Protoype 1540 PCB  - Courtesy Mike Naberezny
Prototype 1540 - Courtesy Mike Naberezny
  • Mon, 2011-10-24 14:39

From an email from Mike Naberezny:

I have what appears to be a 1540 drive prototype.

Here are some photos of the board:
http://mikenaberezny.com/hardware/1540-prototype

Externally, it is a 2031S (a single full-height 5.25" drive for PET/CBM in a 
metal case).  Unlike a normal 2031S, this drive has a completely different 
circuit board and has an IEC port instead of IEEE-488.

The top of the board has the markings:

   ASSY 15400000
   SERIAL FLOPPY CONTROLLER
   (C)1980 COMMODORE INTL

and on the bottom:

   FAB 1540001
   ARTWORK 1540000
   REV 1

The board is unlike any production drive I've seen.  It has no solder mask and 
looks like it was soldered by hand.  It has a few trace cuts and fixes.  It's 
clear that the board was made specifically for the 2031S chassis and the 
full-height drive.

I have not powered it up.  A previous owner has installed a 6502 where a 6522 
should be.  It also has the ROMs for a 2031 installed, which can't work with 
the IEC interface.  I plan to compare the board against the 1541.  If it's 
close, I'd like to try and bring it up with the 1541 ROMs.

Regards,
Mike

 

DSC00744.JPG

DSC00745.JPG

DSC00748.JPG

DSC00752.JPG


Related Posts

About author

bilherd's picture