transwarp error (Disk error 20)

[a600fan]

Hi all,


I got an A500 rev. 5
I load wb 1.3 correctly, I am able to format floppy disks with both wb and x-copy.


I am trying to transfer files via an handmade serial cable (the cable is very long).


On the Amiga side I am using this command:

transwarp -w ser: -b 4800 -d trackdisk 0

On the Linux side I am using cat to send the adf file

I keep getting an error after some tracks are received correctly.

Disk error 20 (track 13, head1, sector 0)

The track number changes randomly.


I tried with different baudrates with no luck.




Thank you

[lesta_smsc]

It is likely the length of cable. You don't actually need a lot of cables for serial transfer as evident from AmigaXfer tool...

[Jpor]

How have you cabled up the Serial cable? Does this program just use Baud Rate? Or does it also rely on Handshaking? DTR etc.. can you set bits etc..?

Also the length of cable will cause degradation in signal. Therefore just using BAUD speed may be the issue.

[a600fan]

I tried shorten the cable with no luck (same error, different track).


I assume the cable is working because I am able to send text to the amiga shell.
I also have transferred transwarp itself with the cable...

[Jpor]

So which pins have you used to make the cable? I take it you’ve crossed pins 5 and 20 for handshaking?
Again does this trans warp program have any other syntax you can use? I.e the ability to use handshaking protocol?
Can’t help if you don’t provide the answers

[a600fan]

This is the wiring I used:





And these are the options of transwarp:

New command line parameters:

-b n: Set the baudrate to n
-1: Single drive mode   For users with only one drive. You are asked to insert the diskette.
-c device: Use this serial device instead of BaudBandit
-r n: Set the serial read buffer to n
-g: Generate CRC-32

[Jpor]

So looking at the pin outs. You have no DTS/DTR handshaking enabled. Have you tried a slower baud rate? Maybe try 1200 instead of 4800.

[a600fan]

Ah! The disk itself was faulty. I checked with the Amiga Test Kit and it had a bad sector.


With perfect floppies it works like a charm.


Now I got a question: is it possible to somehow fix the faulty sectors?


Thank you all

[lesta_smsc]

Originally Posted by a600fan

Ah! The disk itself was faulty. I checked with the Amiga Test Kit and it had a bad sector.


With perfect floppies it works like a charm.


Now I got a question: is it possible to somehow fix the faulty sectors?


Thank you all

Better to avoid trying to fix faulty media. Not worth the headache. I just bought new disks as want peace of mind.

[Jope]

Marking bad sectors doesn't work that well with Amiga floppies, as the Amiga doesn't modify individual sectors like PCs do.

The beginning of the write can be anywhere along the disk's diameter, so the bad sector will be in a different place every time it gets written.

Just copy your data out and get rid of clicking or otherwise faulty disks.