[sdiy] Two different types of Juno 106 voice boards ?!

[Doug Terrebonne]

Yes the early ones had an external EPROM the later ones went with a mask ROM as documented in the service notes. They are compatible.

Doug


--- On Mon, 1/5/09, Gil W. <gil_we at yahoo.com> wrote:

> From: Gil W. <gil_we at yahoo.com>
> Subject: [sdiy] Two different types of Juno 106 voice boards ?!
> To: "synth-diy at dropmix.xs4all.nl" <synth-diy at dropmix.xs4all.nl>
> Date: Monday, January 5, 2009, 2:18 PM
> Looking at two 106 voice boards (one which is in my 106 and
> another space one) I can notice that the spare one
> doesn't have IC37 and IC39 soldered into it (from the
> factory). This is the 106 ROM marked "B" and a
> TC40H373... Any reason for this ? Can I used the spare one
> instead of the one which features the extra ROM ?
> 
> Thanks !
> 
> 
>       
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