I've not done this for the Xpander, but I have for the Prophet VS. I combined the roms into one file using Python - relatively simple script to load a byte from each file and interleave them. I then used IDA Pro to turn into code (68k for the VS). It's quite an interesting task to do, though I didn't get around to fully decompiling/commenting.
The xpander should be interesting as it uses a 6809 chip (68b09) as used in Robotron. Should be relatively easy to understand the code, though it will be very verbose and reliant on the other chips around it (so have a schematic handy to figure out the memory map)
Good luck!
On Tue, Jun 12, 2018 at 9:41 PM, Tony Cappellini cappy2112@... [xpantastic] <xpantastic@yahoogroups.com> wrote:
Has anyone here attempted to disassemble the XPander or Matrix 12 ROMS?If so, where is the dissembled source code at?If not, what would you recommend using getting the ROM bin files that are separatedinto even & odd addresses, into 1 contiguous file? I don't want to goof that up and make the job more difficult.ThanksTony