spin up when typing "Call Format" or "Files", I still receive messages like "not ready" and "disk offline" when trying those two commands. (This is Panasonic A1-WSX, btw)

The read/write head only moves just a little bit on boot and perhaps a little bit when I first try to access the drive. I am taking guesses here, but are there any commands I can issue it via BASIC or anything I can do manually to get the drive head to move across the entire disk? This is the only thing I do not see happening after the disk spins up for access. It could be that the drive isn't properly setting the "ready" state, but would the disk still move in that case?

I am not sure if that head can become "parked" somehow or get knocked out of alignment (similar to a C64 1541 drive).

Again - this is just a guess. I am not sure if the heads are supposed to strobe the disk or not. It could be that whatever floppy error is occurring happens before it attempts to access the disk.

Also note that I am using High Density PC disks. I don't think taping the hole up makes a difference, but I tried that as well.

Thanks,
CK

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By PingPong

Prophet (3885)

PingPong's picture

03-01-2009, 10:34

....
The read/write head only moves just a little bit on boot and perhaps a little bit when I first try to access the drive. I am taking guesses here, but are there any commands I can issue it via BASIC

If i remember correctly there are DSKI$ DSKO$ commands in basic. but you need a formatted disk to use them.
they read/write a sector, you specify the sector so you can cause large head movements.