Programmable Synth Controller Live Play Protocol

Immediate (Live) interface

STX R DD [DD...] ETX

R is the start register:

• 0x11 = DACA
• 0x12 = DACB
• 0x13 = DACC
• 0x14 = DACD
• 0x15 = PSGA
• 0x16 = PSGB
• 0x17 = PSGC
• 0x18 = PSGN

DD is the 16 bit register data. Data will continue to be read into each subsequent register until either:

• 'aligned' ETX received
• R = 19; i.e. there's no more registers to write to. All data until the next aligned ETX will be ignored.

Example 1: Set single register

02 12 EB 14 03

Set DACB; message enabled, gate enabled, trig enabled, value 2836

Example 2: Set multiple adjacent registers

02 15 C0 2B C0 2F C0 32 03

Set all PSG tone generators; message enabled, velocity 64, chord of MIDI notes G2, B2, D3

Example 3: Set multiple adjacent registers, superfluous data

02 17 C0 32 C0 32 xx xx 03

Set PSG tone generators B and C to MIDI notes D3. xx bytes will be ignored.