Re: 8250 and C64 disks

From: Claus Just Rasmussen (
Date: 2006-04-05 17:05:09

Hi William,

I suppose that the device number you refer to is 8 (or whatever it's set 
to)? In that case it's ok, because I have contact to the 4040. It's just 
acting weird.

The reading-head moves from outside to the middle and then the same 
repeatedly. The BAM is located on track 17, isn't it? My guess is that 
it's calibrating, trying to read the BAM, then... repeat...


William Levak wrote:
> On Mon, 3 Apr 2006, Claus Just Rasmussen wrote:
>> (2) I also noticed that the 4040 might actually be sick... or maybe 
>> only modified - the 6532 is located on an extra socket (mounted in 
>> the original socket) + a few wires are added. So... don't know if it 
>> works...
> A common modification was to add a device select switch.  The device 
> number is pins 22, 23, and 24 on the 6532.  Try putting the 6532 back 
> in it's original socket.
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Claus Just Rasmussen, BSc.EE.

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