Sequential Circuits Prophet VS `Shalebridge` V 1.45 OS IC Upgrade kit by Bassmobile

OS v1.45 `Shalebridge`† Upgrade Kit   
Sequential Circuits Prophet VS  
Digital Vector Synthesizer

Compatible with keyboard and rack mount versions of the VS. Simply plug these IC into the OS IC sockets on your VS machine to instantly add new features and fix historic bugs that existed in the original OS.  

Quick summary of new features and bug fixes:

 • NV PROGRAM NUMBER: Program Number is now remembered after power off

 • DATA INC/DEC: Data increment/decrement function has been added for fine adjustment

 • LFO SYNC: By default the VS has free running LFOs. If you change the 8th digit of the patch name to an 'S' (e.g. "Zenny 1S") then both LFOs are synced to the keys. If the 8th digit is an 'X' ("Zenny 1X") only LFO 1 is synced. LFO 2 will free-run!

 • ARP SYNC: Arpeggios are synced with the playing of the first note. Clock is reset when the first note is played.

 • LFO Sync & ARP Sync menu options: Adds "LFO Select" and "ARP Option" menu items, both are global features and saved in memory.

 • MASTER TUNE: Under the master tune screen a field has been added which provides a +\- 12 semitone transposition!!

 • LOCAL ON/OFF: Under the MIDI options switch a screen has been added to provide local keyboard enable and disable.

 • NRPN MSB/LSB IN & OUT: The original software had the byte order flipped LSB->MSB so many controllers (BCR2000, BeatStep Pro, etc) would not function correctly. HUGE IMPROVEMENT!

 • MIDI BUG FIX: In the original code, both ARP Rate and Split Point were disabled in the MIDI routine. The ARP Rate MIDI bug is fixed so now its NRPN controllable. If the ARP is off and you send the Rate NRPN then the ARP will turn on.

†OS Designed by Austin Synth-works