Final option, check out the SysEx commands in your manual and see if there's a SysEx command to save the data you wish. You may need to use the computer to send the message to DUMP the data (from the keyboard to the computer, and save the data like a midi file) then you could use a midi file (or SysEx again) to put the data back again as required
F0 43 10 4C 00 00 7E 00 F7
F0 43 10 4C 02 01 5A 01 F7
F0 43 10 4C 02 01 40 06 00 F7
CC94 value 127
Are there other SysEx options?
It would be a help if you could save ALL the data received as a file, and attach that file to your next message
F0 43 10 4C 30 2E 05 19 F7 F0 43 10 4C 00 00 7E 00 F7
F0 43 10 4C 00 01 11 F7 F0 43 10 4C 20 42 08 F7 F0 43
10 4C 40 03 11 F7 F0 4B 10 4C 42 00 14 F7 F0 43 10 4C
5A 01 F7 F0 43 10 4C 07 03 F7 F0 43 10 4C 07 02 F7 F0
43 7E 00 F7 F0 43 7E 01 1B 1B F7 F0 43 10 4C 30 23 05
0A F7 F0 43 10 4C 30 2A 05 19 F7 F0 43 10 4C 30 2C 05
19 F7 F0 43 10 4C 30 2E 05 19 F7
How many different Registration memories are there?
Maybe there is a separate SysEx string for each
Did the software actually send something.
If it was stored SysEx it might need a special mode to send data like that, as opposed to send data in a midi file.
Is there any indication that the PSR has received data.
Maybe the keyboard needs to be in a special mode to receive SysEx?
I've been looking at the manual for this keyboard.
I cannot be sure that the 'Initial Setup' data is the same as the 'Registration memory'.
Transmits all current panel settings to a second PSR-740/640 or a MIDI data storagedevice.
If you want to have the song play back with the panel settings used for recording,
execute the Initial Data Send function before recording the performance on the PSR-740/640 to an external sequencer.
Also, I don't see any reference to accessing the 'Registration memory' via SysEx,
but I'll keep looking at this.Thank you very much, Geoff.
The floppy drive on the 640 looks like a standard PC type drive, HD or DD, so you should be able to find a replacent drive easily.Yesterday I'm looking around some online shops in my country to check the price of the FDD. It surprise me the price is double than about 20 years ago . And the floppy disk price is even crazier, triple .
I've bought 'used' ones salvaged from an old PC for about £5.In my country, that's the price for the new one about 15 years ago.
the drives are usually fairly robust, any problems are more likely to be a bit of dust in one of the sensors.
Or damaged disks.
When you try to use a disk, what messages do you get?
Have you tried to format a blank disk, what message do you get.I think I will follow your suggestion.
May be worth trying to get the disk drive working again?
Wow... you're so kind. It's a very nice of you and thank you so much. But....
I have a few floppy disks, if needed I could send you a couple.
But you should find someone to give you one?Yes, I think I will buy one or ask my ex-boss in case she still has some blank floppy disk.
I've looked at the data. I note that there are 15 separate Sysex messages, not all of the same length.I feel so grateful that you want to spend times to examine the data.
There is NOT enough data here for Registration memory, maybe enough for the Initial Setup?
data is damaged.
The first item and the last item (# 15) are the same. Odd
Item 6 has the 2nd byte as 4B, all the other items have this byte as 43 which is the Mfg ID for Yamaha. The 4B may be damaged data.
The items with the shorter data sets may have bytes missing?
The 3rd and 4th bytes are mostly 10 and 4C, which could be the Unit ID and the Device code, and the values may be correct for Yamaha devices, but why the data missing for some items (these could be a special SysEx code peculiar to this keyboard??).
I would certainly treat the data as suspect, even damaged.