I realised the attachments wouldn't show in the general email but I figured the only
people who needed the binaries right now were the original posters who got them directly
from the email.
I'll put up the binaries of my EPROMs and the ones of yours when you post them as
downloads in the museum website over the next few days so they are there for the future
for anyone else who might need them.
Martin/Joachim, let us know if any of the files you now have or will get fixes your issue
and if a Draftmaster II  is saved as a result!!
David Collins
  On 25 May 2016, at 2:17 AM, Ethan Dicks
<ethan.dicks at gmail.com> wrote:
 On Tue, May 24, 2016 at 10:25 AM, David Collins
 <davidk.collins at bigpond.com> wrote:
  Here are the binaries for all the EPROMs on
processor PCA for my 7596A.  The
 PCA part number is 07595-60100 and is different from the one in the manual
 which is a 07595-60200 so I assume my PCA is older than the one in the
 manual. 
 I did not have an 8mm socket wrench with me when I visited my 7596A so
 I wasn't able to entirely remove the cover.  I did slip the camera in
 under the lower edge and did extract U28 and U37 from mine for
 dumping...
  The EPROMs on the PCA are as follows:
 17225-18001     U26
 17225-18002     U35
 17225-18003     U41
 17225-18004     U42 
 These were empty on my plotter, best I could tell.
  07595-18097     U28
 07595-18098     U37 
 I found these in those sockets:
 07595-18095  U28
 07595-18096  U37
  Unknown U27 - no part number label
 Unknown U36 - no part number label 
 These sockets are definitely empty on my plotter.
  Binaries for each chip are attached. All are
27512 EPROMs. 
 This list doesn't support attachments, so most of us didn't get them.
 I'm happy to send along my copies of 07595-18095 / 07595-18096 when I
 get them read out.
 -ethan