MS-60B+ patch 'R Pos' encoded in patch

[mungewell]

The MS-60B+ has a function to set where in the chain the R output is driven from, letting you configure for BOTH a pre/post amp sim output.... nice.

This information is stored within the patch, it looks like offset 0x361, but patches are automatically scaled with the number of effects in patch so that's likely to change.

[mungewell]

Looks to be in the PPRM block (v2 for the MS+)

$ python3 decode_preset.py -d test_R_first.ztpc
...
    PPRM = Container: 
        length = 32
        dump = hexundump("""
        0000   00 00 00 00 00 00 00 00 00 80 0C 02 00 02 00 00   ................
                                                      ^^
        0010   00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 07   ................
        """)

$ python3 decode_preset.py -d test_R_last.ztpc
...
    PPRM = Container: 
        length = 32
        dump = hexundump("""
        0000   00 00 00 00 00 00 00 00 00 80 0C 02 00 00 00 00   ................
        0010   00 00 00 00 00 00 00 00 00 00 00 00 00 00 80 07   ................
        """)

[mungewell]

• 0x00 After last effect
• 0x02 Before first effect
• 0x04 After 1
• 0x06 After 2
• 0x08 After 3
• 0x0A After 4
• 0x0C After 5

[mungewell]

Note: MS-60B+ also has the ability to select where in the chain that the R output is taken, not 100% sure but I don't think that it forces L/R output to mono - so you get an 'invalid' stereo image...