MTG Pro One CPU  
===============


Last Minute Notes/Tips
----------------------
Operational:
 * The REC switch remembers latched Arp data even if you turn the Arp off. You can
   go back to the Arp with these keys saved. However, you need to turn REC off 
   before you can play the keyboard again in normal mode or switch the sequencer
   on. This is by design. 
 * If your sequence or arpeggio does not start, it's probably because you have 
   the MIDI Clock enabled. Press PLAY on your attached drum machine or sequencer
   (or set the clock source back to LFO).

PC Software:
 - If the supplied PC software fails during firmware upgrade, I have a new version 
   TurboCPU.exe v1.42 with delays built in that should address the issue. Contact me.
 - Using MIDIOX, if the Pro One does not reboot at the end of a Sys Ex firmware 
   load, make sure your MIDIOX settings match the values in the newest PDF manual.
 - For both of the above: 
   After you update your firmware you should perform a "three-finger-reset" to
   restore the default settings (see the user manual). This will clear out the 
   sequences and set the user parameters to a known state.

Technical:
 - Tech Note: The TTL MIDI signals on the module PCB are 3v signals (5v tolerant).


Release Notes
-------------
Version 1.41 (just PC software, no firmware changes at this time)
 - Now comes as an installation package (setup.exe). As such, it uses the User's
   Docs area for data files. If you prefer standalone, use the previous version.
 - The MIDI menu naming has been cleaned up. The options are now Select/Open and
   Close. Previously it was just one item Select/Open/Close. 

Version 1.40 
 - Added "MIDI Note Priority" which supports 4 modes: Lowest Note, Highest Note,
   Last Note and my original mode (called One Note). There is a 10 note stack 
   for Lowest, Highest and Last (the default is Last). The Last, High and Low 
   Note priorities read the RETRIG switch live to determine whether a new 
   envelope is triggered on subsequent MIDI keys down or not.

Version 1.32 
 - When the Sequencer is driven by the MIDI clock with Seq Tie Disabled, the gate 
   time is now 50%. Previously it was far too short. This is a bugfix.
 - There are no longer any communications with the DAC unless there is a voltage 
   that needs updating. This reduces digital traffic on the I2C lines and reduces
   the CPU burden as well.
 - Added waveform #11 called “Drum” to LFO2. When used in conjunction with KeySync 
   ON, provides a single downward ramp per note played. Perfect for resonant 
   feedback style drum synth sounds.
 - Added a SysEx command to reset the synth to Factory Defaults.

Version 1.30
 - Support for utilizing MIDI Note-On velocity. Its destination can be assigned.
 - Changed some of the DAC assigmnents and SysEx commands.
 - Added a SysEx "go_bootloader" command to launch the bootloader.

Version 1.20 
 - Changed the RETRIG mode key scanning to retrigger the envelope if 2nd of two keys
   released. This mimics the original more closely.
 - Fixed a bug that caused SEQ2 downloading to corrupt SEQ1.

Version 1.11 
 - Changed the DAC assignments for CV3 and CV4 to match the manual.

Version 1.10
 - MIDI range is C2 (36) to C5 (84) but you can bend beyond these limits.
 - Added an I2C "CV" DAC and support for pitch bend (including setting the range via RPN),
   filter cutoff & resonance, LFO2, etc.  Allow user to set CC#'s.

Version 1.00
 - This offers the basic functionality I envisioned when starting this project. I will
   continue to add features and fix bugs.
 - Added loadind/saving sequences over MIDI.
 - Added sequence stop mode so that the seq stops on user switch anytime or only 
   end-of-seq. You can't switch to a blank sequence in the new mode (safety feature).