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ElCharro
Account closed
Registered: Dec 2008
Posts: 19 |
Not answering 1570 Floppy Disk Drive
Hello,
I am back since decades on real c64/128 Hardware.
Now I am chekcing out a very clean 128 computer with 1570 drives that do not want even load the "$" directory.
I tried to give the command Initialize typing:
Open 1,8,15,"Initialize" or something like that fully explained in the 1541 Manual bot the Floppy Drives seem to be mooving and flashing lights but at the end of the operation I still cannot load the directory or read files form the disk.
Any Hint?
Thanks a Lot!
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tlr
Registered: Sep 2003
Posts: 1787 |
Are you sure the disk is actually readable?
You could try to format a new one and load the directory from that. |
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ElCharro
Account closed
Registered: Dec 2008
Posts: 19 |
it seems that the FDD doesn't answer to any command. It only flashes in a different way and I am not able to format.
What should I do?
Thanks
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tlr
Registered: Sep 2003
Posts: 1787 |
This is contradictory. You said in your first post that the drive is moving and that you get a flashing light at the end.
For an "I0" (initialize command) this is normal if the disk is not formatted.
What happens when you try to format a disk using the "N0" command?
i.e 'OPEN 15,8,15,"N0:DISK,00"'
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Mace
Registered: May 2002
Posts: 1799 |
Are you using double density floppies?
High density won't work.
Are you sure the head of the drive is clean?
How does the drive respond when turned on, without computer attached? |
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ElCharro
Account closed
Registered: Dec 2008
Posts: 19 |
I would spell out what is happening.
If I type
10 Open 15,8,15
20 Print# 15"Initialize"
30 Close 15
and give RUN the Floppy Disk Drive start spinning for few seconds then the red led start flashing and nothing happens.
If I do the format
Open 15,8,15,"N0:disk,00"
I do have file open error!
If I put another disk ( i.e. with games ) and type:
Load "$",8
I have
Searching for $ .
? File not found error
ready
Any hint please?
Thanks a Lot!
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Devia
Registered: Oct 2004
Posts: 401 |
If it was a 1541 drive, i'd have a closer look at the logic chips... but 1570? I have no idea how this drive is constructed.
Does anyone have a schematic for 1570 ? - I can't seem to find any :(
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Mace
Registered: May 2002
Posts: 1799 |
> 10 Open 15,8,15
> 20 Print# 15"Initialize"
> 30 Close 15
Try changing line 20 in:
20 Print#15,"initialize"
(A comma after 15 and no space after #)
> If I do the format
> Open 15,8,15,"N0:disk,00"
>
> I do have file open error!
That is because you already runned that basic program and the channel is already open.
First do CLOSE 15 and then try OPEN 15,8,15,"N0:disk,00" again.
If a disk is not formatted, loading the directory (LOAD"$",8) won't work.
So far, there's no proof that the drive is broken ;-) |
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MagerValp
Registered: Dec 2001
Posts: 1074 |
Read the drive's error channel so we can see what the actual error message is (not the message printed by basic):
LOAD"$",8
SEARCHING FOR $
?FILE NOT FOUND ERROR
READY.
10 OPEN1,8,15:INPUT#1,A,B$,C,D:CLOSE1:PRINTA;B$;C;D
RUN
21 READ ERROR 18 1 <- What's the error here with a known good disk?
Give us the errors from formatting (N0:) and initializing (I0:) as well. |
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ElCharro
Account closed
Registered: Dec 2008
Posts: 19 |
After the initialize I have
with 10 Open 1,8,15
20 Print#15,"initialize"
30 close 15
I do have
20 Read Error 18 0
So? :(
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tlr
Registered: Sep 2003
Posts: 1787 |
So, either of these:
- the disk is not formatted
- the disk is unreadable
- the drive is broken in some way
Now see what error you get if you try to format a disk.
And like stated above, make sure it's a 48 TPI double density disk. |
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ElCharro
Account closed
Registered: Dec 2008
Posts: 19 |
I am going to check if 1541 Allignment tool is good to give life to my 1541?
Who gave it a try?
I don't know how it work |
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Mace
Registered: May 2002
Posts: 1799 |
I gave it a try, but from al 15 or so drives I tested, none was out of alignment so badly that it didn't work.
Besides, you're not done testing: what is the error when you try to format?
Untill now you only tried initialising, which is not the same as formatting. |
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Jope
Registered: Jul 2004
Posts: 25 |
The 1570 is electrically 99% similar to the 1571, only the second side is missing..
Try it with the mechanism from a working 1541 to rule out alignment problems? |
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Mace
Registered: May 2002
Posts: 1799 |
Jope, we're not even sure if it's the drive that is broken or the floppies he's using. |
