You could try this utility
  It will dump the ROM as an ASCII HEX file to a TPDD device.  There are online 
utilities that can convert it to a binary file that could be loaded into a REX. 
 I have used it to read mystery OPTROMs that sometimes come with the eBay 

However I believe some OPT ROMs have to be modified to work with the REX so the 
PSCG+ disk ‘might’ not work with the REX directly.

Alternatively the OPTROM may already have been converted into a REX file which 
is worthwhile checking.  There is a validated list of OPTROM images on  Others might exist just need to 
check the archives.

From: M100 
on behalf of Rick Shear <<>>
Reply-To: <<>>
Date: Friday, August 10, 2018 at 3:20 AM
To: <<>>
Subject: [M100] Backup ROM

I have a Model 100 with a PSCG Disk+ ROM in it.  I am in the process of 
gathering all the parts to build a REX board and would like to back up the 
Disk+ ROM to install on the REX.  I've been trying to find a utility to back 
the ROM up from the Model 100 to a TPDD device.  Is there such a program 
available?  Or will I have to get/build an eprom reader to get the image?

I found a program on club100 
 that would read the image and send it to an eprom burner, but I don't have one 
of those devices and really don't need to burn a copy to an eprom.

Thanks for any pointers in the right direction.


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