Category Archives: Pro One CPU

Vintage Synth CPU Updates, Upgrades and Expansions

There are so many CPU upgrades now for our beloved synths of old, that I thought it would be nice to have a catalog of them all in one place. If someone else has done this already, please let me … Continue reading

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TurboCPU v1.40 (beta) is available

A new version of the TurboCPU+MIDI firmware has been uploaded to the website, along with a new version of the Windows application TurboCPU.exe. Added: “MIDI Note Priority” which supports 4 modes: Lowest Note, Highest Note, Last Note and my original … Continue reading

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TurboCPU DAC/CV Option – New Parts Source?

I made an interesting discovery on the web today. There are a lot of companies making “Breakout Boards” and “SMT to DIP Adapters” but I’ve never found an assembled one for the MCP4728 DAC used in the TurboCPU’s CV/DAC option … Continue reading

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Pro One TurboCPU v1.32 – Again with the updates

Further refinements to both the firmware and PC software. The main changes are in the firmware and they are: When the Sequencer is driven by the MIDI clock with Seq Tie Disabled, the gate time is now 50%. Previously it … Continue reading

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MTG TurboCPU+MIDI+CV v1.30 Beta Firmware and PC Software Available

I’m just finishing up the v1.30 firmware and a basic PC editor for the TurboCPU. This version will not be the shipping version for a while yet, but you can get your hands on in now if you are interested.  … Continue reading

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TurboCPU – Updates and Software

It’s been about two years since I touched the TurboCPU code. Sales have been excellent and the project has been very well received. I did get two bug reports and I am acting on those at the moment. I should … Continue reading

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NEW Keyboard for SCI Pro One!

A long time ago I ordered a new 37-key Doepfer keybed and cable from in the USA. In fact I think Doepfer gets them from in Europe so there might be a better way to obtain one. The new keybed … Continue reading

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MIDI Jack mounting

I have received some photos from users showing off their TurboCPU+MIDI installations, but don’t have them at hand right now. What I do have is an interesting photo from the old Oberheim DX or DMX that shows yet another way … Continue reading

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MIDI Control Surface for Pro One

I just ordered a Behringer BCF2000 MIDI Control Surface and will be looking at creating a template that maps all the changeable parameters to the knobs buttons and sliders. Hopefully there are enough controls on this unit. I wanted the … Continue reading

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MIDI to CV, Pitchbend and More

Today I did some further experiments on the next little improvement to the MTG Turbo CPU for the Sequential Circuits Pro One: MIDI-to-CV. I’ve acquired a quad DAC (D/A or digital-to-analog converter) board that can be very easily hooked up … Continue reading

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