Marko Mäkelä wrote:
>
> Ethan Dicks wrote:
> > It means that you might have a defective 6530 chip, or a defective 6504 CPU
> > (the one that talks to the floppy drive, not the CPU that talks to the IEEE
> > bus).
>
> Isn't the 8250 equipped with two 6502 processors? At least my 8050 and
> 8250 are.
It is, this applies to the whole series of those drives, including the
SFD1001. The older dual drives (4040) used a 6504 as the drive controller
CPU.
I had that failure several times, in one case it turned out that the 6530
adaptor board was not seated correctly, but in two other cases it was a dead
6530. I guess a dead drive controller 6502 can also cause that error code,
but when I tried to remove that CPU, it just locked up the whole drive.
Nicolas
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