via this auction
Full details on the update here.
"Like many JX10 owners without a PG800 programmer I was disappointed to find that Roland had made a complete arse of the midi implementation - there is no way to edit sounds via midi.So I got hold of the service manual and the datasheet for the 6303 processor used in the assigner board, and set about dis-assembling the firmware, in the hope of finding the 'bug' that stopped SysEx sound edits working.
In the process I learned a lot about how the JX works, how the PG800 works, and how NOT to write firmware for a synthesizer. The Roland software engineers must have either been under real pressure to get the job finished, or they simply got the office cleaner to write it, because it is a poorly structured, badly written mess.
When I found the code for SysEx reception there was only a slight hint that they had planned to implement editing via midi, no 'broken' code for it, but with a little thought, I found a way to hack it in there myself..."
Hi and thanks for posting this very interesting hint. I have the PG800 and I am really satisfied with the sound, but I have one question regarding the serial numbers. I had two JX10 before and I did not like the sound very much. But the last one I have bought was absolutely differnet. It is punchy and the pads sound wonderful. Sometimes it comes close to the JP8 Sound, so I wonder, if this has got soemthing to do with the hard- and/or software. Could you help me? By the way, have a look at our virtual museum (www.tastronauten.de), where we show our complete synth gear. Thanks in advance, Volker
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