• Please review our updated Terms and Rules here

Cbm dual drive 3040 disk - two red lights

OK, so the signals are probably pretty static and not doing much then.

Either we have some internal drive IC faults that are not being detected by the simple nature of the power-on tests or something is not 100% with the PET or the IEEE488 interface.

I see a couple of options:

1. Swap a few of the 6522 and 6530 devices within the disk drive for known good ones.

2. You purchase something like the SD2PET and get this working with your PET. We then know for an absolute fact that the PET is working.

3. There is a more extensive diagnostic program available to test the disk drive out. You could try and download this and run it against your disk drive. Hopefully, this will be able to pinpoint more accurately what is wrong.

I think I have exhausted my knowledge at the moment - so short of writing some diagnostic firmware to run on the disk drive - I think we need to consider what options are open to us from here. I have the odd idea of checking some of the signals driving the drive select and motor ON signals to see if the logic board is commanding the disk drives to do something - but that is not being passed on by the analogue board within the disk unit.

Dave
 
daver2 said:
OK, so the signals are probably pretty static and not doing much then.

Either we have some internal drive IC faults that are not being detected by the simple nature of the power-on tests or something is not 100% with the PET or the IEEE488 interface.

I see a couple of options:

1. Swap a few of the 6522 and 6530 devices within the disk drive for known good ones.

2. You purchase something like the SD2PET and get this working with your PET. We then know for an absolute fact that the PET is working.

3. There is a more extensive diagnostic program available to test the disk drive out. You could try and download this and run it against your disk drive. Hopefully, this will be able to pinpoint more accurately what is wrong.

I think I have exhausted my knowledge at the moment - so short of writing some diagnostic firmware to run on the disk drive - I think we need to consider what options are open to us from here. I have the odd idea of checking some of the signals driving the drive select and motor ON signals to see if the logic board is commanding the disk drives to do something - but that is not being passed on by the analogue board within the disk unit.

Dave
Click to expand...
Dave!!!
I am desperate, i removed RRIOT replacement to see 6522 and i saw that it was mounted in the wrong direction!!! :(
Now i inserted correct, can i try now if works??
 
>>> I am desperate, i removed RRIOT replacement to see 6522 and i saw that it was mounted in the wrong direction!!!

Oh dear... Rookie error I am afraid.

Yes, please try it, but it might be toast...

Dave
 
daver2 said:
>>> I am desperate, i removed RRIOT replacement to see 6522 and i saw that it was mounted in the wrong direction!!!

Oh dear... Rookie error I am afraid.

Yes, please try it, but it might be toast...

Dave
Click to expand...
Need i write load "$", 8 ?
 
I typed LOAD"$",8 and now finally i can hear drive spinning...unfortunately on screen i see always "SEARCHING FOR $" and "LOADING" but nothing happens...i can see central led on... :(
 
So, when did the 6522 got installed the wrong way round?

It is possible that without anything on the disk in the first place, the LOAD will hang.

When does the drive start spinning and the central LED come on?

Doesn't either of the drive select LEDs come on?

Dave
 
daver2 said:
When does the drive start spinning and the central LED come on?

Doesn't either of the drive select LEDs come on?
Click to expand...
When i type LOAD"$",8 i can see before drive led on and after two seconds, led 's drive stay off and the central goes on!
 
Ah,

So, to be clear...

All LEDs are initially OFF.

When you enter the command LOAD "$",8 the drive 0 (right hand side) disk spins and the drive 0 LED (right hand side) comes ON.

After a short while the drive 0 LED goes OFF and the centre LED comes ON.

The centre LED coming ON is indicating a drive error.

Dave
 
daver2 said:
Ah,

So, to be clear...

All LEDs are initially OFF.

When you enter the command LOAD "$",8 the drive 0 (right hand side) disk spins and the drive 0 LED (right hand side) comes ON.

After a short while the drive 0 LED goes OFF and the centre LED comes ON.

The centre LED coming ON is indicating a drive error.

Dave
Click to expand...
Yes, correct!
 
OK,

Have you checked ALL of the socketed ICs for the correct orientation (as I have mentioned in post #626?

Can you also try the commands:

LOAD "$0",8

and:

LOAD "$1",8

You may have to manually stop the first LOAD command from working to enter the second. I am hoping that the right-had-drive (drive 0) will be activated for the former command and the left-hand-drive (drive 1) will be activated for the latter command.

Have your tried to format and initialise a disk yet?

Dave
 
>>> No Dave, i wrote this on post #632

Thanks, I missed that post...

The commands you require are:

OPEN 1,8,15
PRINT #1,"N0:DER,42"

This creates a new disk format on drive 0 (the right-hand drive).

OPEN 1,8,15
PRINT #1,"N1:DER,42"

This creates a new disk format on drive 1 (the left-hand drive).

DER is the name of the disk (can be anything up to 16 characters in length.

42 is a unique 2-character code - they can be anything though.

Dave
 
You must log in or register to reply here.
Back
Top