Category Archives: Pro One CPU

TurboCPU MIDI Board – Alternate Source

Posted on September 10, 2018 by grantb4

If you are in the UK or EU (ouch), here is a source for a DIY MIDI IN/OUT/THRU bare PCB that can be used with the TurboCPU. No DAC option, but otherwise it’s pretty similar to the MTG MIDI board. … Continue reading →

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Vintage Synth CPU Updates, Upgrades and Expansions

Posted on May 22, 2015 by grantb4

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 →

Posted in Pro One CPU, Uncategorized, Yamaha DX7 | 4 Comments

TurboCPU v1.40 (beta) is available

Posted on April 25, 2015 by grantb4

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?

Posted on June 25, 2014 by grantb4

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 →

Posted in Pro One CPU | 3 Comments

Pro One TurboCPU v1.32 – Again with the updates

Posted on April 14, 2014 by grantb4

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

Posted on March 1, 2014 by grantb4

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 →

Posted in Pro One CPU | 2 Comments

TurboCPU – Updates and Software

Posted on December 30, 2013 by grantb4

It’s been about two years since I touched the TurboCPU code.  I should have v1.20 ready soon. Here is what I have fixed so far: The envelope was not retriggering when you lifted one of two keys held down when … Continue reading →

Posted in Pro One CPU | 2 Comments

NEW Keyboard for SCI Pro One!

Posted on March 18, 2012 by grantb4

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 →

Posted in Pro One CPU | Tagged , | 104 Comments

MIDI Jack mounting

Posted on October 21, 2011 by grantb4

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 →

Posted in Pro One CPU | Tagged , | 2 Comments

MIDI Control Surface for Pro One

Posted on July 27, 2010 by grantb4

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 →

Posted in Pro One CPU | 2 Comments