Prophet 600 Rev B CPU Pcb photos

Some photos of the Prophet 600 Rev B CPU PCB with the Gligli CPU mod








 

Comments

Post a Comment

Popular posts from this blog

Prophet 600 Noise Source Modification

Image
So, I modified my  Prophet 600  to have a noise source, with a level parameter that is storable with a patch. I was inspired by a Japanese  Prophet 600  mod I saw online a while back. He documented what he did very well.  http://prophet-600.blogspot.com/2014/09/prophet-600-adding-noise-waveform.html The goals were as follows: 1) Modify the GliGli FW to add a noise source using what was the external filter CV input  2) rewire the external filter CV so I still have an external filter CV and it no longer goes thru U458 (CEM 3360) 3) build a hardware noise source run it through U458 which is under software control, accessible using "To tape" and pressing 0 twice ("To tape 0 twice" is/was a duplicate arpeggio speed control.) So here is where I'm at: 1) The code is done and works. I can save and recall the Noise parameter and the code controls U458 to make the noise level settable by the front panel. The code I modified so far seems stable. 2)  I cut a trace...
Read more

Gligli P600 Noise Mod V2.26 JRS Overview

Image
Gligli P600 Noise mod V2.26B JRS: https://github.com/matrix12x/p600fw/...717999ed60cf98 History ======= - all revisions based on Gligli V2.1 RC3 - V2.20 JS - added noise mod and new LFO waveforms step8, seq, RevSaw - V2.21 JS - added new LFO waveforms step4 - V2.22 JS - added 4bit Triangle and 6bit Sine - V2.23 JS - fixed patch compatibility bug introduced in V 2.22 - V2.24 JS - reverted polymod bug to RC1 behavior - V2.25 JS - added new vibrato waveforms and Vibrato targets - V2.26B JS - fixed post “Tune” volume bug introduced in V2.25 V2.25 includes - LFO has 6 new waveforms: Step8, RevSaw, Seq, Step4, Bit_Tri, Bit_Sine New Pitch Bender targets:PW(VCO A), and VCO B only New noise source setting control. Pressing "to tape" 0 a second time lets you adjust the VCF CV input level and store it with a patch. I modified my P600 to add a noise source and use this parameter to adjust the noise source per patch, hence in the UI this displays as "noise". However, in an u...
Read more

Gligli P600 Noise Mod Version 2.20 JRS

  I updated Gligli 2.1 RC3 to Version 2.20 Noise Mod by adding the following features: 1) Three (3) new LFO waveforms added: reverse saw (revsaw) from Overcycler   gligli/overcycler: Hybrid polyphonic wavetable ... - GitHubgithub.com › gligli › overcycler   as well as adding Step8 and Seq from JHHL's code  http://jhhl.net/Software/p600.html  The new LFO waveforms are paired as follows:  Step8-RevSaw Seq-none Thus, you would select "step8-RevSaw" and the LFO waveform switch would be in the "up" position (like for triangle, saw, and sine) to select RevSaw. Note, if the LFO switch is in the "up" position and "Seq-none" is selected, currently the LFO would be disabled, e.g., there would be no output. I am going to replace "none" with a new waveform when I get a chance. I may add Step4 just to plug in the hole. 2) New Pitchbender target VCO B only (note the second new pitch bender target "PW" does not work yet)  3) New noise so...
Read more