README OBERHEIM OBXa EPROM FILES


XAC0.bin = IC 104. Checksum = 67B0
XACA1.bin = IC 103. Checksum = FF40
XAC2.bin = IC 102. Checksum = B70A

Format is BINARY. If you need a different file format e.g. hex, then you can find convertors on the web.

All Eproms should be 2716 type (standard 2716, not TI TMS2716!).

The files were verified by programming a new EPROM set and installing in my OBXa with no problems.
I do not have any other code versions so please don't ask.

If you are going to work on vintage synths then use a vintage EPROM programmer! Files created using a Data I/O 29B with Unipak2B & Promlink s/w.

EPROM Revision history can be found in the OBXa Service Manual. 
Remember that there have been 2 different versions of CPU boards. 
I have not verified that these work fully in all applications.
These files are provided in good faith to support the vintage synth community. 
No Warranty. No liability is assumed for any application or damage incurred while using the code. 



www.lazyblueoctopus.com

