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<P>a) Any synth with EPROMs older than 20yrs is living on "borrowed time". You are really screwed if you have an OTP (one time programmable) CPU, like a TB-303. If you have external EPROMs, I suggest copying them, and reprogramming. Simple, and you are good for probably 10 more years, or another 20 or so if you use new EPROMs. The trouble is, a LOT of old synths use 2716s or 2732s that are hard to get modern programming support. So you have to go to eBay and get a Data IO 29B or a UniSite40 that can do all the old stuff.</P>
<P>b) the MOTM-650 is *my* hardware design, and Synthcom's firmware design.</P>
<P>Paul S.</P>
<P>fondly recalls paying $14,000 for a UniSite 40</P>
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<B>On Tue Mar 27 22:59 , Amos <CONTROLVOLTAGE@GMAIL.COM>sent:<BR>
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<BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #f5f5f5 2px solid; MARGIN-RIGHT: 0px">Mr. Schrieber is apparently in touch with the folks at Synthcom<BR>
Systems, makers of the incredibly wonderful Europa upgrade for the<BR>
Jupiter-6... I wonder if Synthcom has any plans in the works for a<BR>
Jupiter-8 upgrade?<BR>
<BR>
I don't know nearly as much about the architecture of the "8" to know<BR>
if there are significant obstacles to such an upgrade... but since the<BR>
JP8 uses scanned panel controls and patch memory, methinks a new CPU<BR>
could be made to work. Not a task for lightweights, but Synthcom are<BR>
no lightweights... :-)<BR>
<BR>
Speaking of; anyone on-list used Synthcom's MOTM-650 4-channel MIDI-CV?<BR>
<BR>
On 3/28/07, Paul Perry <<A href="javascript:top.opencompose('pfperry@melbpc.org.au','','','')">pfperry@melbpc.org.au</A>> wrote:<BR>
<FONT color=red>> On the bright side, it gives aa whole wonderful</FONT><BR>
<FONT color=red>> retro-synth career path for anyone who wants to</FONT><BR>
<FONT color=red>> draw a line around the offending CPU and replace it</FONT><BR>
<FONT color=red>> with a new micro, new improved operating system</FONT><BR>
<FONT color=red>> etc etc.</FONT><BR>
<FONT color=red>></FONT><BR>
<FONT color=red>> paul perry Melb AUstralia (won't be me though)</FONT><BR>
<FONT color=red>> ----- Original Message -----</FONT><BR>
<FONT color=red>> From: "keith sterling"</FONT><BR>
<FONT color=red>> > day, during which he mentioned that my beloved Jupiter 8 was destined</FONT><BR>
<FONT color=red>> > for the landfill soon because it contains CPU embedded EPROMS, and</FONT><BR>
<FONT color=red>> > all EPROMS have an implied 20 year (or thereabouts) lifespan. Since</FONT><BR>
<FONT color=red>> > the Jupiter's ROM is inside the CPU chip it can't easily be read and</FONT><BR>
<FONT color=red>> > reprogrammed in a new chip, like one could do with a discrete 2716</FONT><BR>
<FONT color=red>> > type EPROM. This news was shocking to me, since I dearly love the</FONT><BR>
<FONT color=red>> > Jupiter and a few other machines that I own from that era.</FONT><BR>
<FONT color=red>></FONT><BR>
<FONT color=red>></FONT><BR>
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