It's a bit cryptic, but here goes:
- MIX, DELAY_TIME, FEEDBACK, and VOLUME go from 0-255
- MODE goes from 1 to 8
- EXPRESSION, FILTER, MODULATION, and MODE_SPECIFIC are either LEFT, MIDDLE, or RIGHT
FACTORY PRESET 1 - Normal
presets[1][MIX] = 128;
presets[1][DELAY_TIME] = 128;
presets[1][FEEDBACK] = 128;
presets[1][MODE] = 1;
presets[1][VOLUME] = 200;
presets[1][EXPRESSION] = MIDDLE;
presets[1][FILTER] = MIDDLE ;
presets[1][MODULATION] = MIDDLE;
presets[1][MODE_SPECIFIC] = MIDDLE;
FACTORY PRESET 2 - Tap
presets[2][MIX] = 100;
presets[2][DELAY_TIME] = 128;
presets[2][FEEDBACK] = 150;
presets[2][MODE] = 2;
presets[2][VOLUME] = 200;
presets[2][EXPRESSION] = 2;
presets[2][FILTER] = LEFT ;
presets[2][MODULATION] = RIGHT;
presets[2][MODE_SPECIFIC] = LEFT;
FACTORY PRESET 3 - Auto Set
presets[3][MIX] = 128;
presets[3][DELAY_TIME] = 250;
presets[3][FEEDBACK] = 100;
presets[3][MODE] = 3;
presets[3][VOLUME] = 200;
presets[3][EXPRESSION] = MIDDLE;
presets[3][FILTER] = RIGHT ;
presets[3][MODULATION] = LEFT;
presets[3][MODE_SPECIFIC] = 2;
FACTORY PRESET 4 - Reverse
presets[4][MIX] = 128;
presets[4][DELAY_TIME] = 125;
presets[4][FEEDBACK] = 120;
presets[4][MODE] = 4;
presets[4][VOLUME] = 200;
presets[4][EXPRESSION] = MIDDLE;
presets[4][FILTER] = LEFT ;
presets[4][MODULATION] = MIDDLE;
presets[4][MODE_SPECIFIC] = RIGHT;
FACTORY PRESET 5 - Rhythm
presets[5][MIX] = 115;
presets[5][DELAY_TIME] = 250;
presets[5][FEEDBACK] = 53;
presets[5][MODE] = 5;
presets[5][VOLUME] = 200;
presets[5][EXPRESSION] = MIDDLE;
presets[5][FILTER] = MIDDLE ;
presets[5][MODULATION] = MIDDLE;
presets[5][MODE_SPECIFIC] = RIGHT;
FACTORY PRESET 6 - Tape
presets[6][MIX] = 100;
presets[6][DELAY_TIME] = 200;
presets[6][FEEDBACK] = 200;
presets[6][MODE] = 6;
presets[6][VOLUME] = 200;
presets[6][EXPRESSION] = MIDDLE;
presets[6][FILTER] = MIDDLE ;
presets[6][MODULATION] = MIDDLE;
presets[6][MODE_SPECIFIC] = MIDDLE;
FACTORY PRESET 7 - Misc
presets[7][MIX] = 100;
presets[7][DELAY_TIME] = 72;
presets[7][FEEDBACK] = 245;
presets[7][MODE] = 7;
presets[7][VOLUME] = 128;
presets[7][EXPRESSION] = 2;
presets[7][FILTER] = 1 ;
presets[7][MODULATION] = 1;
presets[7][MODE_SPECIFIC] = 0;
FACTORY PRESET 8 - Looper
presets[8][MIX] = 170;
presets[8][DELAY_TIME] = 82;
presets[8][FEEDBACK] = 83;
presets[8][MODE] = 8;
presets[8][VOLUME] = 255;
presets[8][EXPRESSION] = 2;
presets[8][FILTER] = 1 ;
presets[8][MODULATION] = 2;
presets[8][MODE_SPECIFIC] = 2;