Here are all the changes I made:
- Overall speedup: refresh rate at full load is now twice faster.
- Various fixes, especially in the assigner.
- MIDI in pitch bend & modulation wheel messages support.
- MIDI out is now sending note on/off, pitch bend and modulation wheel messages.
- Footswitch support, can be used to latch new chords in unison mode, and to hold the current arpeggio while arpeggiating.
- External clock support for the arpeggiator, clock source can be changed using "From tape" + 8 (either MIDI clock, or pulse clock sent into "Cassette in". You can then choose the actual arp clock ratio using the "Arpeggiator speed" parameter, from 1/3 to 1/384).
- In manual mode, or by pressing "To tape" in preset mode, you get access to 20 extended parameters (2 per keypad number), the "Speed" potentiometer edits the last chosen one.
| Keypad # | Parameter name | Choices |
| First press | ||
| 0 | Arpeggiator speed | - |
| 1 | LFO shape | pulse-triangle,random-sine,noise-saw |
| 2 | Vibrato speed | - |
| 3 | Vibrato amount | - |
| 4 | Modulation delay | - |
| 5 | Amplifier envelope shape | fast-exp,fast-lin,slow-exp,slow-lin |
| 6 | Bender target | off,vco,vcf,vca |
| 7 | Glide | - |
| 8 | Unison detune | - |
| 9 | Amplifier velocity amount | - |
| Second press | ||
| 0 | Arpeggiator speed | - |
| 1 | LFO osc a/b target | ab,a,b |
| 2 | LFO speed range | low,high |
| 3 | Modulation wheel range | min,low,high,full |
| 4 | Modulation wheel target | lfo,vibrato |
| 5 | Filter envelope shape | fast-exp,fast-lin,slow-exp,slow-lin |
| 6 | Bender range | 3rd,5th,Octave |
| 7 | Assigner priority mode | last,low,high |
| 8 | Osc pitch mode | free,semitone,octave |
| 9 | Filter velocity amount | - |
- Anytime, by maintaining "From tape" and pressing a keypad number, you get access to misc functions.
| Keypad # | Function name | Choices |
| 1 | MIDI receive channel | omni,1-16 |
| 2 | MIDI send channel | 1-16 |
| 3 | Calibrate bender | - |
| 4 | Select voice | 1-6 |
| 5 | Kill selected voice | on,off |
| 6 | Dump presets | - |
| 7 | Set basic saw patch | - |
| 8 | Set clock source | internal,MIDI,tape |
Download links at: http://sfx.gligli.free.fr/zik/p600/dev/2013-10-26_2/
A new stable release should be out soon, so please report any problem you could find. Using github issues (http://github.com/gligli/p600fw/issues) for this would be cool.
EDIT: Built a new version that seems to fix "ghost" tones people had in post-beta1 versions.
Hello, my name is Francesco and I got into your blog while I was looking for some information about midi implementation of the Prophet 600 that I own.
ReplyDeleteI saw you made a great job designing a new firmware for this synth. I'm not an electronics expert at all and I'm wondering if is there a procedure to load the firmware straight inside the resident cpu?
Thank you!
Francesco
Hi, I also feel, it wakes up my interest for my old P600 very much .. as if it will come closer to the P5 .. or even better. But one question I still have is: Will the chord-memory function still work?
ReplyDeleteI will be happy about an answer and will renovate my old one, if that fact will be secured ..
Carsten Ehlert from www.naturesound-ol.de
Yes, there is chord memory, it works the same as with the Z80
Deletei am very impressed with your post because this post is very beneficial for me and provide a new knowledge to me
ReplyDeleteUnison Midi Chord Pack Crack