A couple of PET drive problems...

From: Bryan Pope (bpope_at_wordstock.com)
Date: 2007-03-19 16:14:25

1. I have a 4040 that when powered up the LEDs blink nine times.  I 
can't find a flash code table for the 4040 at zimmers.net, but for 
the 8050 it says it is the Common RAM, $4000 - $43FF.  Could this be 
the same for the 4040?

2. With a 2031, it powers up correctly but whenever you try to do any 
disk access like get a directory or header a disk, the computer hangs 
until I power off the 2031.  I have already swapped the ROMs and the 
6522, but the problem still persists.  I haven't swapped the 
75160 and/or 75161 yet.  Could one of these be the problem and if 
so which one should I swap first?  I am trying to minimize any 

Thanks for any help,


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