HP Draftmaster II 7596A: EPROM dumps needed, urgent :-(

David Collins davidk.collins at bigpond.com
Tue May 24 15:04:27 CDT 2016

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

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